Analog Devices LTC1148LCS-3.3#PBF, Step-Down Buck Controller, 1 Output, Transistor Driver, 3.5V to 20V Supply, Up to 250kHz, 14-SOIC, 0°C to 70°C.
| Parameter | Value |
|---|---|
| Output type | Transistor Driver |
| Mounting | Surface Mount |
| Voltage - supply (Vcc (Vdd)) | 3.5V ~ 20V |
| Frequency - switching | Up to 250kHz |
| I/O channels | 1 |
| Output phases | 1 |
| Duty cycle | 100% |
| Operating temperature | 0°C ~ 70°C (TA) |
| Package | Tube |
| Function | Step-Down |
| Topology | Buck |
| Clock sync | No |
| Case | 14-SOIC (0.154\", 3.90mm Width) |
| Control features | Current Limit, Enable |
| Output configuration | Positive |
| Synchronous rectifier | Yes |
Housed in a 14-lead SOIC with 3.90 mm body width, surface-mount. Supplied in tube — if your pick-and-place line prefers tape, confirm the reel option at quote time.
For dual-source planning, the closest functional peer is the LTC1148CS#PBF: same buck controller, same 14-SOIC package, same 0°C to 70°C temperature grade, same synchronous rectification and 250 kHz switching ceiling. The LTC1148CS#PBF is a validated second source for the same BOM footprint.
Yes — it includes a synchronous rectifier driver, which actively drives the low-side N-channel MOSFET for higher efficiency compared to a diode-based freewheeling path.
The switching frequency is rated up to 250 kHz. This is a moderate frequency that allows simpler layout and larger passive components.