FP7103

28V, 3A Buck Constant Current Switching Regulator

for White LED

This datasheet contains new product information.

Feeling Technology reserves the rights to modify the product specification without notice.

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Rev. 0.94

1/12

General Description

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 pin for enabling, 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& SOP-8L(EP)

Typical Application Circuit

FP7103

COMP

FB

EN

LX

LX

GND

GND

ON/OFF