LTC1726
Triple Supply Monitor and µP Supervisor with Adjustable Reset and Watchdog Timer
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Overview
Features and Benefits
- Monitors Three Inputs Simultaneously
- LTC1726-5: 5V, 3.3V and ADJ
- LTC1726-2.5: 2.5V, 3.3V and ADJ
- ±1.5% Threshold Accuracy Over Temperature
- Low Supply Current: 16μA Typ
- Adjustable Reset Timeout
- Adjustable Watchdog Timeout
- Active Low Open-Drain Reset Output
- Power Supply Glitch Immunity
- Guaranteed RESET for VCC3 ≥ 1V or VCC25/VCC5 ≥ 1V
- MS8 and SO-8 Packages
Product Details
The LTC1726 is a triple supply monitor and microprocessor supervisory circuit with adjustable reset and watchdog functions intended for systems with multiple supply voltages. The part has a common open-drain reset output with an adjustable delay. The reset and watchdog time-out periods are both adjustable using external capacitors.
Tight 1.5% accuracy specifications and glitch immunity ensure reliable reset operation without false triggering.
The RST output is guaranteed to be in the correct state for VCC5/VCC25 or VCC3 down to 1V. The LTC1726 may also be configured to monitor any one or two VCC inputs instead of three, depending on system requirements.
The low (16μA typical) supply current makes the LTC1726 ideal for power-conscious systems.
Applications- Desktop Computers
- Notebook Computers
- Intelligent Instruments
- Portable Battery-Powered Equipment
- Network Servers
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
LTC1726-2.5
LTC1726-5
Design Resources
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Sample & Buy
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Buy Now Pricing
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List Pricing
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Lead Times
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Sampling
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