System LED Drivers for Mobile phones 6LEDs Illumination BD2802GU No.11041EAT12 Description The BD2802GU is a RGB LED driver specifically engineered for decoration purposes.This RGB driver incorporates lighting patterns and illuminates without imposing any load on CPU.This RGB driver is best-suited for illumination using RGB LEDs and decoration using monochrome LEDs.In addition, this RGB driver has been successfully miniaturized through the use of a VCSP85H2 (2.8 mm 0.5 mm pitch) chip size package. Features 1) RGB LED driver (dual drivers) - A slope control function is incorporated (allowing dual drivers to be controlled independently). - Slope control can be implemented using the DC current. - Two modes "continuous illumination mode" and "illumination single cycle mode" are supported. - Independent external ON/OFF synchronizing terminals (of dual drivers) are provided. 2 - Multiple drivers can be used concurrently by using the I C address change function and supporting reference clock I/O. 2) Thermal shutdown 3) I2C BUS fast mode support (maximum rate: 400 kHz) - A device address can be changed via an external pin. * * * This driver has not been designed for anti-radiation. This document may be altered without prior notice. This document does not provide for delivery. Absolute Maximum Ratings(Ta=25) Parameter Maximum Applied voltage Power Dissipation Operating Temperature Range Storage Temperature Range Symbol Limits Unit VMAX 7 V Pd 1250 (Note1) mW Topr -40 +85 Tstg -55 +150 o o (Note1)Power dissipation deleting is 10.0mW/ C, when it's used in over 25 C. (It's deleting is on the board that is ROHM's standard) Recommended Operating Conditions(VBATVIO, Ta=-4085) Parameter VBAT input voltage VIO pin voltage www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Symbol Limits Unit VBAT 2.7 5.5 V VIO 1.65 3.3 V 1/27 2011.04 - Rev.A BD2802GU Technical Note Electrical Characteristics(Unless otherwise specified, Ta=25, VBAT=3.6V, VIO=1.8V) Limits Parameter Symbol Unit Min. Typ. Max. Condition Circuit Current VBAT Circuit current 1 IBAT1 - 0.1 3.0 A RESETB=0V, VIO =0V VBAT Circuit current 2 IBAT2 - 0.5 3.0 A RESETB=0V, VIO=1.8V VBAT Circuit current 3 IBAT3 - 0.8 1.2 mA LED 6Ch ON, ILED=10mA setting Exclusive of LED current, RGBISET =120k step RGB1 group, RGB2 group LED Driver LED current Step ILEDSTP 128 LED Maximum setup curren IMAX - - 30.48 mA LED current accurate ILED 18 20 22 mA LED current Matching ILEDMT - 5 10 % LED OFF Leak current ILKL - - 1.0 A fosc 0.8 1.0 1.2 MHz RGB1 group, RGB2 group RGBISET=100k RGB1 group, RGB2 group, Terminal voltage =1V ILED=20mA setting, RGBISET =120k RGB1 group, between RGB2 group, Terminal voltage =1V ILED=20mA setting OSC OSC oscillation frequency SDA, SCL(I2C interface ) L level input voltage VILI -0.3 - 0.25xVIO V H level input voltage VIHI 0.75xVIO - VBAT+0.3 V Hysteresis of Schmitt trigger input VhysI 0.05xVIO - - V L level output voltage VOLI 0 - 0.3 V SDA pin, IOL=3 mA linI -10 - 10 A Input voltage = 0.1xVIO0.9xVIO L level input voltage VILR -0.3 - 0.25xVIO V H level input voltage VIHR 0.75xVIO - VBAT+0.3 V Input current IinR -10 - 10 A -0.3 Input current RESETB(CMOS input pin) Input voltage = 0.1xVIO0.9xVIO ADDSEL(CMOS input pin) L level input voltage VILADD - 0.25xVBAT V H level input voltage VIHADD 0.7 xVBAT - VBAT+0.3 V Input current IinADD - 10 A -10 Input voltage = 0.1xVBAT0.9xVBAT RGB1CNT, RGB2CNT(CMOS input pin with Pull-down resistance) L level input voltage VILCNT -0.3 H level input voltage VIHCNT IinCNT Input current - 0.25xVIO V 0.75xVIO - VBAT+0.3 V - 3.6 10 A Input voltage = 1.8V CLKIO(Output)(CMOS output pin) L level output voltage VOLCLK - - 0.2 V IOL=1mA H level output voltage VOHCLK VIO-0.2 - - V IOH=1mA fclk 200 250 300 kHz - 0.25xVIO V Output frequency CLKIO (Input)(CMOS input pin) L level input voltage VILCLK -0.3 H level input voltage VIHCLK 0.75xVIO - VIO+0.3 V Input current IinCLK - 3.6 10 A www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 2/27 Input voltage = 1.8V 2011.04 - Rev.A BD2802GU Technical Note Block Diagram / Application Circuit example VBAT VBAT2 VREF VBAT1 VBAT 1F/10V R1LED VIO 1F/10V RESETB Slope Control G1LED (RGB1) B1LED RGB1 R2LED SCL SDA 2 Level I C interface Shift Digital Control I/O Slope Control G2LED (RGB2) B2LED RGB2 RGB1CNT RGBGND RGB2CNT CLKIO ADDSEL CLKIO T4 GND2 TSD T3 T2 T1 IREF GND1 RGBISET Fig.3 Block Diagram / Application Circuit example Pin Arrangement Bottom View E T4 D B2LED C VBAT2 B GND1 A T1 1 G2LED RGBGND R2LED B1LED G1LED T3 R1LED VBAT1 RGBISE RGB1CNT ADDSEL GND2 index www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. CLKIO SCL SDA RGB2CNT VIO RESETB T2 2 3 4 5 3/27 2011.04 - Rev.A BD2802GU Technical Note Outside size figure VCSP85H2 CSP small Package Size : 2.8mmx2.8mm (Tolerance : 0.1mm each side) height 1.0mm max Ball pitch : 0.5 mm www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 4/27 2011.04 - Rev.A BD2802GU Technical Note Pin Functions Input Level For Power For GND No Pin No. Pin Name I/O ESD Diode Functions 1 D5 VBAT1 - - GND Battery is connected A 2 C1 VBAT2 - - GND Battery is connected A 3 A1 T1 - VBAT GND Test Pin (short to GND) S 4 A5 T2 - VBAT GND Test Pin (short to GND) S 5 E5 T3 - VBAT GND Test Pin (short to GND) S 6 E1 T4 - VBAT - Test Pin (short to GND) B 7 A3 VIO - VBAT GND I/O voltage source is connected C 8 A4 RESETB I VBAT GND Reset input (L: RESET, H: RESET cancel) H 9 B5 SDA I/O VBAT GND I2C data input I 10 B4 SCL I VBAT GND I2C clock input H 11 B1 GND1 - VBAT - Ground B 12 C5 GND2 - VBAT - Ground B 13 E3 RGBGND - VBAT - Ground B 14 C2 RGBISET I VBAT GND RGB LED reference current O 15 D4 R1LED I - GND Red LED1 connected E 16 E4 G1LED I - GND Green LED1 connected E 17 D3 B1LED I - GND Blue LED1 connected E 18 D2 R2LED I - GND Red LED2 connected E 19 E2 G2LED I - GND Green LED2 connected E 20 D1 B2LED I - GND Blue LED2 connected E 21 C3 RGB1CNT I VBAT GND RGB1 LED external ON/OFF Synchronism (LOFF, HON)* J 22 A2 RGB2CNT I VBAT GND RGB2 LED external ON/OFF Synchronism (LOFF, HON)* J 23 C4 ADDSEL I VBAT GND I2C device address change terminal R 24 B3 CLKIO I/O VBAT GND Standard clock input-and-output terminal V * A setup of a register is separately necessary to validate it. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 5/27 2011.04 - Rev.A BD2802GU Technical Note Equivalent circuit diagram A B VBAT G C VBAT E VIO I VBAT VBAT O VBAT U F VBAT J VBAT VIO L VBAT VBAT N Q VBAT VBAT R VBAT VBAT S VBAT VBAT V VBAT X VBAT VBAT VIO H VIO www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. VBAT 6/27 VIO VBAT 2011.04 - Rev.A BD2802GU Technical Note I2C BUS format The writing operation is based on the I2C slave standard. Slave address A7 A6 A5 A4 A3 A2 A1 R/W ADDSEL=L 0 0 1 1 0 1 0 0 ADDSEL=H 0 0 1 1 0 1 1 0 Slave address can be changed with the external terminal ADDSEL. Bit Transfer SCL transfers 1-bit data during H. SCL cannot change signal of SDA during H at the time of bit transfer. If SDA changes while SCL is H, START conditions or STOP conditions will occur and it will be interpreted as a control signal. SDA SCL SDA a state of stability SDA It can change Data are effective START and STOP condition When SDA and SCL are H, data is not transferred on the I2C- bus. This condition indicates, if SDA changes from H to L while SCL has been H, it will become START (S) conditions, and an access start, if SDA changes from L to H while SCL has been H, it will become STOP (P) conditions and an access end. SDA SCL S P STOP condition START condition Acknowledge It transfers data 8 bits each after the occurrence of START condition. A transmitter opens SDA after transfer 8bits data, and a receiver returns the acknowledge signal by setting SDA to L. DATA OUTPUT BY TRANSMITTER not acknowledge DATA OUTPUT BY RECEIVER acknowledge SCL S 1 2 9 clock pulse for acknowledgement START condition www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 8 7/27 2011.04 - Rev.A BD2802GU Technical Note Writing protocol A register address is transferred by the next 1 byte that transferred the slave address and the write-in command. The 3rd byte writes data in the internal register written in by the 2nd byte, and after 4th byte or, the increment of register address is carried out automatically. However, when a register address turns into the last address, it is set to 00h by the next transmission. After the transmission end, the increment of the address is carried out. *1 S X X X X X X X 0 A A7 A6 A5 A4 A3 A2 A1 A0 A D7 D6 D5 D4 D3 D2 D1 D0 A slave address register address *1 D7 D6 D5 D4 D3 D2 D1 D0 A P DATA DATA register address increment R/W=0(write) register address increment A=acknowledge(SDA LOW) A=not acknowledge(SDA HIGH) S=START condition P=STOP condition *1: Write Timing from master to slave from slave to master Timing diagram SDA t BUF t SU;DAT t LOW t HD;STA SCL t HD;STA S t SU;STO t SU;STA t HD;DAT Sr t HIGH P Electrical Characteristics(Unless otherwise specified, Ta=25 oC, VBAT=3.6V, VIO=1.8V) Standard-mode Parameter Symbol Min. Typ. Max. Min. I2C BUS format SCL clock frequency fSCL 0 100 0 LOW period of the SCL clock tLOW 4.7 1.3 HIGH period of the SCL clock tHIGH 4.0 0.6 Hold time (repeated) START condition After this period, the first clock is generated Set-up time for a repeated START condition Data hold time Data set-up time Set-up time for STOP condition Bus free time between a STOP and START condition www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. S Fast-mode Typ. Max. - 400 - kHz s s Unit tHD;STA 4.0 - - 0.6 - - s tSU;STA 4.7 - - 0.6 - - s tHD;DAT tSU;DAT tSU;STO 0 250 4.0 - 3.45 - 0 100 0.6 - 0.9 - s ns s tBUF 4.7 - - 1.3 - - s 8/27 2011.04 - Rev.A BD2802GU Technical Note Register map Address W/R 00h Resister data Function D7 D6 D5 D4 D3 D2 D1 D0 W - - CLKMD CLKEN - - - SFTRST Soft Reset clock setup 01h W - RGB2MEL RGB2OS RGB2EN - RGB1MEL RGB1OS RGB1EN RBG-LED control 02h W - TRGB1(2) TRGB1(1) TRGB1(0) RGB1-hour setup 03h W - IR11(6) IR11(5) IR11(4) IR11(3) IR11(2) IR11(1) IR11(0) R1 current 1 setup 04h W - IR12(6) IR12(5) IR12(4) IR12(3) IR12(2) IR12(1) IR12(0) R1 current 2 setup 05h W - - - - PR1(3) PR1(2) PR1(1) PR1(0) R1 Wave patturn setup 06h W - IG11(6) IG11(5) IG11(4) IG11(3) IG11(2) IG11(1) IG11(0) G1 current 1 setup 07h W - IG12(6) IG12(5) IG12(4) IG12(3) IG12(2) IG12(1) IG12(0) G1 current 2 setup 08h W - - - - PG1(3) PG1(2) PG1(1) PG1(0) G1 Wave patturn setup 09h W - IB11(6) IB11(5) IB11(4) IB11(3) IB11(2) IB11(1) IB11(0) B1 current 1 setup 0Ah W - IB12(6) IB12(5) IB12(4) IB12(3) IB12(2) IB12(1) IB12(0) B1 current 2 setup 0Bh W - - - - PB1(3) PB1(2) PB1(1) PB1(0) B1 Wave patturn setup 0Ch W - TRGB2(2) TRGB2(1) TRGB2(0) RGB2-hour setup 0Dh W - IR21(6) IR21(5) IR21(4) IR21(3) IR21(2) IR21(1) IR21(0) R2 current 1 setup 0Eh W - IR22(6) IR22(5) IR22(4) IR22(3) IR22(2) IR22(1) IR22(0) R2 current 2 setup 0Fh W - - - - PR2(3) PR2(2) PR2(1) PR2(0) R2 Wave patturn 10h W - IG21(6) IG21(5) IG21(4) IG21(3) IG21(2) IG21(1) IG21(0) G2 current 1 setup 11h W - IG22(6) IG22(5) IG22(4) IG22(3) IG22(2) IG22(1) IG22(0) G2 current 2 setup 12h W - - - - PG2(3) PG2(2) PG2(1) PG2(0) G2 Wave patturn setup 13h W - IB21(6) IB21(5) IB21(4) IB21(3) IB21(2) IB21(1) IB21(0) B2 current 1 setup 14h W - IB22(6) IB22(5) IB22(4) IB22(3) IB22(2) IB22(1) IB22(0) B2 current 2 setup 15h W - - - - PB2(3) PB2(2) PB2(1) PB2(0) B2 Wave patturn setup SFRGB1(1) SFRGB1(0) SRRGB1(1) SRRGB1(0) SFRGB2(1) SFRGB2(0) SRRGB2(1) SRRGB2(0) Input "0" for "-". Vacancy address may be use for test. Prohibit to accessing the address that isn't mentioned and the register for test. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 9/27 2011.04 - Rev.A BD2802GU Technical Note Register Description Adress 00h <Soft Reset> BIT Name Initial D7 D6 D5 D4 D3 D2 D1 D0 CLKMD CLKEN SFTRST 0 0 0 Adress 01h 1 Clock Output mode Clock input and output Effective Reset <RGB LED control > BIT Name Init D7 D6 D5 D4 D3 D2 D1 D0 RGB2MEL RGB2OS RGB2EN RGB1MEL RGB1OS RGB1EN 0 0 0 0 0 0 * * Function 0 Clock Input mode Clock input and output invalid Reset Release Function 0 RGB2 external control invalid RGB2 Stop RGB2 Stop RGB1 external control invalid RGB1 Stop RGB1 Stop 1 RGB2 external control valid RGB2 1 periodic operation RGB2 continuous operation RGB1 external control valid RGB1 1 periodic operation RGB1 continuous operation RGB*OS returns to 0 automatically after 1 cycle operation. RGB*EN precedes to RGB*OS. In use in 1 cycle operation, there is the necessity for RGB*EN=0. Adress 02h <RGB1 time> BIT Name Init D7 SFRGB1(1) 0 D6 SFRGB1(0) 0 D5 SRRGB1(1) 0 D4 SRRGB1(0) 0 D3 - - D2 TRGB1(2) 0 D1 TRGB1(1) 0 D0 TRGB1(0) 0 Function 0 1 SFRGB1(1) SFRGB1(0) Slope Down transition 0 0 0 0 1 Wave form cycle / 16 1 0 Wave form cycle / 8 1 1 Wave form cycle / 4 It is a theoretical value on logic control, and the reaction time of the analog section is not included."Slope time" is the time from a slope start to a slope end. SRRGB1(1) SRRGB1(0) Slope Up transition 0 0 0 0 1 Wave form cycle / 16 1 0 Wave form cycle / 8 1 1 Wave form cycle / 4 It is a theoretical value on logic control, and the reaction time of the analog section is not included."Slope time" is the time from a slope start to a slope end. TRGB1(2) 0 0 0 0 1 1 1 1 TRGB1(1) 0 0 1 1 0 0 1 1 TRGB1(0) 0 1 0 1 0 1 0 1 Wave form cycle 0.131 s 0.52 s 1.05 s 2.10 s 4.19 s 8.39 s 12.6 s 16.8 s Setting time is counted based on the frequency of OSC. The above-mentioned value is a value at the time of Typ (1MHz). When operating by the external clock, input frequency is a value at the time of Typ (250kHz). Refer to "Use of a RGB wave setup " for the detailed function of each register of this page. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 10/27 2011.04 - Rev.A BD2802GU Technical Note Adress 03h <R1 current 1setup > BIT Name Init D7 D6 IR11(6) 0 D5 IR11(5) 0 D4 IR11(4) 0 D3 IR11(3) 0 D2 IR11(2) 0 D1 IR11(1) 0 D0 IR11(0) 0 Adress 04h Name Init D7 D6 IR12(6) 0 D5 IR12(5) 0 D4 IR12(4) 0 D3 IR12(3) 0 D2 IR12(2) 0 D1 IR12(1) 0 D0 IR12(0) 0 IR11(6) IR11(5) IR11(4) IR11(3) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 At RGBISETpin 120k connection IR11(2) 0 0 1 1 IR11(1) 0 0 1 1 IR11(0) 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA IR12(0) 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA Function 0 - 1 - IR12(6) IR12(5) IR12(4) IR12(3) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 At RGBISETpin 120k connection IR12(2) 0 0 1 1 IR12(1) 0 0 1 1 <R1 Wave Pattern > BIT Name Init D7 D6 D5 D4 - - D3 PR1(3) 0 D2 PR1(2) 1 D1 PR1(1) 1 D0 PR1(0) 1 Adress 06h 1 - <R1 current2 setup > BIT Adress 05h Function 0 - Function 0 PR1(3) 0 0 0 1 1 1 1 - PR1(2) 0 0 0 1 1 1 PR1(1) 0 0 1 0 1 1 PR1(0) 0 1 0 1 0 1 Wave Pattern1 Pattern2 Pattern3 Pattern14 Pattern15 Pattern16 <G1 current1 setup > BIT Name Init D7 D6 IG11(6) 0 D5 IG11(5) 0 D4 IG11(4) 0 D3 IG11(3) 0 D2 IG11(2) 0 D1 IG11(1) 0 D0 IG11(0) 0 Function 0 - 1 - IG11(6) IG11(5) IG11(4) IG11(3) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 At RGBISETpin 120k connection IG11(2) 0 0 1 1 IG11(1) 0 0 1 1 IG11(0) 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA Refer to "Use of a RGB wave setup " for the detailed function of each register of this page. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 11/27 2011.04 - Rev.A BD2802GU Technical Note Adress 07h <G1 current2 setup > BIT Name Init D7 D6 - - IG12(6) 0 D5 IG12(5) 0 D4 IG12(4) 0 D3 IG12(3) 0 D2 IG12(2) 0 D1 IG12(1) 0 D0 IG12(0) 0 Adress 08h Name Init D7 D6 D5 D4 - - D3 PG1(3) 0 D2 PG1(2) 1 D1 PG1(1) 1 D0 PG1(0) 1 IG12(6) IG12(5) IG12(4) IG12(3) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 At RGBISETpin 120k connection IG12(2) 0 0 1 1 IG12(1) 0 0 1 1 IG12(0) 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA Function 0 PG1(3) 0 0 0 1 1 1 1 - PG1(2) 0 0 0 1 1 1 PG1(1) 0 0 1 0 1 1 PG1(0) 0 1 0 1 0 1 Wave Pattern 1 Pattern 2 Pattern 3 Pattern 14 Pattern 15 Pattern 16 <B1 current1setup > BIT Name Init D7 D6 - - IB11(6) 0 D5 IB11(5) 0 D4 IB11(4) 0 D3 IB11(3) 0 D2 IB11(2) 0 D1 IB11(1) 0 D0 IB11(0) 0 Adress 0Ah 1 - <G1 G1 Wave Pattern > BIT Adress 09h Function 0 - Function 0 - 1 - IB11(6) IB11(5) IB11(4) IB11(3) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 At RGBISETpin 120k connection IB11(2) 0 0 1 1 IB11(1) 0 0 1 1 IB11(0) 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA IB12(0) 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA <B1 current2setup > BIT Name Init D7 D6 - - IB12(6) 0 D5 IB12(5) 0 D4 IB12(4) 0 D3 IB12(3) 0 D2 IB12(2) 0 D1 IB12(1) 0 D0 IB12(0) 0 Function 0 - 1 - IB12(6) IB12(5) IB12(4) IB12(3) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 At RGBISETpin 120k connection IB12(2) 0 0 1 1 IB12(1) 0 0 1 1 Refer to "Use of a RGB wave setup " for the detailed function of each register of this page. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 12/27 2011.04 - Rev.A BD2802GU Technical Note Adress 0Bh <B1 Wave Pattern > BIT Name Init D7 D6 D5 D4 - - D3 PB1(3) 0 D2 PB1(2) 1 D1 PB1(1) 1 D0 PB1(0) 1 Adress 0Ch Function 0 PB1(3) 0 0 0 1 1 1 1 - PB1(2) 0 0 0 1 1 1 PB1(1) 0 0 1 0 1 1 PB1(0) 0 1 0 1 0 1 Wave Pattern1 Pattern2 Pattern3 Pattern14 Pattern15 Pattern16 <RGB2 time > BIT Name Init D7 SFRGB2(1) 0 D6 SFRGB2(0) 0 D5 SRRGB2(1) 0 D4 SRRGB2(0) 0 D3 - - D2 TRGB2(2) 0 D1 TRGB2(1) 0 D0 TRGB2(0) 0 Function 0 1 SFRGB2(1) SFRGB2(0) Slope Down transition 0 0 0 0 1 Wave form cycle / 16 1 0 Wave form cycle / 8 1 1 Wave form cycle / 4 It is a theoretical value on logic control, and the reaction time of the analog section is not included. "Slope time" is the time from a slope start to a slope end. SRRGB2(1) SRRGB2(0) Slope up transition 0 0 0 0 1 Wave form cycle / 16 1 0 Wave form cycle / 8 1 1 Wave form cycle / 4 It is a theoretical value on logic control, and the reaction time of the analog section is not included. "Slope time" is the time from a slope start to a slope end. TRGB2(2) 0 0 0 0 1 1 1 1 TRGB2(1) 0 0 1 1 0 0 1 1 TRGB2(0) 0 1 0 1 0 1 0 1 Wave form cycle 0.131 s 0.52 s 1.05 s 2.10 s 4.19 s 8.39 s 12.6 s 16.8 s Setting time is counted based on the frequency of OSC. The above-mentioned value is a value at the time of Typ (1MHz). When operating by the external clock, input frequency is a value at the time of Typ (250kHz) Refer to "Use of a RGB wave setup " for the detailed function of each register of this page. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 13/27 2011.04 - Rev.A BD2802GU Technical Note Adress 0Dh <R2 current 1setup> BIT Name Init D7 - - D6 IR21(6) 0 D5 IR21(5) 0 D4 IR21(4) 0 D3 IR21(3) 0 D2 IR21(2) 0 D1 IR21(1) 0 D0 IR21(0) 0 Adress 0Eh Name Init D7 D6 - - IR22(6) 0 D5 IR22(5) 0 D4 IR22(4) 0 D3 IR22(3) 0 D2 IR22(2) 0 D1 IR22(1) 0 D0 IR22(0) 0 IR21(5) IR21(4) IR21(3) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 At RGBISETpin 120k connection IR21(2) IR21(1) IR21(0) 0 0 1 1 0 0 1 1 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA Function 0 IR22(6) IR22(5) 1 IR22(4) IR22(3) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 At RGBISETpin 120k connection IR22(2) IR22(1) IR22(0) 0 0 1 1 0 0 1 1 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA <R2 Wave Pattern setup> BIT Name Init D7 D6 D5 D4 - - D3 PR2(3) 0 D2 PR2(2) 1 D1 PR2(1) 1 D0 PR2(0) 1 Adress 10h IR21(6) 1 - <R2 current 2setup> BIT Adress 0Fh Function 0 - Function 0 PR2(3) 0 0 0 1 1 1 1 - PR2(2) 0 0 0 1 1 1 PR2(1) 0 0 1 0 1 1 PR2(0) 0 1 0 1 0 1 Wave Pattern 1 Pattern 2 Pattern 3 Pattern 14 Pattern 15 Pattern 16 <G2 current 1setup> BIT Name Init D7 - - D6 IG21(6) 0 D5 IG21(5) 0 D4 IG21(4) 0 D3 IG21(3) 0 D2 IG21(2) 0 D1 IG21(1) 0 D0 IG21(0) 0 Function 0 IG21(6) IG21(5) 1 IG21(4) IG21(3) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 At RGBISETpin 120k connection IG21(2) IG21(1) IG21(0) 0 0 1 1 0 0 1 1 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA Refer to "Use of a RGB wave setup " for the detailed function of each register of this page. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 14/27 2011.04 - Rev.A BD2802GU Technical Note Adress 11h <G2 current 2setup> BIT Name Init D7 - - D6 IG22(6) 0 D5 IG22(5) 0 D4 IG22(4) 0 D3 IG22(3) 0 D2 IG22(2) 0 D1 IG22(1) 0 D0 IG22(0) 0 Adress 12h Name Init D7 D6 D5 D4 - - D3 PG2(3) 0 D2 PG2(2) 1 D1 PG2(1) 1 D0 PG2(0) 1 IG22(5) IG22(4) IG22(3) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 At RGBISETpin 120k connection IG22(2) IG22(1) IG22(0) 0 0 1 1 0 0 1 1 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA Function 0 PG2(3) 0 0 0 1 1 1 1 - PG2(2) 0 0 0 1 1 1 PG2(1) 0 0 1 0 1 1 PG2(0) 0 1 0 1 0 1 Wave Pattern 1 Pattern 2 Pattern 3 Pattern 14 Pattern 15 Pattern 16 <B2 current 1setup> BIT Name Init D7 - - D6 IB21(6) 0 D5 IB21(5) 0 D4 IB21(4) 0 D3 IB21(3) 0 D2 IB21(2) 0 D1 IB21(1) 0 D0 IB21(0) 0 Adress 14h IG22(6) 1 - <G2 Wave Pattern setup > BIT Adress 13h Function 0 - Function 0 IB21(6) IB21(5) 1 IB21(4) IB21(3) 0 0 0 0 0 0 1 1 1 1 1 1 At RGBISETpin 120k connection 0 0 1 1 IB21(2) IB21(1) IB21(0) 0 0 1 1 0 0 1 1 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA <B2 current 2setup> BIT Name Init D7 - - D6 IB22(6) 0 D5 IB22(5) 0 D4 IB22(4) 0 D3 IB22(3) 0 D2 IB22(2) 0 D1 IB22(1) 0 D0 IB22(0) 0 Function 0 IB22(6) IB22(5) 1 IB22(4) IB22(3) 0 0 0 0 0 0 1 1 1 1 1 1 At RGBISETpin 120k connection 0 0 1 1 IB22(2) IB22(1) IB22(0) 0 0 1 1 0 0 1 1 0 1 0 1 Current 0 0.2mA 0.2mA step 25.2mA 25.4mA Refer to "Use of a RGB wave setup " for the detailed function of each register of this page. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 15/27 2011.04 - Rev.A BD2802GU Technical Note Adress 15h <B2 Wave Pattern setup > BIT Name Init D7 D6 D5 D4 - - D3 PB2(3) 0 D2 PB2(2) 1 D1 PB2(1) 1 D0 PB2(0) 1 Function PB2(3) 0 0 0 1 1 1 0 1 - - PB2(2) 0 0 0 1 1 1 PB2(1) 0 0 1 0 1 1 PB2(0) 0 1 0 1 0 1 Wave Pattern 1 Pattern 2 Pattern 3 Pattern 14 Pattern 15 Pattern 16 Refer to "Use of a RGB wave setup " for the detailed function of each register of this page. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 16/27 2011.04 - Rev.A BD2802GU Technical Note RGB LED Driver Operation Description - Two drivers "RGB1 (R1LED, G1LED, B1LED)" and "RGB2 (R2LED, G2LED, B2LED)" are mounted. - A slope function is incorporated to control drivers independently. - Refer to RGB Waveform Setting for more information about output waveform setting. - The LED current can be set via a resistance value (RISET) to be connected to the RGBISET terminal. The maximum current value can be derived from the following expression: ILEDmax [A] = 3.048 / RISET [k] (Typ) However, this setting must be made so that the maximum current value can be less than or equal to 30.48mA. In addition, the RGBISET terminal has an overcurrent protection circuit to prevent the excessive LED current from flowing for low impedance to the ground. - Note that the setting voltage shall be higher than or equal to a saturation voltage (0.2V) in the constant current circuit. When LED Vf is large, the LED destination shall be connected to another step-up circuit. RGB*EN RGB*EN RGB*OS or RFB*OS Ton (Max:20ms) LED LED current - The LED destination is fixed before on (RGB*EN=Hi or RGB*OS=Hi). VLED VLED RGB*EN Or RGB*OS RGB*EN Or RGB*OS The synchronism of RGB1/RGB2 The period of RGB1 and RGB2 and start, stop timing can be set up independently. When synchronizes RGB1 and RGB2, You must start an internal counter at the same time under the state of resetting. (Internal Counter are prepared for each of RGB1 and RGB2, so You must reset both.) <How to reset internal Counter> Inside Counter can be reset by carrying out one of following actions. * * * Reset by hard reset (RSTB_IL). (RGB1, RGB2 is reset together.) Reset by soft reset. (RGB1, RGB2 is reset together.) It is written register of the current setup (I1I2), the slope setup, the period setup and the pattern setup. Internal Counter of RGB1 is reset when it is written between Address=0Bh from 02h. Internal Counter of RGB2 is reset when it is written between Address=15h from 0Ch. Counter is reset as to overwriting the same value. Note) Internal Counter isn't reset if write RGB1EN =L and RGB2EN =L. (Address=01h). When it write RGB1EN=L (RGB2EN=L), inside Counter is held, and IC will operate from the held state at next restart. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 17/27 2011.04 - Rev.A BD2802GU Technical Note RGB Waveform Setting Various kinds of RGB control can be implemented by designating waveform cycles, waveform patterns, current settings 1, 2 and rising/falling slope times. To activate a RGB waveform, a continuous operation via RGB*EN or a single-shot operation via RGB*OS can be selected. In addition, when control via the external terminal RGB*CNT is enabled via RGB*MEL, the corresponding LED can be lit in synchronization with the external signal. 1. Waveform cycle A single cycle time is set for a waveform pattern. This setting can be made independently for RGB1 and RGB2. 2. Waveform pattern A pattern in a waveform cycle is set. Sixteen types of waveform patterns can be set in units of waveform patterns. For concrete waveform patterns, refer to the timing diagram shown on the next page. 3. Current settings 1 and 2 (I1, I2) Two currents in a waveform pattern are set. When the maximum current value is 25.4mA, it is possible to set the current ranging from 0 to 25.4mA with an increment of 0.2mA (128 steps). The polarity of a waveform is determined by the greater-than/ less-than relationship in the current setting. This setting can be made in units of terminals. 4. Rising/falling slope time A current change time during switching between current settings 1 and 2 is set. A time per step (0.2mA) is calculated based on a difference between the currents selected in current settings 1, 2 and a setting slope time. For this reason, a time per step (0.2mA) is short when a difference between setting currents I1 and I2 is large. In contrast, it is long when a difference between setting currents I1 and I2 is small. Regardless of current settings 1 and 2, a rising slope time applies at current increase and a falling slope time applies at current decrease. For concrete waveform images, refer to the timing diagram shown on the next page. 5. External terminal synchronization control When control via the external terminal RGB*CNT is enabled via RGB*MEL, lighting is enabled if the input external signal goes "H." In contrast, it is disabled if the external input signal goes "L." In this way, synchronization with the external signal is enabled so that LED can be blinked in conjunction with a ringing tone (a melody signaling a ringtone). A RGB thin line indicates an image where external terminal control does not take place. Waveform cycle R*LED G*LED B*LED RGB*CNT RGB*MEL External terminal control is enabled. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Remains "Enabled" with RGB*MEL=1 and RGB*CNT=H 18/27 External terminal control is disabled. 2011.04 - Rev.A BD2802GU Technical Note Wave cycle Register data Wave pattern 1 (00h) Wave pattern2 (01h) Wave pattern 3 (02h) Wave pattern 4 (03h) Wave pattern 5 (04h) Wave pattern 6 (05h) Wave pattern 7 (06h) Wave pattern 8 (07h) Wave pattern 9 (08h) Wave pattern 10 (09h) Wave pattern 11 (0Ah) Wave pattern 12 (0Bh) Wave pattern 13 (0Ch) Wave pattern 14 (0Dh) Wave pattern 15 (0Eh) Wave pattern 16 (0Fh) I1 I2 I1 I2 I1 I2 I1 I2 I1 I2 I1 I2 I1 I2 I1 I1 I2 I1 I1 I1 I2 I2 I1 I1 I2 I2 I1 I1 I1 I2 I2 I1 I1 I2 I1 I1 I1 I1 I2 I2 I1 I2 I1 I1 I2 I1 I2 exThe image of current change of Wave pattern 11 Slope Down transition Current 2(I2) Slope uptransition Current 1(I1) RGB wave setting timing diagram 6. Clock I/O A reference clock I/O function is mounted in this IC chip. When two IC chips are used to extend an illumination capability, clock supply to the other RGB LED driver can be accomplished for synchronization with this LSI chip. This setting can be made via the register. Clock output can be made with CLKEN=1 and CLKMD=1. Register CLKIO terminal state CLKEN CLKMD 0 0/1 Input 1 www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 0 1 Input Output 19/27 Clock reception Does not receive external clocks. Operates on external clocks. - 2011.04 - Rev.A BD2802GU Technical Note When two BD2802GU drivers are used and the clock is shared by CLKIO: Because a sequence is already programmed within an IC chip for RGB falling, "Enable" shall be set to "OFF" and clock supply shall be continued for at least three clocks so that operations can be performed using external clocks. Enable Master enabled Slave enabled Enable (min=0ms) min= min = slave input clock (3 clocks) 3 ( min=15s) (For master clocks in use: min = 15 s) Master: Chip using CLKIO as output Slave: Chip using CLKIO as input *Even in independent slave mode, its setting "Enable" shall be reset to "OFF" and then clock supply must be continued for 3 clocks or more. Clock I/O switching shall be avoided during RGB operation. Enable: CLKEN, RGB1EN, RGB2EN, RGB1OS, RGB2OS - Setting example Master side (clock output side) RGB waveform setting Slave side (clock input side) RGB waveform setting Master side Clock output setting CLKEN=1, CLKMD=1 ... Performs clock output. Slave side Clock input setting CLKEN=1, CLKMD=0 ... Allows clock reception. Master side RGB lighting This duration shall be short as much as possible. Slave side RGB lighting www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 20/27 2011.04 - Rev.A BD2802GU Technical Note 7. RGB waveform setting examples 1 [Example 1] Normal operation 416Hz [Example 4] 16Hz operation Waveform cycle R*LED R*LED G*LED G*LED B*LED B*LED RGB*EN=1 RGB*EN=0 RGB*EN=1 Selecting a waveform pattern 8 causes a continuous normal operation to take place through the setting current 1. 2 [Example 2] Blinking 54 [Example 5] Continuous lighting of four LEDs Waveform cycle R*LED G*LED G*LED B*LED B*LED RGB*EN=0 This example shows that lighting occurs continuously in the order of white, red, red and red. To achieve this, waveform patterns 16, 1 and RGB*OS single cycle operation need to be combined. 67 6] [Example 7-color change slope operation Waveform cycle R*LED R*LED G*LED G*LED B*LED B*LED RGB*EN=1 RGB*EN= RGB*EN=1 When a rising/falling slope time is longer than the setting made in example 2, a continuous color change is made by slope operation. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Waveform cycle RGB*OS=1 Setting a rising/falling slope time to "0" causes blinking to take place. Phase switching takes place via the setting currents of R and G. [Example 3] Slope operation RGB*EN=0 Combining the settings of a waveform pattern 11 and a waveform cycle 131ms causes blinking at a rate of 15.3Hz (approx. 16Hz). R*LED RGB*EN=1 Waveform cycle Waveform cycle RGB*EN= R, G and B waveform patterns are set in a way that any of R, G and B changes constantly. 21/27 2011.04 - Rev.A BD2802GU Technical Note 8. RGB slope waveforms - Example of waveform at activation Current setting: I1 < I2 (R G B*EN = 1) I2 I1 (O FF) (R G B*O S = 1) R G B*EN or R G B*O S = 1 R G B*EN = 0 Current setting: I1 > I2 I1 (RG B*EN = 1) I2 (O FF) (R G B*O S = 1) R G B*EN or R G B*O S = 1 R G B*EN = 0 - Current difference in each channel (example) I2 ( A ) I2 ( B ) Transition takes place in units of steps but the time per step is set based on internal calculation so that the slope arrival time is quasi-equal. I1 (B ) I1 ( A ) Slope duration 9. Setting change in slope duration A slope operation is performed by an internal sequencer. When an attempt is made to change the setting in a slope duration, the active slope operation is reset and a newly set slope operation is restarted. In this case, however, LED lighting stops for a maximum of 16.4ms (OSC frequency=typ) for synchronization with the internal clock until the operation is restarted. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 22/27 2011.04 - Rev.A BD2802GU Technical Note Description of other operations 1. Reset There are two types of reset: software reset and hardware reset. (1) Software reset - Setting the register (SFTRST) to "1" causes all the registers to be initialized. - The registers subject to software reset automatically return to zero (Auto Return 0). (2) Hardware reset - Changing the RESETB terminal setting from "H" to "L" causes a state subject to hardware reset. - Attempting hardware reset causes the states of all registers and output terminals to be initialized to their initial values, so that address reception is entirely stopped. - Attempting reset in the hardware reset state causes the RESETB terminal state to change from "L" to "H" and vice versa. - The RESETB terminal is provided with a filter circuit and a duration of 5s or less with the terminal set to "L" is not recognized as hardware reset. (3) Reset sequence - When hardware reset is attempted during software reset, software reset is already cleared when hardware reset is cleared (because the software reset initial value is 0). 2. Thermal shutdown The thermal shutdown is effective for LED and OSC portions. The thermal shutdown function is activated when the detected temperature is approx. 195C. The detected temperature has a hysteresis and the detection cancel temperature is approx. 175C (reference value in design). 3. I/O portion While the RESETB terminal is in "L" state, no input signal is propagated to the IC logic portion because SDA and SCL input buffer operations are all stopped. When RESETB=L, output is fixed at "H." Level shifter SCL (SDA) Logic EN RESETB Special care should be taken because a current path may be formed via a terminal protection diode, depending on an I/O power-on sequence or an input level. 4. Power on/off sequence Voltage shall be applied as follows at driver activation. When a delay element is connected to a VIO voltage source and a reset cancel signal is input to the RESETB terminal, special care should be taken to the rising time of VIO voltage to delay the RESETB signal without fail. VBAT T VBATOFF VIO T R STB=m in 0.1m s T R ST=m in 0.1m s RESETB T AC SS=m in 0.1m s control Register Register control disabled Register control enabled Register control disabled 5. Terminating the unused terminals Be sure to set the test terminals and unused terminals as summarized in the following table.In addition, refer to the preceding equivalent circuit and terminate the above terminals in a way that no problem occurs during actual use. T1, T2, T3, T4 Test input terminals. Short-circuit these terminals to GND. Short-circuit these terminals to GND. LED terminals not to be used In this case, don't set the registers related to LEDs not to be used. RGB1CNT, RGB2CNT Short-circuit these terminals to GND.(Built-in pull-down resistance) CLKIO Short-circuit this terminal to GND.(Built-in pull-down resistance) ADDSEL Be sure to short-circuit this terminal to VBAT or GND. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 23/27 2011.04 - Rev.A BD2802GU Technical Note PCB pattern of the Power dissipation measuring board 1st layer(component) 2nd layer 3rd layer 4th layer 5th layer 6th layer 7th layer www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 8th layer (solder) 24/27 2011.04 - Rev.A BD2802GU Technical Note Notes for Use (1) Absolute Maximum Ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc. (2) Power supply and ground line Design PCB pattern to provide low impedance for the wiring between the power supply and the ground lines. Pay attention to the interference by common impedance of layout pattern when there are plural power supplies and ground lines. Especially, when there are ground pattern for small signal and ground pattern for large current included the external circuits, please separate each ground pattern. Furthermore, for all power supply pins to ICs, mount a capacitor between the power supply and the ground pin. At the same time, in order to use a capacitor, thoroughly check to be sure the characteristics of the capacitor to be used present no problem including the occurrence of capacity dropout at a low temperature, thus determining the constant. (3) Ground voltage Make setting of the potential of the ground pin so that it will be maintained at the minimum in any operating state. Furthermore, check to be sure no pins are at a potential lower than the ground voltage including an actual electric transient. (4) Short circuit between pins and erroneous mounting In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous mounting can break down the ICs. Furthermore, if a short circuit occurs due to foreign matters entering between pins or between the pin and the power supply or the ground pin, the ICs can break down. (5) Operation in strong electromagnetic field Be noted that using ICs in the strong electromagnetic field can malfunction them. (6) Input pins In terms of the construction of IC, parasitic elements are inevitably formed in relation to potential. The operation of the parasitic element can cause interference with circuit operation, thus resulting in a malfunction and then breakdown of the input pin. Therefore, pay thorough attention not to handle the input pins, such as to apply to the input pins a voltage lower than the ground respectively, so that any parasitic element will operate. Furthermore, do not apply a voltage to the input pins when no power supply voltage is applied to the IC. In addition, even if the power supply voltage is applied, apply to the input pins a voltage lower than the power supply voltage or within the guaranteed value of electrical characteristics. (7) External capacitor In order to use a ceramic capacitor as the external capacitor, determine the constant with consideration given to a degradation in the nominal capacitance due to DC bias and changes in the capacitance due to temperature, etc. (8) Thermal shutdown circuit (TSD) This LSI builds in a thermal shutdown (TSD) circuit. When junction temperatures become detection temperature or higher, the thermal shutdown circuit operates and turns a switch OFF. The thermal shutdown circuit, which is aimed at isolating the LSI from thermal runaway as much as possible, is not aimed at the protection or guarantee of the LSI. Therefore, do not continuously use the LSI with this circuit operating or use the LSI assuming its operation. (9) Thermal design Perform thermal design in which there are adequate margins by taking into account the permissible dissipation (Pd) in actual states of use. (10) About the pin for the test, the un-use pin Prevent a problem from being in the pin for the test and the un-use pin under the state of actual use. Please refer to a function manual and an application notebook. And, as for the pin that doesn't specially have an explanation, ask our company person in charge. (11) About the rush current Because the rush current flows momentarily for internal logic instability caused by a power-on sequence or delay, special care should be taken to the power supply coupling capacity, power supply, ground pattern wiring width and wiring. (12) About descriptions given in this document Though the function description and application node are design documents prepared for application design, we don't take liability for descriptions given in these documents. Be sure to decide applications after thoroughly investigating and evaluating the external devices as well as this BS2802GU LED driver. www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 25/27 2011.04 - Rev.A BD2802GU Technical Note Power Dissipation (On the ROHM's standard board) 1.6 Power Dissipation Pd W) 1.4 1250mW 1.2 Information of the ROHM's standard board Material : glass-epoxy Size : 50mmx58mmx1.75mm (8Layer) Pattern of the board: Refer to it that goes later. 1.0 0.8 0.6 0.4 0.2 0.0 0 25 50 75 100 125 150 Ta www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 26/27 2011.04 - Rev.A BD2802GU Technical Note Ordering part number B D 2 Part No. 8 0 2 G Part No. 2802 U - Package GU : VCSP85H2 E 2 Packaging and forming specification E2: Embossed tape and reel VCSP85H2 (BD2802GU) 2.80.1 1.0MAX 1PIN MARK 0.25 0.1 2.8 0.1 <Tape and Reel information> (0.15)INDEX POST B 1 0.40.1 E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 0.4 0.1 A E D C B A 3000pcs P=0.5 x 4 0.08 S 0.05 A B Embossed carrier tape Quantity Direction of feed S 24- 0.300.05 Tape 2 3 4 5 P=0.5x4 www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 1pin (Unit : mm) Reel 27/27 Direction of feed Order quantity needs to be multiple of the minimum quantity. 2011.04 - Rev.A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. R1120A