TPS54122RHLR Dual-Output 3-A Quiet Supply with Integrated DC-DC Converter and Low-Noise LDO VQFN24 spot stock

Product Descriptions

The TPS54122 combines the efficiency of  a stepdown switching (dc-dc) converter with a high powersupply  rejection  (PSR),    low-noise,    low-dropout regulator (LDO) to provide an ultralow-noise power supply that  delivers Quiet  Supply rails to noisesensitive applications.

With a wide input  range of  2.9 V to 5.5 V,  the TPS54122 is ideally suited for  systems with 5-V power busses, and supports a 3-A continuous output current. The output voltage can be set from 0.8 V to3.6 V using external resistors. The TPS54122 can be used in a wide range of  low-noise applications because the dc-dc converter and LDO are completely configurable.   In addition,  the TPS54122 includes features such as soft-start,   switching frequency synchronization, and a power-good signal. 

The TPS54122 can also be configured as a dual supply rail device, supplying a total of 3 A. 

The TPS54122 is available in a space-saving,3,5-mm × 5,5-mm QFN package, and is specified to operate over a –40°C to +125°C junction temperature range.

Product Features

•   Low-Noise Output: 17 µVRMS at 10 Hz to 1 MHz

•   Provides Two Configurable Supply Rails

•   Wide Input Voltage Range: 2.95 V to 5.5 V

•   Output Voltage Adjustable from 0.8 V to 3.6 V

•   1% Overall Accuracy

•   Excellent Load and Line Transient Response

•   Sync to External Clock: 300 kHz to 2 MHz

•   Small Package: 3,5-mm × 5,5-mm QFN-24

Product Applications

•   Telecom Infrastructure

•   Pico and Femto Base Stations

•   Powering Sensitive Clocking-Distribution Circuits

•   Test and Measurement

•   Powering RF Components: VCOs, Receivers, ADCs

•   Professional Audio

Product Specification

Product Photos

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