Programmable six-channel power-supply sequencer and voltage supervisor controls enable and disable order with user-defined timing. The device monitors undervoltage and overvoltage thresholds with up to ±0.75% accuracy and supports I2C/SMBus configuration. Integrated EEPROM stores configuration and fault logs for autonomous operation, with retention specified for 20 years and 10,000 write cycles. The device operates from a 2.9 V to 16.5 V supply range depending on connection and is offered in a 28-lead 5 mm × 6 mm plastic QFN package.
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| Sequenced supplies | 6 |
| Programmable UV and OV comparators | 12 |
| Threshold accuracy | ±0.75 typical for C/I grades, codes 55 to 255% |
| VPWR supply input operating range | 4.5 to 16.5V |
| VDD operating range | 2.9 to 5.5V |
| VDD regulated output | 3.3 typicalV |
| VDD undervoltage lockout | 2.7 typicalV |
| Vn monitoring threshold adjustable range | 0.2 to 1.2V |
| Vn monitoring threshold low range | 0.5 to 3V |
| Vn monitoring threshold high range | 1 to 6V |
| Vn threshold programming resolution | 4 adjustable range, 10 low range, 20 high rangemV |
| Vn input resistance | 600 typicalkΩ |
| Vn discharge on resistance | 40 typicalΩ |
| Vn discharge current | 35 typical at 1.8 VmA |
| EEPROM retention | 20years |
| EEPROM endurance | 10000cycles |
| Share clock frequency | 100 typicalkHz |
| Maximum serial clock frequency | 400kHz |
| Operating junction temperature range | 0 to 70, -40 to 85, or -40 to 125 by grade°C |
| Package | 28-lead 5 mm × 6 mm plastic QFN |
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These are design resources that include the Analog Devices LTC2937
A guide for implementing the LTC2937 power supply sequencer and supervisor, covering minimalist circuit design, fault handling, I2C connectivity, and EEPROM programming.
