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HT7727A(SOT-23)

更新时间： 2024-11-10 19:12:35
品牌 Logo 应用领域
台湾合泰/盛群 - HOLTEK /
页数 文件大小 规格书
17页 371K
描述
Switching Regulator/Controller

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中文翻译

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HT7727A(SOT-23) 技术参数

生命周期：Contact ManufacturerReach Compliance Code：unknown
风险等级：5.77Base Number Matches：1

HT7727A(SOT-23) 数据手册

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HT77XXA  
PFM Step-up DC/DC Converter  
Features  
·
·
Low start-up voltage: 0.7V (Typ.)  
Ultra low supply current IDD: 5mA (Typ.)  
·
·
High efficiency: 85% (Typ.)  
Low ripple and low noise  
·
·
High output voltage accuracy: ±2.5%  
Low shutdown current: 0.5mA (Typ.)  
·
·
Output voltage: 2.7V, 3.0V, 3.3V, 5.0V  
TO92, SOT89, SOT23 and SOT23-5 package  
·
Output current up to 200mA  
Applications  
·
·
Palmtops/PDAs  
Cameras/Camcorders  
·
·
Portable communicators/Smartphones  
Battery-powered equipment  
General Description  
The HT77XXA series is a set of PFM step-up DC/DC  
converter with high efficiency and low ripple. The series  
features extremely low start-up voltage and high output  
voltage accuracy. They require only three external com-  
ponents to provide a fixed output voltage of 2.7V, 3.0V,  
3.3V or 5.0V. CMOS technology ensures ultra low sup-  
ply current and makes them ideal for battery-operated  
applications powered from one or more cells.  
The HT77XXA consists of an oscillator, a PFM control  
circuit, a driver transistor, a reference voltage unit, and a  
high speed comparator. They employ pulse frequency  
modulation (PFM) for minimum supply current and rip-  
ple at light output loading. These devices are available  
in space saving TO92, SOT89, SOT23 and SOT23-5  
packages. For SOT23-5 package, it also build-in a chip  
enable function to reduce power consumption during  
shutdown mode.  
Selection Table  
Part No.  
HT7727A  
HT7730A  
HT7733A  
HT7750A  
Output Voltage  
Package  
Marking  
2.7V  
3.0V  
3.3V  
5.0V  
TO92  
SOT89  
SOT23  
SOT23-5  
HT77XXA (for TO92)  
HT77XXA# (for SOT89)  
7XXA# (for SOT23)  
7XXA# (for SOT23-5)  
Note:  
²XX² stands for output voltages.  
Only lead free devices are available. ²#² stands for lead free devices. For the TO92 package, there will be a ²#²  
mark at the end of the date code.  
Block Diagram  
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Rev 1.30  
1
September 24, 2008  
1234567...17

中文翻译

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