LTC1326 - Micropower Precision Triple Supply Monitor
Datasheet 
DocumentationDatasheet
Reliability Data
Product Selector Card
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Features
- Simultaneously Monitors Three Supplies
LTC1326: 5V, 3.3V and ADJ
LTC1326-2.5: 2.5V, 3.3V and ADJ - Guaranteed Threshold Accuracy: ±0.75%
- Low Supply Current: 20µA
- Internal Reset Time Delay: 200ms
- Manual Push-Button Reset Input
- Active Low and Active High Reset Outputs
- Active Low “Soft” Reset Output
- Power Supply Glitch Immunity
- Guaranteed RESET for VCC3 >/= 1V or
VCC5 >/= 1V or VCC25 >/= 1V - 8-Pin SO and MSOP Packages
Typical Application
Description
The LTC1326/LTC1326-2.5 are triple supply monitors intended for systems with multiple supply voltages. They provide micropower operation, small size and high accuracy supply monitoring. Tight 0.75% threshold accuracy and glitch immunity ensure reliable reset operation without false triggering. The 20µA typical supply current makes the LTC1326/LTC1326-2.5 ideal for power-conscious systems. The RST output is guaranteed to be in the correct state for VCC3, VCC5 or VCC25 down to 1V. The LTC1326/LTC1326-2.5 can be configured to monitor one, two or three inputs, depending on system requirements. A manual push-button reset input provides the ability to generate a very narrow “soft” reset pulse (100µs typ) or a 200ms reset pulse equivalent to a power-on reset. Both SRST and RST outputs are open-drain and can be OR-tied with other reset sources.MS-8,SO-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC1326CMS8#PBF | MSOP | 8 | C | $2.85 | $2.30 |
| LTC1326CMS8#TRPBF | MSOP | 8 | C | $2.36 | |
| LTC1326CMS8-2.5#PBF | MSOP | 8 | C | $2.85 | $2.30 |
| LTC1326CMS8-2.5#TRPBF | MSOP | 8 | C | $2.36 | |
| LTC1326CS8#PBF | SO | 8 | C | $2.70 | $2.20 |
| LTC1326CS8#TRPBF | SO | 8 | C | $2.26 | |
| LTC1326CS8-2.5#PBF | SO | 8 | C | $2.70 | $2.20 |
| LTC1326CS8-2.5#TRPBF | SO | 8 | C | $2.26 | |
| LTC1326IMS8#PBF | MSOP | 8 | I | $3.85 | $3.05 |
| LTC1326IMS8#TRPBF | MSOP | 8 | I | $3.11 | |
| LTC1326IMS8-2.5#PBF | MSOP | 8 | I | $3.85 | $3.05 |
| LTC1326IMS8-2.5#TRPBF | MSOP | 8 | I | $3.11 | |
| LTC1326IS8#PBF | SO | 8 | I | $3.60 | $2.95 |
| LTC1326IS8#TRPBF | SO | 8 | I | $3.01 | |
| LTC1326IS8-2.5#PBF | SO | 8 | I | $3.60 | $2.95 |
| LTC1326IS8-2.5#TRPBF | SO | 8 | I | $3.01 | |
| LTC1326CMS8 | MSOP | 8 | C | $5.70 | $4.60 |
| LTC1326CMS8#TR | MSOP | 8 | C | $4.72 | |
| LTC1326CMS8-2.5 | MSOP | 8 | C | $5.70 | $4.60 |
| LTC1326CMS8-2.5#TR | MSOP | 8 | C | $4.72 | |
| LTC1326CS8 | SO | 8 | C | $5.40 | $4.40 |
| LTC1326CS8#TR | SO | 8 | C | $4.52 | |
| LTC1326CS8-2.5 | SO | 8 | C | $5.40 | $4.40 |
| LTC1326CS8-2.5#TR | SO | 8 | C | $4.52 | |
| LTC1326IS8 | SO | 8 | I | $7.20 | $5.90 |
| LTC1326IS8#TR | SO | 8 | I | $6.02 | |
| LTC1326IS8-2.5 | SO | 8 | I | $7.20 | $5.90 |
| LTC1326IS8-2.5#TR | SO | 8 | I | $6.02 | |
| LTC1326IMS8 | MSOP | 8 | I | $7.70 | $6.10 |
| LTC1326IMS8#TR | MSOP | 8 | I | $6.22 | |
| LTC1326IMS8-2.5 | MSOP | 8 | I | $7.70 | $6.10 |
| LTC1326IMS8-2.5#TR | MSOP | 8 | I | $6.22 |
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.