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发布者:微桥FP7103 发布时间:2010/1/14 阅读:14109次    关键字: FP7103 LED
FP7103-28V,3A Buck White LED Driver IC


FP7103 28V, 3A Buck Constant Current Switching Regulator for White LED
General Description
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     The FP7103 is a PWM control buck converter designed to provide a simple, high efficiency solution for driving high power LEDs. With a 0.25V reference voltage feedback control to minimize power dissipation, an external resistor sets the current as needed for driving various types of LEDs. The FP7103 includes a high current P-MOSFET to realize high efficiency and excellent transient characteristics. The PWM control circuit is able to change the duty ratio linearly from 0 up to 100%. Other features include user accessible EN/DIM pin for enabling and PWM dimming of LEDs, thermal shutdown, cycle-by cycle current limit and over current protection.

Features
Wide Supply Voltage Operating Range: 3.6 to 28V 
Built-in P-MOSFET for 3A Loading Capability
Precision Feedback Reference Voltage: 0.25V (2%)
Low Current Consumption: 4mA
Internal Fixed Oscillator Frequency: 320KHz (Typ.)
Internal Soft-Start Function (SS)
Over Current Protection
Package: SOP-8L

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