FP5209

Non-Synchronous PWM Boost Controller

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Rev. 0.62

1/10

General Description

The FP5209 is a boost topology switching regulator for wide operating voltage applications. It

provides built-in gate driver pin, EXT pin, for driving the external N-MOSFET. The internal

compensation network minimizes external component counts, and the non-inverting input of error

amplifier connects to a 0.6V precision reference voltage. The FP5209 have internal soft start function.

The FP5209 is available in the small footprint SOT23-5L package to fit in space-saving PCB

layout for miscellaneous application fields.

Features

 Wide Supply Voltage Operating Range: 2.4 to 5.5V

 Precision Feedback Reference Voltage: 0.6V (±2%)

 Shutdown Current: <

1μA

 Internal Fixed PWM frequency: 550KHz

 Internal Soft Start Function :7ms (SS)

 Over Voltage Protection

 Package: SOT23-5L

 Duty Cycle: PWM/PFM Switching Control Circuit (15%~90%)

Applications

 Chargers

 LCD Displays

 Digital Cameras

 Handheld Devices

 Portable Products

Typical Application Circuit

FP5209

FB

EXT

EN

2

3

GND

4

5

Vcc

1

ON/OFF