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LM3704

Features: Standard Reset Threshold voltage: 3.08VCustom Reset Threshold voltages: For other voltages between 2.2V and 5.0V in 10mV increments, contact National Semiconductor Corp.No external components requiredManual-Reset inputRESET (LM3704) or RESET (LM3705) outputsPrecision supply voltage monit...

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SeekIC No. : 004395424 Detail

LM3704: Features: Standard Reset Threshold voltage: 3.08VCustom Reset Threshold voltages: For other voltages between 2.2V and 5.0V in 10mV increments, contact National Semiconductor Corp.No external compone...

LM3704 Data Sheet

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Part Number:
LM3704
Supply Ability:
5000

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  • 1~5000
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Product Details

Description



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
Manual-Reset input
RESET (LM3704) or RESET (LM3705) outputs
Precision supply voltage monitor
Factory programmable Reset Timeout Delay
Separate Power Fail comparator
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 A VCC supply current




Application

Embedded Controllers and Processors
Intelligent Instruments
Automotive Systems
Critical P Power Monitoring




Pinout

Connection Diagram




Specifications

Power on Reset Yes
Watchdog No
Power Fail Input Yes
Manual Reset Yes
Reset Timeout Period 200, 1.4 ms
On/Off Pin Yes
Error Flag Yes
Input Min Voltage 1 Volt
Input Max Voltage 5.5 Volt
RegType Supervisor
Temperature Min -40 deg C
Temperature Max 85 deg C
View Using Catalog


Supply Voltage (VCC) ..........................−0.3V to 6.0V
All Other Inputs ........................−0.3V to VCC + 0.3V
ESD Ratings .................................................(Note 2)
Human Body Model...........................................1.5kV
Machine Model...................................................150V
Power Dissipation....................................... (Note 3)






Description

The LM3704/LM3705 series of microprocessor supervisory 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.

Built-in features include the following: Reset: Reset is asserted during power-up, power-down, and brownout conditions. RESET is guaranteed down t o VCC of 1.0V. Manual Reset Input: An input that asserts reset when pulled low.

Power-Fail Input: A 1.225V threshold detector for power fail warning, or to monitor a power supply other than VCC. 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.






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