APW7001 1X/1.5X/2X Charge Pump White LED Driver for Main and Sub-Displays Features General Description * * * The APW7001 is a high efficiency charge pump white LED driver; the device drives up to four white LEDs in the 1.5% LED Current Matching Powers Main and Sub-Display LEDs main display and up to two white LEDs in the sub-display with regulated constant current for uniform intensity. The High Efficiency Up to 90% Over Li-ion Battery supply voltage ranges from 2.7V to 5.5V and it is optimized for a Li-ion battery application. The APW7001 op- Discharge Output Current Up to 30mA per LED erates in 1x, 1.5x, and 2x charge pump modes and automatically switches the charge pump modes depend on 2.7V to 5.5V Operating Voltage the input voltage to maintain the required power for high power efficiency. The APW7001 provides up to 30mA per 1x/1.5x/2x Charge Pump Modes Low Shutdown Current: 2A Maximum LED and allows several methods such as the PWM signals on the ENM pin for main-display dimming and on Low Input Ripple and EMI the ENS pin for sub-display dimming. The two control logic pins, ENM and ENS, allow disabling or enabling the Internal Soft-Start Limits Inrush Current Short Circuit Current Limit main and sub-displays. The supply current is only 2mA in 2x mode, and the ENM and ENS are kept low for 20ms Thermal Shutdown Protection will allow the device to enter shutdown mode with 2A quiescent current. The APW7001 features current limit Output Over-Voltage Protection 16-pin QFN Package and short circuit protection. The APW7001 switches at 1MHz frequency and only requires four 1F ceramic ca- Lead Free and Green Devices Available (RoHS Compliant) pacitors and one resistor, and ensures low input current ripple and EMI. The APW7001 is available in a 16-pin QFN package. Applications PDA, Handheld Computer ILED 1 ILED 2 Portable Device ILED 3 Pin Configuration Cellular Phone White LED Back Light ILED 4 16 15 14 13 1 ILED 6 2 ENM 3 ENS 4 12 GND Metal GND Pad (Bottem) 11 C110 C1+ 9 5 6 7 8 C2+ ILED 5 VIN DSC VOUT * * * * ISET * * * * * * * * * * * C2- APW7001 QFN4x4-16 Top View ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 1 www.anpec.com.tw APW7001 Ordering and Marking Information Package Code QA : QFN4x4-16 Operating Ambient Temperature Range I : -40 to 85 oC Handling Code TR : Tape & Reel Assembly Material G : Halogen and Lead Free Device APW7001 Assembly Material Handling Code Temperature Range Package Code APW7001 QA : APW7001 XXXXX XXXXX - Date Code Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for MSL classification at lead-free peak reflow temperature. ANPEC defines "Green" to mean lead-free (RoHS compliant) and halogen free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight). Absolute Maximum Ratings Symbol VOUT VIN (Note 1) Rating Unit VOUT to GND Parameter -0.3 to +6 V VIN to GND -0.3 to +6 V -0.3 to +6 V -0.3 to +6 V -0.3 to +6 V -0.3 to 2 V VC1+, VC1-, C1+, C1-, C2+, C2- to GND VC2+, VC2VILED1-6 ILED1-6 to GND VENM, VENS ENM, ENS to GND VISET TJ ISET to GND Maximum Junction Temperature TSTG Storage Temperature TSDR Maximum Lead Soldering Temperature, 10 Seconds +150 C -65 ~ 150 C 260 C Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Thermal Characteristics (Note 2) Symbol JA Parameter Thermal Resistance -Junction to Ambient QFN4x4-16 Typical Value Unit 40 C/W Note 2 : JA is measured with the component mounted on a high effective thermal conductivity test board in free air. Recommended Operating Conditions Symbol VIN Parameter Input Voltage Rating Unit 2.8 to 4.5 V VOUT Output Voltage 3 to 4 V ILED LED Current 5 to 30 mA Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 2 www.anpec.com.tw APW7001 Recommended Operating Conditions (Cont.) Symbol IOUT Parameter Rating Output Current, VIN>3.5V, VF=3.1V, 1x mode 180 Output Current, 3.5V3.1V, VF=3.1V, 1.5x mode 120 Output Current, 3.1V2.8V, VF=3.1V, 2X mode TA Unit mA 90 Ambient Temperature C -40 to 85 Electrical Characteristics VIN = 2.85 to 5.5V, CIN = COUT = C1 = C2 = 1F (ESR = 0.03), ILED = 20mA, T A = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C. Symbol VIN VUVLO Parameter Test Conditions Input Voltage Under-voltage Lockout Threshold VIN falling Under-voltage Lockout Hysteresis IQ ILED-ERR Quiescent Current LED Current Accuracy Current Matching IISET VILED-TH FOSC ROUT APW7001 Unit Min. Typ. Max. 2.7 - 5.5 2.2 2.4 2.6 V - 50 - mV V in 1.5x/2x mode - 2 4 mA No switching in 1x mode - 0.5 1 mA EN=0 - 0.1 2 A 5mA2000 260 C 245 C 245 C 3 Reliability Test Program Test item SOLDERABILITY HOLT PCT TCT HBM MM Latch-Up Method JESD-22, B102 JESD-22, A108 JESD-22, A102 JESD-22, A104 MIL-STD-883-3015.7 JESD-22, A115 JESD 78 Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 18 Description 5 Sec, 245C 1000 Hrs, Bias @ 125C 168 Hrs, 100%RH, 2atm, 121C 500 Cycles, -65C~150C VHBM2KV VMM200V 10ms, 1tr100mA www.anpec.com.tw APW7001 Customer Service Anpec Electronics Corp. Head Office : No.6, Dusing 1st Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 2F, No. 11, Lane 218, Sec 2 Jhongsing Rd., Sindian City, Taipei County 23146, Taiwan Tel : 886-2-2910-3838 Fax : 886-2-2917-3838 Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 19 www.anpec.com.tw