Datasheet > SP6644_05

SP6644_05

更新时间： 2024-11-09 12:47:03

品牌	Logo	应用领域
西伯斯 - SIPEX		稳压器电池
页数	文件大小	规格书
15页	215K
描述
Single/Dual Alkaline Cell, High Efficiency Boost DC-DC Regulator

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中文翻译

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数据手册

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SP6644_05 数据手册

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_OUT

BAT

SP6644

SP6645

BATTL0

GND

LIM

8 Pin MSOP

SHDN

■ 1.6µA Quiescent Supply Current at V_BATT

■ Reverse Battery Protection

■ Internal Synchronous Rectifier

■ 5nA Logic Controlled Shutdown Current

From V_BATT

Now Available in Lead Free Packaging

■ Small 8 Pin MSOP Package

■ No External FETs

■ Flexibility to Optimize Inductor Type

with Programmable Peak Current

Control

■ Low-Battery Detection Active LOW Output

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 0.8Ω synchronous rectifier, a 0.5Ω

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

22µH

0.7A

0.88V to

3.3V Input

BATT

47µF

OUT

RLIM

+3.3VOUT

SP6644

SP6645

47µF

BATTLO

SHDN

GND

Date: 11/30/04

SP6644/6645 High Efficiency Boost Regulator

12 3 4 5 6 7...15

中文翻译

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与SP6644_05相关器件

型号	品牌	获取价格	描述	数据表
SP6644EB	SIPEX	获取价格	Evaluation Board Manual
SP6644EU	SIPEX	获取价格	Single/Dual Alkaline Cell, High Efficiency Boost DC-DC Regulator
SP6644EU/TR	SIPEX	获取价格	Switching Regulator, 1A, PDSO8, MO-187AA, MSOP-8
SP6644EU-L	SIPEX	获取价格	Switching Regulator, Current-mode, 1A, PDSO8, LEAD FREE, MO-187AA, MSOP-8
SP6644EU-L/TR	SIPEX	获取价格	Switching Regulator, 1A, PDSO8, LEAD FREE, MO-187AA, MSOP-8
SP6644TR	SIPEX	获取价格	Single/Dual Alkaline Cell, High Efficiency Boost DC-DC Regulator
SP6644UEB	SIPEX	获取价格	Evaluation Board Manual
SP6645	SIPEX	获取价格	Single/Dual Alkaline Cell, High Efficiency Boost DC-DC Regulator
SP6645EU	SIPEX	获取价格	Single/Dual Alkaline Cell, High Efficiency Boost DC-DC Regulator
SP6645EU/TR	SIPEX	获取价格	Switching Regulator, 1A, PDSO8, MO-187AA, MSOP-8