The TPS3619-33DGKG4 is a Supervisory Circuit with active-low push-pull output. The supervisory circuit monitors and controls processor activity by providing backup-battery switchover for data retention of CMOS RAM. During power on, /RESET is asserted when the supply voltage (VDD or VBAT) becomes higher than 1.1V. Thereafter, the supply voltage supervisor monitors VDD and keeps /RESET output active as long as VDD remains below the threshold voltage (VIT). An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time starts after VDD has risen above VIT. When the supply voltage drops below VIT, the output becomes active (low) again.
- Backup-battery voltage can exceed VDD
- power-ON reset generator
- Voltage monitor for power-fail or low-battery warning
- Battery freshness seal
- Pin-for-Pin-compatible with MAX819, MAX703 and MAX704
- Manual reset
- 40μA Maximum supply current
- 100nA Maximum battery-supply current
- Green product and no Sb/Br
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