STMicroelectronics ST1PS02A1QTR, Step-Down Buck Regulator, Adjustable Output, 400 mA, 2 MHz Switching, 1.8 V to 5.5 V Input, 12-TQFN (1.7x2 mm), -40°C to 85°C.
| Parameter | Value |
|---|---|
| Output type | Adjustable |
| Mounting | Surface Mount |
| Voltage - input | 5.5V |
| Voltage - output | 1.75V |
| Voltage - output (Min (Fixed)) | 1.4V |
| Output current | 400mA |
| Frequency | 2MHz |
| I/O channels | 1 |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Function | Step-Down |
| Topology | Buck |
| Case | 12-UFQFN |
| Output configuration | Positive |
| Synchronous rectifier | Yes |
Output is adjustable from 1.4 V to 1.75 V via an external resistor divider.
Housed in a 12-UFQFN (also marked 12-TQFN 1.7x2 mm), this is a tiny QFN with exposed pad — good for thermal transfer but a pain to hand-solder without a hot-air station.
Active status, ROHS3 compliant.
The switching frequency is 2 MHz. This allows small external inductors and capacitors, keeping the total solution footprint compact.
It comes in a 12-UFQFN package, also described as a 12-TQFN measuring 1.7x2 mm. Surface-mount only.