AF1502A Datasheet PDF

Alfa-MOS AF1502A

AF1502A is a step down LED driver that is designed to meet maximum 2A constant current for high power LED application, and utilizes PWM control scheme that switches with 300Khz fixed frequency. The input voltage range of AF1502A is from 4.2V to 23V. It is suitable for series-parallel 1W, 3W, or 5W high power LED application due to the high operation voltage and output capability.

Part No.	AF1502A
Datasheet	AF1502A Download
Manufacturer	Alfa-MOS
Description	Step-Down LED Driver
Buy	Stock & Price

GENERAL DESCRIPTION

At 12V input voltage, this device can drive up to 15pcs 1W LED (3S-5P) with constant 350mA LED current. The PWM control circuit is able to very the duty ratio linearly from 0 up to 100%. This device also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at startup. An enable function, an over current protect function and a short circuit protect function are built inside, and when OCP or SCP happens, the operation frequency will be reduced from 300KHz to 60KHz. Also, an internal compensation block is built in to minimum external component count. The package is available in a standard SOP-8P.

FEATURES

Input voltage: 4.2V to 23V. Low Feedback Voltage 0.2V. Driving up to 15 LEDs (1W 3S-5P) at 12VIN Oscillation frequency: 300KHz typ. Soft-start, Current limit, Enable function Great Output Capability PWM or Analog Dimming Control Thermal Shutdown function Built-in internal P-channel MOS SOP-8P Package. Application High Power LED D...