Boost regulator with a fixed 5 V rail and 2.5 A switch
The Texas Instruments TPS613222ADBVR is a synchronous step-up (boost) DC-DC converter that delivers a fixed 5 V output from input voltages as low as 0.9 V and up to 5.5 V. The integrated switch is rated for 2.5 A. The switching frequency ranges from 500 kHz to 2 MHz.
Synchronous rectification and enable pin — what the datasheet covers
The TPS613222ADBVR includes synchronous rectification, which improves efficiency by replacing the external Schottky diode with an internal low-side FET. The datasheet also documents an enable pin for shutdown control; when pulled low, the converter enters a low-quiescent-current state. For designs that need to sequence power rails or implement power-save modes, the enable pin is a standard feature on this boost family.
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