TPS54120 1 A Power Supply

Texas Instruments' low-noise, 1 A power supply with integrated DC-DC converter and low-dropout regulator

Texas Instruments' TPS54120 combines the high-efficiency of a step-down switching (DC-DC) converter with a high power-supply rejection (PSR), low-noise, low-dropout regulator (LDO) to provide an ultra low-noise power supply that delivers quiet power rails to noise-sensitive applications.

With a wide input range of 4.5 V to 17 V, the TPS54120 is ideally suited for systems with 12 V power busses, and supports a 1 A continuous output current. The output voltage can be set from 0.8 V to 6.0 V using external resistors. The dc-dc converter and LDO are completely configurable, allowing the TPS54120 to be used in a wide range of low-noise applications. TPS54120 Datasheet

Features	Applications
Low-noise output: 17 µVRMS at 100 Hz to 1 MHz Wide input voltage range: 4.5 V to 17 V High efficiency: 72% at 1 A, 12 V input Excellent load/line transient response Synchronizable to external clock: 200 kHz to 1.2 MHz Small package: 3.5 mm × 5.5 mm QFN-24	Telecom infrastructure Pico and Femto base stations Powering sensitive clocking distribution circuits Test and measurement Powering RF components: VCOs, receivers, ADCs Professional audio

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Texas Instruments Part Number	Digi-Key Part Number	Packaging	Voltage - Supply	Package
TPS54120RGYT	296-30358-2-ND	Tape & Reel	2.2 V ~ 17 V	10-VFDFN exposed pad
	296-30358-1-ND	Cut Tape
	296-30358-6-ND	Digi-Reel®

Evaluation Module

Texas Instruments Part Number	Digi-Key Part Number	Description
TPS54120EVM-103	296-30409-ND	Evaluation Module for TPS54120EVM-103