SP34063A 查看數據表（PDF） - Unspecified

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SP34063A

1.5A Buck/Boost/Inverting DC-DC Switching Regulator

Unspecified 

PIN DESCRIPTION

Pin

Number

Pin Name

Description

1

Switching Collector Internal switch transistor collector.

2

Switching Emitter Internal switch transistor emitter.

3

Timing Capacitor Timing capacitor to control the switching frequency.

4

GND

Ground pin for all internal circuit.

5

Comparator

Inverting input pin for internal comparator.

Inverting Input

6

VCC

Voltage supply

7

I Sense

Peak Current Sense Input by monitoring the voltage drop across an

PK

external I sense resistor to limit the peak current through the switch.

8

Driver Collector Voltage driver collector

BLOCK DIAGRAM

Driver 8

Collector

I PK 7

Sense

VCC 6

Comparator 5

Inverting

Input

B

A

SQ

R

I PK

CT

OSC

+

-

1.25V

Reference

Regulator

1 Switch

Collector

2 Switch

Emitter

3

Timing

Capacitor

4 GND

Date: 11/29/05

SP34063A 1.5A Buck/Boost/Inverting DC-DC Switching Regulator

4

© Copyright 2005 Sipex Corporation

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