Datasheet > HT7627

HT7627

更新时间： 2024-09-19 22:48:27

品牌	Logo	应用领域
台湾合泰/盛群 - HOLTEK		转换器
页数	文件大小	规格书
6页	77K
描述
PFM Step-up DC/DC Converter & Voltage Detector

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HT7627 数据手册

HT7627

PFM Step-up DC/DC Converter & Voltage Detector

Features

High output voltage accuracy: ±5%

Low current consumption: 14mA with 1.5V input (typ.)

Fixed output voltage: 2.7V

Low ripple and low noise

Low start-up voltage

Built-in 2.1V (typ.) voltage detector

8-pin SOP package

(when the output current is 1mA): 0.95V

Applications

Pager

RF Mouse/Keyboard

General Description

The HT7627 DC/DC converter with built in voltage de-

tector is a high performance CMOS IC, suitable for use

in battery-powered system application with low noise

and low supply current. The HT7627 consists of two ma-

jor parts, one is DC/DC converter and the other is volt-

age detector. The DC/DC converter part consists of

reference voltage source, error amplifier, control transis-

tor, oscillation circuit and output voltage setting resistor.

The voltage detector part consists of a high-precision

and low power consumption standard voltage source, a

comparator, hysteresis circuit and an output driver. As

external parts, a coil, a diode, and a capacitor are avail-

able for obtaining a constant output (2.7V) higher than

the input voltage for the DC/DC converter part.

Block Diagram

Pin Assignment

Rev. 1.00

January 18, 2002

12 3 4 5 6

中文翻译

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