DocumentationDatasheet
Reliability Data
Product Selector Card
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Features
- 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
Typical Application
Description
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.
MS-8,SO-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC1726EMS8-2.5#PBF | MSOP | 8 | E | $2.15 | $1.85 |
| LTC1726EMS8-2.5#TRPBF | MSOP | 8 | E | $1.91 | |
| LTC1726EMS8-5#PBF | MSOP | 8 | E | $2.15 | $1.85 |
| LTC1726EMS8-5#TRPBF | MSOP | 8 | E | $1.91 | |
| LTC1726ES8-2.5#PBF | SO | 8 | E | $2.10 | $1.75 |
| LTC1726ES8-2.5#TRPBF | SO | 8 | E | $1.81 | |
| LTC1726ES8-5#PBF | SO | 8 | E | $2.10 | $1.75 |
| LTC1726ES8-5#TRPBF | SO | 8 | E | $1.81 | |
| LTC1726HMS8-5#PBF | MSOP | 8 | H | $3.29 | $2.30 |
| LTC1726HMS8-5#TRPBF | MSOP | 8 | H | $2.36 | |
| LTC1726IS8-2.5#PBF | SO | 8 | I | $2.35 | $2.00 |
| LTC1726IS8-2.5#TRPBF | SO | 8 | I | $2.06 | |
| LTC1726IS8-5#PBF | SO | 8 | I | $2.35 | $2.00 |
| LTC1726IS8-5#TRPBF | SO | 8 | I | $2.06 | |
| LTC1726ES8-2.5#TR | SO | 8 | E | $3.62 | |
| LTC1726ES8-2.5 | SO | 8 | E | $4.20 | $3.50 |
| LTC1726ES8-5 | SO | 8 | E | $4.20 | $3.50 |
| LTC1726EMS8-2.5 | MSOP | 8 | E | $4.30 | $3.70 |
| LTC1726EMS8-5 | MSOP | 8 | E | $4.30 | $3.70 |
| LTC1726IS8-5 | SO | 8 | I | $4.70 | $4.00 |
| LTC1726ES8-5#TR | SO | 8 | E | $3.62 | |
| LTC1726EMS8-2.5#TR | MSOP | 8 | E | $3.82 | |
| LTC1726EMS8-5#TR | MSOP | 8 | E | $3.82 | |
| LTC1726IS8-5#TR | SO | 8 | I | $4.12 | |
| LTC1726IS8-2.5#TR | SO | 8 | I | $4.12 | |
| LTC1726IS8-2.5 | SO | 8 | I | $4.70 | $4.00 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.