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HT7727 PDF预览

HT7727

更新时间: 2024-11-08 03:42:59
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
15页 131K
描述
PFM Step-up DC/DC Converter

HT7727 技术参数

生命周期:ActiveReach Compliance Code:compliant
风险等级:5.82模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制技术:PULSE FREQUENCY MODULATION最大输入电压:6 V
标称输入电压:1.62 VJESD-30 代码:R-PDSO-G5
长度:2.9 mm功能数量:1
端子数量:5最高工作温度:85 °C
最低工作温度:-40 °C最大输出电压:2.7675 V
最小输出电压:2.6325 V标称输出电压:2.7 V
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP5,.07,37封装形状:RECTANGULAR
封装形式:SMALL OUTLINE座面最大高度:1.45 mm
最大供电电流 (Isup):0.06 mA表面贴装:YES
切换器配置:BOOST技术:CMOS
温度等级:INDUSTRIAL端子形式:GULL WING
端子节距:0.95 mm端子位置:DUAL
宽度:1.6 mm

HT7727 数据手册

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HT77XX  
PFM Step-up DC/DC Converter  
Technical Document  
·
Tools Information  
·
FAQs  
·
Application Note  
Features  
·
·
Low start-up voltage: 0.6V (Typ.)  
Ultra low supply current IDD2: 4mA (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, 3.7V, 5.0V  
TO-92, SOT-89 and SOT-25 package  
Applications  
·
·
·
Palmtops/PDAs  
Cameras/Camcorders  
·
Portable communicators/Smartphones  
Battery-powered equipment  
General Description  
The HT77XX series is a set of PFM step-up DC/DC con-  
verter with high efficiency and low ripple. The series fea-  
tures 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, 3.7V or 5.0V. CMOS technology ensures ultra low  
supply current and makes them ideal for bat-  
tery-operated applications powered from one or more  
cells.  
The HT77XX consists of an oscillator, a PFM control cir-  
cuit, 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 TO-92, SOT-89 and SOT-25 packages.  
For SOT-25 package, it also build-in a chip enable func-  
tion to reduce power consumption during shutdown  
mode.  
Selection Table  
Part No.  
HT7727  
HT7730  
HT7733  
HT7737  
HT7750  
Output Voltage  
2.7V  
Package  
Marking  
3.0V  
TO-92  
SOT-89  
SOT-25  
HT77XX (for TO-92)  
HT77XX# (for SOT-89)  
77XX# (for SOT-25)  
3.3V  
3.7V  
5.0V  
Note:  
²XX² stands for output voltages.  
Only lead free devices are available. ²#² stands for lead free devices. For the TO-92 package, there will be a  
²#² mark at the end of the date code.  
Rev 1.10  
1
March 7, 2006  

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