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AF1502 - Step-Down LED Driver

This page provides the datasheet information for the AF1502, a member of the AF1502-Alfa Step-Down LED Driver family.

Description

AF1502 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 AF1502 is from 4.2V to 23V.

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.

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Datasheet preview – AF1502

Datasheet Details

Part number AF1502
Manufacturer Alfa-MOS
File Size 272.68 KB
Description Step-Down LED Driver
Datasheet download datasheet AF1502 Datasheet
Additional preview pages of the AF1502 datasheet.

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Full PDF Text Transcription

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Alfa-MOS Technology AF1502 300KHz, 2A / 23V Step-Down LED Driver General Description AF1502 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 AF1502 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. 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.
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