TPS51221 Datasheet - Texas Instruments

TPS51221 Notebook System Power Controller

The TPS51221 is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51221 supports high efficiency, fast transient response and 99% duty cycle .

TPS51221 Features

* 1

* 2 Input Voltage Range: 4.5 V to 28 V

* Output Voltage Range: 1 V to 12 V

* Selectable Light Load Operation (Continuous / Auto Skip / Out-Of-Audio™ Skip)

* Programmable Droop Compensation

* Voltage Servo Adjustable Soft Start

* 200 kHz to 1 MHz Fixed

TPS51221-etcTI.pdf