TPS54122RHLR

具有集成直流/直流转换器和低噪声 LDO 的 3A QuietSupply™ 稳压器 24-VQFN -40 to 150

The TPS54122 device combines the 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 ultralow-noise power supply that delivers QuietSupply rails to noise-sensitive applications.

The TPS54122 device is ideally suited for systems with 5-V power busses and can support 3-A continuous output current on both the dc-dc or LDO output. The LDO output voltage can be set from 0.8 V to 3.6 V and the dc-dc can be adjusted from 0.83 V to 5.0 V using external resistors. The TPS54122 device 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 device includes features such as soft-start, switching frequency synchronization, and a power-good signal.

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

The TPS54122 device is available in a space-saving, 3.50 mm × 5.50 mm VQFN package, and is specified to operate over a –40°C to +125°C ambient temperature range.