FP7208

Non-Synchronous PWM Boost Controller for LED Driver

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Rev. 0.64

1/13

General Description

The FP7208 is boost topology switching regulator for LED driver. It provides built-in gate driver

pin for driving external N-MOSFET. The non-inverting input of error amplifier connects to a 0.2V

reference voltage. It has programmable soft start time set by external capacitor, and over voltage

protection set by external resistor. The LED current can be adjusted by an external signal connecting

to the EN pin. EN pin accepts either a DC voltage or a PWM signal. The PWM signal filter components

are contained within the chip.

Features

 Start-up Voltage: 2.5V

 Wide Supply Voltage Operating Range: 4.5V to 24V

 Precision Feedback Reference Voltage: 0.2V (Max.)

 Analog and Digital Dimming Control

 Shutdown Current: 6

μA (Max.)

 Internal Fixed Switching Frequency: 300KHz

 Programmable Soft Start Function (SS)

 Programmable Over Voltage Protection (OVP)

 Over Temperature Protection (OTP)

 Package: SOP-8L(EP)

Applications

 LED Module

 Display Backlight

 Car Lighting

 Portable LED Lighting

Typical Application Circuit

FP7208

OVP

EXT

HVDD

EN

VDS

COMP

FB

GND

SS