General Description ACP2727 Tiny SOT23-6, 2A, 1MHz LED Driver DC/DC Features  VIN Operating Range : 3V to 30V  Low 200mV Feedback Voltage  Cycle by Cycle Current Limit: 2A  20KHz to 1MHz Wide PWM Dimming  Internal Soft Start  Over Voltage Protection  Over Temperature Protection  Small SOT23-6 Packages  RoHS Compliant and Halogen Free Application  7’-10’ LED Panel Backlight  Portable DVD/TV  GPS  Digital Photo Frame is an The ACP2727 inductor-based DC/DC boost converter designed to drive LED arrays. 2A switching current allows ACP2727 to be used in different 7' to 10' LCD panel backlights (3*13 LED arrays typically). A constant frequency 1MHz PWM control scheme is employed in this IC, which means tiny external com- ponents can be used. Specifically, 1mm tall 15µH inductor and 10µF output capacitor for the typical application is sufficient. The over output voltage protection in ACP2727, which protects the IC under open load condi- tion. The ACP2727 includes soft-start, current limit and OTSD to protect the circuit. The ACP2727 is available in standard SOT-23-6. is equipped Ordering and Marking Information Standard Part NO. ACP2727-200CTRAL VFB 200mV Package SOT23-6 Packing Tape&Reel Min. Quantity 3000PCS RoHS Pb Free Remark: for marking information,please see sample or contact our sales for more detail infomation. Typical Application Circuit VOUT VIN C1 10μF OFF ON PWM L1 15μH 6 2 4 VIN SW GND OVP ACP2727 EN FB 1 5 3 C2 10μF 13Strings total R1 0.75Ω Circuit for driving 39 WLEDs Rev.1.2.0 1 Apr-10 -2012 

ACP2727 Tiny SOT23-6, 2A, 1MHz LED Driver DC/DC Pin Configuration and Description Pin Configuration VIN 6 OVP 5 EN 4 1 2 3 SW GND FB Pin# 1 2 3 4 5 6 Symbol SW GND FB EN OVP VIN Pin Description Function Switching Pin. Ground Pin. The exposed pad must be soldered to a large PCB and connected to GND for maximum power dissipation. Feedback Pin, put a resistor to GND to setting the current. Enable and Dimming Control Pin. ( *note1 ) Over-voltage Protection Input Pin. Connect to the output directly. On OVP condition, the output voltage will be clamped Input Supply. BandGap OVP VIN OVP EN 1MHz OSC ibias VREF Current Bias OCP 2A Protection Circuit Note1: Connect to a high input to enable the IC or a low input to disable the IC. Function Block UVLO Timer 5ms + - Soft Start PWM Logic Buffer + - VREF SW FB GND Rev.1.2.0 2 Apr-10 -2012 

ACP2727 Tiny SOT23-6, 2A, 1MHz LED Driver DC/DC Absolute Maximum Ratings Parameter Input Voltage SW Voltage FB Voltage EN Voltage Thermal Resistance (Junction to Ambient, No Heat Sink) Junction Temperature Storage Temperature Range Operating Temperature Range Lead Temperature (Soldering, 10sec) ESD (Machine Model) ESD (Human Body Model) Symbol VIN VSW VFB VEN θJA TJ TSTG TOP TLEAD Value -0.3 to 32 -0.3 to 36 -0.3 to 4 -0.3 to 32 170 -40-150 -65 to 150 -40-85 260 600 4000 Unit V V V V ℃/W ℃ ℃ ℃ ℃ V V Unit V mV nA mA µA MHz % A mV V V ns ℃ Symbol Conditions IOUT=20mA, TA=-40℃ to 85℃ VFB=0.3V, no switching Electrical Characteristics o (VIN=3.6V, TA=25 C, unless otherwise specified.) Parameter Operating Voltage Feedback Voltage (Note 2) FB Pin Bias Current Quiescent Current Shutdown Quiescent Current Switching Frequency Maximum Duty Cycle Switch Current Limit Switch VCE Saturation Voltage VEN=0V D=60% VIN VFB IFB IQ DMAX ILIMIT ISHDN f VCESAT ISW=0.6A EN Pin Voltage OVP Voltage Soft-start Time Thermal Shutdown VEN VOVP tSS TOTSD Active high Active low Min 3 196 2.0 1.5 Typ Max 30 204 100 0.7 200 35 0.1 10 1.0 90 300 30 100 150 16 0.4 Rev.1.2.0 3 Apr-10 -2012 

ACP2727 Tiny SOT23-6, 2A, 1MHz LED Driver DC/DC            $ P   W         9ROWDJH ,/(' $ Q H U U X & ' ( /    ,QSXW9ROWDJH9    4XLHVFHQW&XUUHQWYV,QSXW (IILFLHQF\YV,QSXW9ROWDJH  Typical Operating Characteristics (WLED forward voltage (VIN)=5V at IF=300mA, unless otherwise noted.)        ,QSXW9ROWDJH9              Rev.1.2.0 4 Apr-10 -2012 

ACP2727 Tiny SOT23-6, 2A, 1MHz LED Driver DC/DC Package Information SOT23-6 H L C A D b e B A1 Symbol A A1 B b C D e H L Dimensions In Millimeters Min 0.889 0.000 1.397 0.250 2.591 2.692 0.838 0.080 0.300 Max 1.295 0.152 1.803 0.560 2.997 3.099 1.041 0.254 0.610 Dimensions In Inches Max 0.051 0.006 0.071 0.022 0.118 0.122 0.041 0.010 0.024 Min 0.031 0.000 0.055 0.010 0.102 0.106 0.033 0.003 0.012 SOT-23-6 Surface Mount Package Rev.1.2.0 5 Apr-10 -2012