Texas Instruments TPS65273VRHHR, dual-output step-down (buck) switching regulator, 3.5A per channel, 4.5V to 18V input, programmable output 0.68V to 1.95V, 200kHz to 1.6MHz switching frequency, synchronous rectification, 36-VFQFN exposed pad package, -40°C to 85°C operation.
| Parameter | Value |
|---|---|
| Output type | Programmable |
| Mounting | Surface Mount |
| Voltage - input | 4.5V |
| Voltage - output | 1.95V |
| Voltage - output (Min (Fixed)) | 0.68V |
| Output current | 3.5A |
| Frequency - switching | 200kHz ~ 1.6MHz |
| I/O channels | 2 |
| Operating temperature | -40°C~85°C(TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Function | Step-Down |
| Topology | Buck |
| Case | 36-VFQFN Exposed Pad |
| Output configuration | Positive |
| Synchronous rectifier | Yes |
The switching frequency is adjustable from 200 kHz to 1.6 MHz, allowing the designer to trade inductor size against efficiency.
Synchronous rectification is integrated, so no external Schottky diode is needed, saving board area and reducing BOM count.
The TPS65273 base product number may share a pinout with other density variants in the same family — verify the specific output current and voltage range against your BOM requirements.