HI-SINCERITY

MICROELECTRONICS CORP.

Spec. No. : Preliminary Data

Issued Date : 1998.08.01

Revised Date : 1999.06.01

Page No. : 1/6

HSMC Product Specification

H34063AP

DC-TO-DC CONVERTER INTEGRATE CIRCUIT DEVICES

Description

The H34063AP Series is a monolithic control circuit containing the

primary functions required for DC-to-DC converters. These devices

consist of an internal temperature compensated reference,

comparator, controlled duty cycle oscillator with an active current

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

specifically by Hi-Sincerity Microelectronics Corp.

Features

• 3V to 40V Input Voltage Operation

• Internal 1.6A Peak Current Switch

• Internal ±1.8% Reference

• Low Quiescent Current at 1.6mA

• Frequency Operation from 100Hz~100KHz

• Current Limiting

Applications

• Saver for Cellular Phone

• DC-DC Converter Module

Typical Application Circuit

1

8

2

3

4

5

6

7

Fig1.Saver Circuit for Cellular Phone

220

µF

D1

H1N5819

470

ρF

RSC

C1

100

µF

RA

5.6k

Ω

RB

33k

Ω

200

µH

L1

H34063AP