描述 Description

General Description
The LM3700/LM3701 series of microprocessor supervisory circuits provide the maximum flexibility for monitoring power supplies and battery controlled functions in systems without backup batteries. The LM3700/LM3701 series are available in a 9-bump micro SMD package.
Built-in features include the following:
Reset: Reset is asserted during power-up, power-down, and brownout conditions. RESET is guaranteed down to VCC of 1.0V.
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.

特性 Features

■ Standard Reset Threshold voltage: 3.08V
■ Custom Reset Threshold voltages: For other voltages
?? between 2.2V and 5.0V in 10mV increments, contact
?? National Semiconductor Corp.
■ No external components required
■ RESET (LM3700) or RESET (LM3701) outputs
■ Precision supply voltage monitor
■ Factory programmable Reset Timeout Delay
■ Available in micro SMD package for minimum footprint
■ ±0.5% Reset threshold accuracy at room temperature
■ ±2% Reset threshold accuracy over temperature
?? extremes
■ Reset assertion down to 1V VCC (RESET option only)
■ 28 μA VCC supply currentApplications
■ Embedded Controllers and Processors
■ Intelligent Instruments
■ Automotive Systems
■ Critical μP Power Monitoring

應(yīng)用 Application

■ Embedded Controllers and Processors
■ Intelligent Instruments
■ Automotive Systems
■ Critical μP Power Monitoring