TPS3617 Overview
The TPS3617 and TPS3618 are battery-backup supervisors that monitor 5 V supplies. They provide a battery-backup function ideal for applications that require data retention of CMOS RAM during fault conditions. When the voltage at VDD drops below a preset threshold (VIT), the active low push-pull RESET output asserts, and VOUT switches from VDD to VBAT.
TPS3617 Key Features
- Supply Current of 40 µA (Max)
- Battery Supply Current of 100 nA (Max)
- Precision 5-V Supply Voltage Monitor, Other
- Backup-Battery Voltage Can Exceed VDD
- Watchdog Timer With 800-ms Time-Out
- Power-On Reset Generator With Fixed 100-ms
- Voltage Monitor for Power-Fail or Low-Battery Monitoring
- Battery Freshness Seal (TPS3617 Only)
- 8-Pin MSOP Package
- Temperature Range: -40° to +85°C