R5523N SERIES USB HIGH-SIDE POWER SWITCH NO.EA-168-071107 OUTLINE The R5523N Series is CMOS-based high-side MOSFET switch IC for Universal Serial Bus (USB) applications. Low ON Resistance (Typ.130m) and low supply current (Typ.20A at active mode) are realized in this IC. An over-current limit circuit, a thermal shutdown circuit, and an under voltage lockout (UVLO) circuit are built-in as protection circuits. Further, a delay circuit for flag signal after detecting over-current, is embedded to prevent miss-operation of error flag because of inrush current. The R5523N Series is ideal for applications of protection for USB power supply. Since the package is small SOT23-5, high density mounting on board is possible. FEATURES * * * * * * * * * * Built-in P-channel MOSFET Switch Supply Current ......................................................Typ. 20A (at Active Mode) Switch ON Resistance ........................................Typ. 130m Output Current ......................................................Min. 500mA, Min. 250mA (2 types are available.) Flag Delay Time ....................................................Typ. 10ms. Package ................................................................SOT-23-5 Over- Current Limit / Short Circuit Protection Built-in Under Voltage Lockout (UVLO) Function Built-in Thermal Shutdown Protection Built-in Soft-start Function APPLICATIONS * USB Peripherals * Notebook PCs 1 R5523N BLOCK DIAGRAM IN OUT GATE CONTROL EN CURRENT LIMIT FLAG DELAY FLG UVLO THERMAL SHUTDOWN GND SELECTION GUIDE The output current and the logic of the enable pin for the ICs can be selected at the user's request. The selection can be made with designating the part number as shown below; R5523Nxxxx-xx-x Part Number a b c d e Code a b c d e 2 Contents Designation of Package Type: N: SOT-23-5 Designation of the output current. 001: 500mA 002: 250mA (Under development) Designation of the logic of the enable pin. A: active with "L" B: active with "H" Designation of Taping Type: TR (Refer to the taping specifications.) Designation of composition of pin plating: -F: Lead free plating (SOT-23-5) R5523N PIN CONFIGURATIONS * SOT-23-5 5 4 (mark side) 1 2 3 PIN DESCRIPTION Pin No Symbol Pin Description 1 EN Enable Pin 2 GND Ground Pin 3 FLG FLG pin (Open Drain Output) 4 VIN 5 VOUT Power Supply Pin Output Pin ABSOLUTE MAXIMUM RATINGS Symbol Item Rating Unit 6.5 V -0.3 to VIN+0.3 V VIN Input Voltage VEN Enable Pin Input Voltage VFLG Flag Voltage -0.3 to 6.5 V IFLG Flag Current 14 mA VOUT Output Voltage -0.3 to VIN+0.3 V IOUT Output Current PD Internal Limited Note1 Power Dissipation (SOT-23-5) * 420 mW Topt Operating Temperature -40 to +85 C Tstg Storage Temperature -55 to +125 C *Note1) For Power Dissipation please refer to PACKAGE INFORMATION to be described. ABSOLUTE MAXIMUM RATINGS Absolute Maximum ratings are threshold limit values that must not be exceeded ever for an instant under any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation above these absolute maximum ratings may cause degradation or permanent damage to the device. These are stress ratings only and do not necessarily imply functional operation below these limits. 3 R5523N ELECTRICAL CHARACTERISTICS * R5523N001A/B (Topt=25C) Symbol VIN IDD1 Item Conditions Input Voltage Supply Current 1 TYP. 2.2 MAX. Unit 5.5 V VOUT=open * 1 20 45 A 2 0.1 1.0 A 180 m IDD2 Supply Current 2 VOUT=open * RON Switch On Resistance VIN=5V, IOUT=500mA 130 ton Output Turn-on Delay VIN=5V, RL=60 400 ms toff Output Turn-off Delay VIN=5V, RL=60 5 ms VUVLO UVLO Threshold VIN=increasing 1.9 V VHYS UVLO Hysteresis Range VIN=decreasing 0.1 V ITH Current Limit Threshold Ilim Short Current Limit VOUT=0V tFD Over Current Flag Delay From Over Current to FLG= "L" TTS Thermal Shutdown Temperature Threshold IEN Enable Pin Input Current 1.6 1.0 1.5 A 0.5 0.75 1.3 A 5 10 20 ms TJ=increasing 135 C TJ=decreasing 120 C 0.01 VEN1 Enable Pin Input Voltage 1 VEN=increasing VEN2 Enable Pin Input Voltage 2 VEN=decreasing ILO Output Leakage Current VLF Flag "L" Output Voltage ISINK=1mA IFOF Flag Off Current VFLG=5.5V 1.0 2.0 A V 0.1 *1) EN= "L" (R5523NxxxA), EN= "H" (R5523NxxxB) *2) EN= "H" (R5523NxxxA), EN= "L" (R5523NxxxB) 4 MIN. 0.01 0.8 V 1.0 A 0.4 V 1.0 A R5523N * R5523N002A/B (Under Development) (Topt=25C) Symbol VIN IDD1 Item Conditions Input Voltage Supply Current 1 MIN. TYP. 2.2 MAX. Unit 5.5 V VOUT=open * 1 20 45 A 2 0.1 1.0 A 180 m IDD2 Supply Current 2 VOUT=open * RON Switch On Resistance VIN=5V, IOUT=500mA 130 ton Output Turn-on Delay RL=60 400 ms VUVLO UVLO Threshold VIN=increasing 1.9 V VHYS UVLO Hysteresis Range VIN=decreasing 1.8 V ITH Current Limit Threshold Ilim Short Current Limit VOUT=0V tFD Over Current Flag Delay From Over Current to FLG= "L" TTS Thermal Shutdown Temperature Threshold IEN Enable Pin Input Current 1.6 0.50 0.75 A 0.25 0.35 0.50 A 5 10 20 ms Tj =increasing 135 C Tj =decreasing 120 C 0.01 VEN1 Enable Pin Input Voltage 1 VEN=increasing VEN2 Enable Pin Input Voltage 2 VEN=decreasing ILO Output Leakage Current VLF Flag "L" Output Voltage ISINK=1mA IFOF Flag Off Current VFLAG=5.5V 1.0 2.0 A V 0.1 0.01 0.8 V 1.0 A 0.4 V 1.0 A *1) EN="L" (R5523NxxxA), EN="H" (R5523NxxxB) *2) EN="H" (R5523NxxxA), EN="L" (R5523NxxxB) 5 R5523N OPERATION This explanation is based on the typical application. * There is a parasitic diode between source and drain of the switch transistor. (Refer to the block diagram.) Because of this, in both cases of enable and disable, if the voltage of VOUT pin is higher than VIN pin, current flows from VOUT to VIN. * In case that VOUT pin and GND is short, if over-current would continue, the temperature of the IC would increase drastically. If the temperature of the IC is beyond 135C, the switch transistor turns off and the FLG pin level becomes "L". Then, when the temperature of the IC decreases equal or lower than 120C, the switch transistor turns on and FLG becomes "H". Unless the abnormal situation of VOUT pin is removed, the switch transistor repeats on and off. Refer to the 24) Thermal Shutdown operation in the typical characteristics. * Over-current level is set internally in the IC. There are three types of response against over-current: Under the condition that VOUT pin is short or large capacity is loaded, if the IC is enabled, the IC becomes constant current state. After the flag delay time passes, FLG becomes "L", that means over current state. Refer to the 23) current limit transient response of typical characteristics. While the switch transistor is on, if VOUT pin is short or large capacity is loaded, until the current limit circuit responds, large transient current flows. After the transient current is beyond the over-current detector threshold and delay time of the flag passes, FLG becomes "L", that means over current state. Refer to the 25), 26) over-current limit transient response of typical characteristics. In the case that load current gradually increases, the IC is not into the constant current state until the current is beyond over current limit. Once the level is beyond the over current detector threshold, load current is limited into over current limit level. Note that load current continuously flows until the load current is beyond the over-current detector threshold. * FLG pin is Nch Open drain output. If the over-current or over-temperature is detected, FLG becomes "L". If over-current is detected, FLG becomes "L" after the flag delay time tFD passes. Therefore flag signal is not out with inrush current. * UVLO circuit prevents that the switch transistor turns on until the input voltage is beyond 1.9V. UVLO circuit can operate when the IC is enabled. 6 R5523N TYPICAL APPLICATION AND TECHNICAL NOTES * * Bypass capacitor * Put a capacitance range from 0.1F to 1F bypass capacitor between VIN pin and GND pin of the IC. Without a bypass capacitor, in case of output short, because of the high side inductance of VIN pin, the ringing may be generated and it might be a cause of an unstable operation. Pull-up resistance value range of flag pin * Recommended pull-up resistance value range of flag pin is from 10k to 100k. 10k to100k VEN FLG EN VIN IN R5523Nxxxx OUT VOUT GND 0.1F R5523N00xx * Over-current limit Function In case that VOUT pin and GND is short, if over-current would continue, the temperature of the IC would increase drastically. If the temperature of the IC is equal or more than 135C (Typ.), the switch transistor turns off because of thermal shutdown protection. In other words, when the temperature of the IC becomes equal or more than 135C( Typ.), both the over-current limit circuit and thermal shutdown circuit work for the protection of the IC. 7 R5523N TIMING CHART 50% VEN 50% tOFF tON 90% VOUT 10% Output On Time/Output Off Time 10% FLG Output Delay Time tFD 50% VEN VFLG TEST CIRCUITS IOUT VEN 1 EN 2 GND 3 FLG OUT 5 VEN IN 4 A 1 EN 2 GND 3 FLG OUT V VON IN VIN 0.1F Supply Current Test Circuit 8 5 4 VIN 0.1F Switch On Resistance Test Circuit R5523N IOUT VOUT 1 OUT EN 5 1 EN 2 GND 3 FLG OUT 5 IN 4 A 10 VEN 2 GND 3 FLG VEN IN 4 VIN VIN 0.1F 0.1F Output On Time Test Circuit Over-current Limit Test Circuit IOUT 1 EN OUT 100k 5 1 EN OUT 5 V VEN 2 GND 3 FLG VEN IN 4 2 GND 3 FLG VOUT IN 4 VIN VIN 0.1F 0.1F Over-current Threshold Test Circuit 1 EN OUT Enable Input Voltage 5 100k 1 VEN 2 OUT 5 V GND VEN 3 EN FLG IN 0.1F 2 GND 3 FLG VOUT 4 IN 4 VIN 10k VFLG 100k Flag Output Delay Time Test VIN 0.1F UVLO Threshold Test 9 R5523N TYPICAL CHARACTERISTICS 1) Output Voltage vs. Output Current 2) Supply Current vs. Temperature 6.0 25 VIN=5.5V Supply Current IDD1[uA] Output Voltage VOUT(V) 5.0 4.0 VIN=2.2V 3.0 2.0 1.0 20 15 10 200 400 600 800 1000 VIN=5.5V 5 0.0 0 VIN=2.2V 0 1200 -40 -20 0 20 40 60 Temperature Topt [C] Output Current IOUT(mA) 3) Supply Current vs. Input Voltage 180 Switch ON Resistance RON [m] Supply Current IDD1 [uA] 85C 20 25C 15 -40C 10 5 0 2 2.5 3 3.5 4 4.5 Input Voltage VIN [V] 5 On Resistance vs. Input Voltage 140 120 100 80 60 VIN=2.2V 40 VIN=5.5V 20 0 -40 -20 1200 160 1000 ON[us] 180 140 85C 120 25C 100 80 0 20 40 60 Temperature Topt [C] 80 100 6) Output On Time vs. Temperature Output ON Time t Switch ON Resistance RON [m] 160 5.5 -40C 60 VIN=2.2V VIN=5.5V 800 600 400 200 0 40 2 10 100 4) On Resistance vs. Temperature 25 5) 80 3 4 Input Voltage VIN [V] 5 -40 -20 0 20 40 60 Temperature Topt[C] 80 100 R5523N 7) Output On Time vs. Input Voltage 8) Output Off Time vs. Temperature 14 1000 Output OFF Time tOFF[us] Output ON Time t ON[us] 1200 -40C 800 25C 600 85C 400 200 0 2.5 3 3.5 4 4.5 Input Voltage VIN[V] 5 5.5 9) Output Off Time vs. Input Voltage 8 6 4 2 -20 0 20 40 60 Temperature Topt[C] 80 100 10) Short-current Limit vs. Temperature 1000 Short Current Limit ILIM [mA] OFF[us] VIN=5.5V -40 14 Output OFF Time t VIN=2.2V 10 0 2 12 10 8 85C 6 25C 4 -40C 2 0 900 800 700 600 500 400 VDD=2.2V 300 VDD=5.5V 200 100 0 2 2.5 3 3.5 4 4.5 Input Voltage VIN[V] 5 5.5 1000 950 900 850 800 750 700 650 600 550 500 2.0 25C 85C 3.0 3.5 4.0 4.5 Input Voltage VIN [V] -20 0 20 40 60 Temperature Topt [C] 80 100 12) Over Current Threshold vs. Temperature -40C 2.5 -40 Over Current Threshold ITH(mA) 11) Short Current Limit vs. Input Voltage Short Current Limit ILIM[mA] 12 5.0 5.5 1500 1400 1300 1200 1100 1000 900 800 700 600 500 VDD=2.2V VDD=5.5V -40 -20 0 20 40 60 Temperature Topt(C) 80 100 11 R5523N 13) Over Current Threshold vs. Input Voltage 14) Enable Input Voltage vs. Temperature VIN=5.0V 2.0 1400 EN Threshold VEN1/VEN2[V] Over Current Threshold ITH(mA) 1500 1300 1200 -40C 1100 1000 25C 900 800 85C 700 600 500 2.0 2.5 3.0 3.5 4.0 4.5 Input Voltage VIN(V) 5.0 1.6 1.2 0.8 VIL 0.4 0.0 5.5 -40 15) Enable Input Voltage vs. VIN Input Voltage FLG Output Delay Time tFD[ms] EN Threshold Voltage VEN1/VEN2 [V] 1.2 0.8 VIH VIL 0.0 100 18 16 14 12 10 8 6 VIN=2.2V 4 VIN=5.5V 2 2.5 3 3.5 4 4.5 Input Voltage VIN[V] 5 5.5 -40 17) Flag Output Delay Time vs. VIN Input Voltage UVLO Threshold VUVLO[V] 16 25C 14 12 85C 10 8 6 4 2 0 2 2.5 3 3.5 4 4.5 Input Voltage VIN [V] 0 20 40 60 Temperature Topt [C] 80 100 2.2 -40C 18 -20 18) UVLO Threshold vs. Temperature 20 FLG Output Delay Time tFD[ms] 80 0 2 12 0 20 40 60 Temperature Topt[C] 20 1.6 0.4 -20 16) Flag Output Delay Time vs. Temperature Topt=25C 2.0 VIH 5 5.5 2.1 2.0 VIN increasing 1.9 1.8 VIN decreasing 1.7 1.6 -40 -20 0 20 40 60 Temperature Topt[C] 80 100 R5523N 19) UVLO Characteristic at VIn increasing 20) Turn on Response VEN=0V,CL=47F,RL=35 VIN=5V,CL=47F,RL=35 VEN (10V/div) VIN (2V/div) VFLG (2V/div) VFLG (5V/div) VOUT (2V/div) VOUT (5V/div) IOUT (100mA/div) IOUT (200mA/div) 4ms/div 1ms/div 21) Turn off Response 22) Inrush current VIN=5V,CL=47F,RL=35 VIN=5V, RL=35 VEN (10V/div) VEN (10V/div) VFLG (10V/div) VFLG (5V/div) CL=470F CL=220F VOUT (5V/div) CL=100F IOUT (200mA/div) IOUT (200mA/div) 2ms/div CL=10F 1ms/div 23) Current Limit Transient Response (Case: Enable to Short) 24) Thermal Shutdown Operation VIN=5V VIN=5V, CL=47F VEN (5V/div) VFLG (5V/div) VFLG (5V/div) VOUT (5V/div) 13.8ms VFLG (5V/div) IOUT (500mA/div) OUT (500mA/div) (500mA/div) IIOUT 2ms/div 100ms/div 13 R5523N 25) Current Limit Transient Response (Case: Output short during enable) VIN=5V, CL=47F 26) Zoomed in 25) VIN=5V, CL=47F VOUT (5V/div) VFLG (5V/div) VOUT (5V/div) IOUT (2A/div) IOUT (2A/div) 2ms/div 14 100us/div PACKAGE INFORMATION * PE-SOT-23-5-0610 SOT-23-5 (SC-74A) Unit: mm PACKAGE DIMENSIONS 2.90.2 +0.2 1.1 -0.1 1.90.2 (0.95) (0.95) 2 0 to 0.1 3 +0.1 0.15 -0.05 0.40.1 0.2 Min. 1 2.80.3 4 +0.2 1.6 -0.1 5 0.80.1 3.2 3.50.05 2.00.05 8.00.3 4.00.1 +0.1 1.5 0 0.30.1 1.750.1 TAPING SPECIFICATION 3.3 4.00.1 2.0Max. 1.10.1 TR User Direction of Feed TAPING REEL DIMENSIONS REUSE REEL (EIAJ-RRM-08Bc) (1reel=3000pcs) 20.5 210.8 60 +1 0 180 0 -1.5 130.2 11.41.0 9.00.3 PACKAGE INFORMATION PE-SOT-23-5-0610 POWER DISSIPATION (SOT-23-5) This specification is at mounted on board. Power Dissipation (PD) depends on conditions of mounting on board. This specification is based on the measurement at the condition below: (Power Dissipation (SOT-23-5) is substitution of SOT-23-6.) Measurement Conditions Standard Land Pattern Environment Mounting on Board (Wind velocity=0m/s) Board Material Glass cloth epoxy plactic (Double sided) Board Dimensions 40mm x 40mm x 1.6mm Copper Ratio Top side : Approx. 50% , Back side : Approx. 50% Through-hole 0.5mm x 44pcs Measurement Result (Topt=25C,Tjmax=125C) Standard Land Pattern Free Air Power Dissipation 420mW 250mW Thermal Resistance ja=(125-25C)/0.42W=263C/W 400C/W 500 40 On Board 420 400 Free Air 300 250 40 Power Dissipation PD(mW) 600 200 100 0 0 25 50 75 85 100 Ambient Temperature (C) 125 150 Power Dissipation Measurement Board Pattern IC Mount Area Unit : mm RECOMMENDED LAND PATTERN 0.7 MAX. 1.0 2.4 0.95 0.95 1.9 (Unit: mm)