H1563S Просмотр технического описания (PDF) - Hi-Sincerity Microelectronics

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H1563S

HIGH-EFFICIENCY DC/DC CONVERTER

Hi-Sincerity Microelectronics 

HI-SINCERITY

MICROELECTRONICS CORP.

Spec. No. : HP200201

HS200207

Issued Date : 2000.10.01

Revised Date : 2002.07.12

Page No. : 1/8

H1563P / H1563S

HIGH-EFFICIENCY DC/DC CONVERTER

Description

The H1563 is a monolithic control circuit containing the primary functions required for DC to DC converters

and highside-sensed constant current source. The device consists of an internal temperature compensa-

ted reference, comparator, controlled duty cycle oscillator with an active current sense circuit, bootstrap-

ped driver, and high current output switch. This device is specifically designed to construct a constant

current source for battery chargers with a minimum number of external components. Bootstrapped driver

can drive the NPN output switch to saturation for higher eff-iciency and less heat dissipation. The H1563

can deliver 1.5A continuous current without requiring a heat sink.

Features

• 3V to 40V Input Voltage Operation

• Internal 2A Peak Current Switch

• 1.5A Continuous Output Current

• Bootstrapped Driver

• High Side Current Sense Capability

• High Efficiency (up to 90%)

• Internal ±2% Reference

• Low Quiescent Current at 1.6mA

• Frequency Operation from 100Hz to 100KHz

Applications

• Constant Current Source for Battery Chargers

• Saver for Cellular Phone

• Step-Down DC-DC Converter Module

Typical Application Circuit

Saver Circuit for Cellular Phone

R1

1K

D2

R2

C3

120

1uF

H1N4148

Vin

+

C1

220uF

CT

470pF

SC BST

SE

IS

TC VCC

GND FB

H1563

L

220uH

D1

H1N5821

D3

H1N5819

+ Co

220uF

*RS

Io

C5 +

10uF

RB

33K

RA

5.6K

*Io=300mV/RS

H1563P / H1563S

HSMC Product Specification

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