Datasheet > LM3713XPBPX-308

LM3713XPBPX-308

更新时间： 2024-09-19 10:41:51

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
13页	237K
描述
2-CHANNEL POWER SUPPLY MANAGEMENT CKT, BGA9, MICRO, BUMP, SMD-9

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LM3713XPBPX-308 数据手册

July 2002

LM3712/LM3713

Microprocessor Supervisory Circuits with Separate

Watchdog Timer Output, Power Fail Input and Manual

Reset

General Description

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.

The LM3712/LM3713 series of microprocessor supervisory

circuits provide the maximum flexibility for monitoring power

supplies and battery controlled functions in systems without

backup batteries. The LM3712/LM3713 series are available

in a 9-bump micro SMD package.

n No external components required

n Manual-Reset input

Built-in features include the following:

n RESET (LM3712) or RESET (LM3713) outputs

n Precision supply voltage monitor

n Factory programmable Reset and Watchdog Timeout

Delays

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

brownout conditions. RESET is guaranteed down to V_CCof

1.0V.

Manual Reset Input: An input that asserts reset when pulled

low.

n Separate Watchdog output

n Separate Power Fail comparator

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

warning, or to monitor a power supply other than V_CC

n Available in micro SMD package for minimum footprint

0.5% Reset threshold accuracy at room temperature

2% Reset threshold accuracy over temperature

extremes

Watchdog Timer: The WDI (Watchdog Input) monitors one of

the µP’s output lines for activity. If no output transition occurs

during the watchdog timeout period, the watchdog output

(WDO) pulls low.

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

n 28 µA V_CCsupply current

Applications

n Embedded Controllers and Processors

n Intelligent Instruments

n Automotive Systems

n Critical µP Power Monitoring

Typical Application

20011903

DS200119

www.national.com

12 3 4 5 6 7...13

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