LM3704 Datasheet, PDF (1/18 Pages) National Semiconductor (TI) – Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output and Manual Reset

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LM3704
SNVS088F – MAY 2004 – REVISED APRIL 2016
LM3704 Voltage Supervisor With Power-Fail Input,
Low-Line Output and Manual Reset
1 Features
•1 Available Threshold Voltage of 3.08 V and 2.32 V
• No External Components Required
• Manual-Reset Input
• Available in Both Open-Drain and Push-Pull
Configuration
• Reset Time-Out Delay of 200 ms
• Separate Power-Fail Comparator
• ±0.5% Reset Threshold Accuracy at Room
Temperature
• ±2% Reset Threshold Accuracy Over
Temperature
• 28-µA V_CC Supply Current
2 Applications
• Embedded Controllers and Processors
• Intelligent Instruments
• Automotive Systems
• Critical µP Power Monitoring
3 Description
The LM3704 is a feature-rich, easy-to-use voltage
supervisor. It is offered in both push-pull and open-
drain configuration with a tight 2% accuracy over
temperature.
The LM3704 features include a manual reset, low-line
output, and power-fail input detection. The power-fail
input allows for a configurable second rail to be
monitored helping detect upstream failures. The low-
line output is used as a second interrupt line to
indicate a fall in V_CC (1.02 × VRST).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM3704
VSSOP (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
V_IN1
V_CC
Reset
V_IN2
PFI
PFO
MR
LLO
GND
V_CC
Reset
PP
NMI
INT
GND
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.