APW7137BI-TRL Ver la hoja de datos (PDF) - Anpec Electronics

Número de pieza

componentes Descripción

Fabricante

APW7137BI-TRL

1MHz, High Efficiency, Step-Up Converter with Internal FET Switch

Anpec Electronics 

APW7137

Pin Description

PIN.

NO

NAME

1

LX

2

GND

3

FB

4

EN

5

VIN

FUNCTION

Switch pin. Connect this pin to inductor/diode here.

Power and signal ground pin.

Feedback Input. The device senses feedback voltage via FB and regulate the voltage at 1.23V.

Connecting FB with a resistor-divider from the output that sets the output voltage in the range from

VIN to 30V.

Enable Control Input. Forcing this pin above 1.0V enables the device. Forcing this pin below 0.4V to

shut it down. In shutdown, all functions are disabled to decrease the supply current below 1µA. Do

not left this pin floating.

Main Supply Pin. Must be closely decoupled to GND with a 2.2µF or greater ceramic capacitor.

Block Diagram

VIN

EN

UVLO

Gate Driver

LX

Control Logic

Over-Temperature

Protection

Slop

Compensation

Current

Limit

Σ

Current Sense

Amplifier

GND

Oscillator

ICMP

COMP

Error

Amplifier

FB

EAMP

VREF

1.23V

Soft-Start

Copyright © ANPEC Electronics Corp.

10

Rev. A.4 - Oct., 2008

www.anpec.com.tw

Share Link: