Texas Instruments LM3370SDX-4221/NOPB, dual 600 mA step-down buck regulator, fixed 1.8V and 3.3V outputs, 2 MHz switching, synchronous rectifier, 16-WSON (5x4) exposed-pad package, -30°C to 85°C operating temperature.
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting | Surface Mount |
| Voltage - input | 5.5V |
| Voltage - output (Min (Fixed)) | 1.8V, 3.3V |
| Output current | 600mA |
| Frequency - switching | 2MHz |
| I/O channels | 2 |
| Operating temperature | -30°C~85°C(TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Function | Step-Down |
| Topology | Buck |
| Case | 16-WFDFN Exposed Pad |
| Output configuration | Positive |
| Synchronous rectifier | Yes |
Housed in a 16-WFDFN exposed-pad package (supplier device package 16-WSON, 5x4 mm), the part relies on the exposed paddle soldered to a copper land on the PCB to dissipate heat. The 0.50 mm pitch of the WSON package is manageable with a 4-layer board; two-layer designs need careful fan-out of the exposed-pad connection.
The two outputs are fixed at 1.8 V and 3.3 V. There is no adjustable version under this order code — if your design needs a different voltage pair, look at other LM3370 fixed-output variants.