Texas Instruments TPS3618-50DGKR, Battery Backup Circuit, monitors 1 supply, 4.55V threshold, active-low reset, push-pull output, 60ms min reset timeout, -40°C to 85°C, 8-VSSOP package.
| Parameter | Value |
|---|---|
| Type | Battery Backup Circuit |
| Mounting | Surface Mount |
| Voltage - threshold | 4.55V |
| Number of voltages monitored | 1 |
| Operating temperature | -40°C~85°C(TJ) |
| Reset | Active Low |
| Output | Push-Pull, Totem Pole |
| Package | Tape & Reel (TR) |
| Reset timeout | 60ms Minimum |
| Case | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) |
The TPS3618-50DGKR monitors a single supply and switches to a backup battery when the main supply drops below the 4.55 V threshold. The active-low reset output holds the system in reset for a minimum of 60 ms after the supply returns.
This part is obsolete and no longer available from the factory. It can be sourced through independent distribution — submit an RFQ for current availability and pricing.
The two parts differ in their voltage threshold: the -50 variant monitors a 5 V rail at 4.55 V, while the -33 variant monitors a 3.3 V rail. All other specifications — package, reset timeout, output type — are the same.