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FP6366-1.7-MAR-2013

FP6366

fitipower integrated technology lnc.

Typical Application Circuit

1.8V

VIN

RUN

GND

FB

SW

10µF

2.5V to 5.5V

10µH

300K

150K

10µF

1

4

3

5

2

68pF

R1

R2

L1

Figure 2. Typical Application Circuit of FP6366

Functional Pin Description

Pin Name

Pin Function

RUN

Enable Pin.

Logic high enables the converter, and logic low forces the device into shutdown mode for reducing

the supply current to less than 1µA.

GND

Ground.

SW

Inductor connection to the drains of the internal power MOSFETs.

VIN

Supply Voltage Input.

Input range from 2.5V to 5.5V.

Bypass with a 10µF capacitor.

FB

Feedback Input.

Block Diagram

EA

Soft

Start

Mode

Control

COMP

Compensation

Enable

Control

Slope Compensation

PWM / PFM

Control Logic

& Current Limit

Logic

Control

and

Driver

Logic

Oscillator

COMP

FB

GND

SW

VIN

1

X

GND

RUN

Figure 3. Block Diagram of FP6366