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| 型号： | SP6644EU-L |
| 厂商： | Exar Corporation |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC 3.3V/ADJ 8MSOP |
| 标准包装： | 50 |
| 类型： | 升压（升压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 3.3V，2 V ~ 5.5 V |
| 输入电压： | 0.9 V ~ 3.3 V |
| 电流 - 输出： | 175mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 8-MSOP |
| 其它名称： | 1016-1213-5 |
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SP6644/6645
Single/Dual Alkaline Cell, High Efficiency
Boost DC-DC Regulator
■ 90mA Output Current at 1.3V Input
■ 190mA Output Current at 2.6V Input
■ +2V to +5.5V Output Range
■ 0.88V Guaranteed Start-Up
■ 92% High Efficiency
V B AT 1
B AT T L 0 2
RLIM 3
SHDN 4
SP6644
SP6645
8 Pin MSOP
8 V OUT
7 LX
6 GND
4 FB
■ 1.6 μ A Quiescent Supply Current at V BATT
■ Reverse Battery Protection
■ Internal Synchronous Rectifier
■ 5nA Logic Controlled Shutdown Current
From V BATT
■ Low-Battery Detection Active LOW Output
Now Available in Lead Free Packaging
■ Small 8 Pin MSOP Package
■ No External FETs
■ Flexibility to Optimize Inductor Type
with Programmable Peak Current
Control
DESCRIPTION
The SP6644/6645 devices are high-efficiency, low-power step-up DC-DC converters ideal
for single or dual alkaline cell applications such as pagers, remote controls, pointing devices,
medical monitors, and other low-power portable end products. Designers can control the
SP6644 device with an active LOW shutdown input. The SP6644 device features an active
low output for batteries below +1.0V. The SP6645 device features an active low output for
batteries below +2.0V. Both devices contain a 0.8 ? synchronous rectifier, a 0.5 ?
N-channel MOSFET power switch, an internal voltage reference, circuitry for pulse-
frequency-modulation, and an under voltage comparator. The output voltage for the
SP6644/6645 devices is preset to +3.3V + 4% or can be adjusted from +2V to +5.5V by
manipulating two external resistors
TYPICAL APPLICATION CIRCUIT
22 μ H
0.7A
0.88V to
3.3V Input
47 μ F
V BATT
LX
R LIM
SP6644
SP6645
V OUT
47 μ F
+3.3V OUT
BATTLO
SHDN
GND
FB
Date: 11/30/04
SP6644/6645 High Efficiency Boost Regulator
1
? Copyright 2004 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP6644EU-L/TR | 功能描述:DC/DC 开关控制器 Sngl/Dual Alkaline Cell High Eff DC-DC RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| SP6644TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Single/Dual Alkaline Cell, High Efficiency Boost DC-DC Regulator |
| SP6644UEB | 功能描述:电源管理IC开发工具 Hi-Efficiency Boost DC/DC Regulator RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| SP6645 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP6645EU | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Single/Dual Alkaline Cell, High Efficiency Step-Up DC-DC Converter |
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