SP34063A データシートの表示（PDF） - Unspecified

部品番号

コンポーネント説明

メーカー

SP34063A

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

Unspecified 

®

SP34063A

1.5A Buck/Boost/Inverting

DC-DC Switching Regulator

FEATURES

■ Supply Voltage: 3V - 36V

■ Current Limiting

■ Output Switch Current to 1.5A

■ Adjustable Output Voltage

■ Operation frequency up to 110KHz

■ Low Quiescent Current

■ Precision 2% Reference

■ Available in 8 pin NSOIC Package

Switch 1

Collector

Switch 2

Emitter

Timing 3

Capacitor

GND 4

8 PIN NSOIC

8 Driver

Collector

7 IPK Sense

6 VCC

5 Comparator

Inverting Input

Now Available in Lead Free Packaging

APPLICATIONS

■ Battery Charger Circuit

■ NICs/Switches/Hubs

■ ADSL Modems

■ Negative Voltage Power Supply

DESCRIPTION

The SP34063A is a monolithic switching regulator control circuit containing the primary

functions required for DC-DC converters. This device consists of an internal temperature

compensated reference, voltage comparator, controlled duty cycle oscillator with active

current limit circuit, driver and high current output switch. This device was specifically

designed to be used in buck, boost, and Voltage-Inverting applications with a minimum

number of external components. The SP34063A is available in the 8 pin NSOIC package.

L1 150µH

TYPICAL APPLICATION CIRCUIT

R3 180Ω 8

7

RSC

0.22Ω

VIN = 12V

6

+ C1

100µF

5

SP34063A

B

S

A

Q

R

Ipk

OSC CT

+

-

1.25V

Reference

Regulator

R2 2.2kΩ

R1 47kΩ

1

D1

1N5819

2

3

CT

1500 pF

4

VOUT

L2 1.0 µH

28V/175mA

VOUT

+ C2

330 µF

Optional

Filter

+ C3

100 µF

Date: 11/29/05

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

1

© Copyright 2005 Sipex Corporation

Share Link: