Datasheet > LM3705XCBP-643

LM3705XCBP-643

更新时间： 2024-11-07 04:59:51

品牌	Logo	应用领域
美国国家半导体 - NSC		微处理器监控
页数	文件大小	规格书
17页	313K
描述
Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output and Manual Reset

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LM3705XCBP-643 数据手册

July 2002

LM3704/LM3705

Microprocessor Supervisory Circuits with Power Fail

Input, Low Line Output and Manual Reset

n No external components required

n Manual-Reset input

The LM3704/LM3705 series of microprocessor supervisory

n RESET (LM3704) or RESET (LM3705) outputs

General Description

circuits provide the maximum flexibility for monitoring power

supplies and battery controlled functions in systems without

backup batteries. The LM3704/LM3705 series are available

in MSOP-10 and 9-bump micro SMD packages.

n Precision supply voltage monitor

n Factory programmable Reset Timeout Delay

n Separate Power Fail comparator

n Available in micro SMD package for minimum footprint

Built-in features include the following:

0.5% Reset threshold accuracy at room temperature

2% Reset threshold accuracy over temperature

extremes

Reset: Reset is asserted during power-up, power-down, and

brownout conditions. RESET is guaranteed down to V_CCof

1.0V.

n Reset assertion down to 1V V_CC(RESET option only)

n 28 µA V_CCsupply current

Manual Reset Input: An input that asserts reset when pulled

low.

Power-Fail Input: A 1.225V threshold detector for power fail

Applications

warning, or to monitor a power supply other than V_CC

n Embedded Controllers and Processors

n Intelligent Instruments

Low Line Output: This early power failure warning indicator

goes low when the supply voltage drops to a value which is

2% higher than the reset threshold voltage.

n Automotive Systems

n Critical µP Power Monitoring

Features

n Standard Reset Threshold voltage: 3.08V

n Custom Reset Threshold voltages: For other voltages

between 2.2V and 5.0V in 10mV increments, contact

National Semiconductor Corp.

Typical Application

10136903

DS101369

www.national.com

12 3 4 5 6 7...17

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与LM3705XCBP-643相关器件

型号	品牌	获取价格	描述	数据表
LM3705XCBPX-308	NSC	获取价格	Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output and Manual Rese
LM3705XCBPX-308	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA9, MICRO SMD, BUMP PACKAGE, 9 PIN
LM3705XCBPX-643	NSC	获取价格	Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output and Manual Rese
LM3705XCMM-308	NSC	获取价格	Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output and Manual Rese
LM3705XCMM-643	NSC	获取价格	Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output and Manual Rese
LM3705XCMMX-308	NSC	获取价格	Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output and Manual Rese
LM3705XCMMX-308/NOPB	TI	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10, MSOP-10
LM3705XCMMX-643	NSC	获取价格	Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output and Manual Rese
LM3705XDBP-232	TI	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA9, MICRO SMD, BUMP PACKAGE, 9 PIN
LM3705XDBP-232/NOPB	TI	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA9, MICRO SMD, BUMP PACKAGE, 9 PIN

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