Texas Instruments
Texas Instruments TPS63021DSJR, Buck-Boost Switching Regulator, Fixed 3.3V Output, 3.5A Switch, 2.4MHz, 14-VSON (4x3) Package, -40°C to 85°C.
MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T
| Parameter / Attribute | Specification / Value |
|---|---|
| Output type | Fixed |
| Mounting | Surface Mount |
| Voltage - input | 5.5V |
| Voltage - output (Min (Fixed)) | 3.3V |
| Output current | 3.5A (Switch) |
| Frequency - switching | 2.4MHz |
| I/O channels | 1 |
| Operating temperature | -40°C~85°C(TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Function | Step-Up/Step-Down |
| Topology | Buck-Boost |
| Case | 14-VFDFN Exposed Pad |
| Output configuration | Positive |
| Synchronous rectifier | Yes |
The TPS63021DSJR is a buck-boost switching regulator from Texas Instruments that delivers a fixed 3.3V output from an input range spanning 1.8V to 5.5V.
At 3.3V output, expect around 2A continuous from a 3.7V Li-ion cell, derated by efficiency and input voltage. The 2.4MHz switching frequency lets you use a small inductor (typically 1 µH to 2.2 µH) and low-ESR ceramic capacitors, keeping the total solution footprint compact.
