SC251: Step-down DC-DC Converter With Bias LDO For WCDMA Amplifiers | Semtech

The SC251 is a synchronous Step-down converter designed for use as an adaptive voltage supply for WCDMA RF power ampli, ers (PAs). An Analog control input is used to adjust the output voltage dynamically between 0.5V and 3.4V using a non-linear transfer function. The non-linear relationship maximizes total system ef, ciency by providing the PA with the minimum voltage it needs to maintain linearity. For output voltages greater than 3.4V the input is connected directly to the output via an internal PMOS Switch An optional Gate drive (GD) output to control an external low on-resistance PMOS Switch is also provided for systems applications that require minimal voltage drop. The SC251 also provides a 2.85V LDO reference output that CAN be used to supply a PA bias input. By Semtech Corporation
Part Manufacturer Description Datasheet Samples
TSC251G2DXXX-24CE Microchip Technology Inc Microcontroller, 16-Bit, MROM, 24MHz, PQFP44
TSC251G1DXXX-L16CE Microchip Technology Inc Microcontroller, 16-Bit, MROM, 16MHz, PQFP44
TSC251G2DXXX-L16CE Microchip Technology Inc Microcontroller, 16-Bit, MROM, 16MHz, PQFP44
TSC251G2DDML-24CBR Microchip Technology Inc Microcontroller, 16-Bit, MROM, 24MHz, PQCC44
TSC251G1DXXX-24CE Microchip Technology Inc Microcontroller, 16-Bit, MROM, 24MHz, PQFP44
SC251 's PackagesSC251 's pdf datasheet
SC251MLTRT




SC251 Pinout, Pinouts
SC251 pinout,Pin out
This is one package pinout of SC251,If you need more pinouts please download SC251's pdf datasheet.

SC251 Application circuits
SC251 circuits
This is one application circuit of SC251,If you need more circuits,please download SC251's pdf datasheet.


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