Datasheet > LM3707XTBPX-308

LM3707XTBPX-308

更新时间： 2024-11-08 07:50:55

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
12页	200K
描述
1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA9, MICRO, SMD-9

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LM3707XTBPX-308 数据手册

June 2001

LM3706/LM3707

Microprocessor Supervisory Circuits with Low Line

Output and Watchdog Timer

n No external components required

n RESET (LM3706) or RESET (LM3707) outputs

n Precision supply voltage monitor

n Factory programmable Reset and Watchdog Timeout

Delays

n Available in micro SMD package for minimum footprint

General Description

The LM3706/LM3707 series of microprocessor supervisory

circuits provide the maximum flexibility for monitoring power

supplies and battery controlled functions in systems without

backup batteries. The LM3706/LM3707 series are available

in a 9-bump micro SMD package.

0.5% Reset threshold accuracy at room temperature

2% Reset threshold accuracy over temperature

Built-in features include the following:

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

brownout conditions. RESET is guaranteed down to V_CCof

1.0V.

extremes

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

n 28 µA V_CCsupply current

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.

Applications

n Embedded Controllers and Processors

n Intelligent Instruments

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, reset is activated.

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

20011603

DS200116

www.national.com

12 3 4 5 6 7...12

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