AP1910 Anwell Semiconductor Corp.
Universal High Brightness LED Driver Controller Features General Description Buck system efficiency：>90% The AP1910 is a high-efficiency LED driver control Open loop peak current controller IC. Internal 8~450V linear regulator fewer components. Constant Current LED Driver current mode control IC. LED string from one to hundreds of diodes operate in either a constant frequency or constant Support linear and PWM dimming interface off-time mode. Requires few external components regulator which allows it to work in wide input voltage 8 Lead SOIC Packages range without external low voltage power supply. RoHS Compliant and 100% Lead (Pb)-Free The AP1910 is recommended in buck LED drivers and Green (Halogen Free with Commercial applications, LED luminance can be easily adjusted Standard) by AP1910's 0~100% PWM dimming and 0~245mV Constant off time function when duty cycle linear dimming functions. It drives LEDs with constant current and uses
The AP1910 is an open loop,
It can be programmed to It includes an 8~450V linear over 50%
The AP1910 is suitable for buck LED drivers. Applications The system has excellent stable response because of ● LED driver applications open loop current mode control. The controller ● RGB backlighting LED driver achieves good output current regulation and need no ● General purpose constant current source compensation. ● Chargers ● Non-isolation LED bulb Typical Application Circuit
(A) Constant Frequency mode
FUSE L
BD T1
CX1 85~265VAC TVS C1 LED1 C3 C2 D1
R1 CX2 N LED2 NTC R3 AP1910
8
7
6 RT VIN LD CS VDD GND 1
L1 2
R5 3 C4 5 PWMD All reserved by AnSC © 2012 Page: 1/11 GATE 4 C5 R4 V1.6-2014/09/29 AP1910 Anwell Semiconductor Corp. (B) Constant Off-time mode
FUSE L
BD T1
CX1 85~265VAC TVS C1 LED1 C3 C2 D1
R1 CX2 N LED2 NTC
R3 AP1910
8 RT 7
6 VIN LD CS VDD GND 1
L1 2 …