35 mOhm P-channel load switch in 0.88 mm DSBGA
The TPS22930AYZVR is a single-channel, high-side P-channel load switch from Texas Instruments, part of the TPS22930 family. It handles a continuous output current up to 2 A with a typical on-resistance of 35 mOhm, making it a low-loss path for power rail gating in battery-powered or space-constrained designs. The input voltage range spans 1.4 V to 5.5 V, covering common logic and battery rails from 1.8 V through 5 V. No external Vcc supply is needed — the switch is self-powered from the load voltage.
Slew-rate control and fault protection
The slew-rate controlled turn-on limits inrush current into capacitive loads, preventing upstream supply droop during power-up. This is a key feature when the switch feeds a bank of decoupling capacitors on a sensor or RF module. Built-in fault protection includes reverse current blocking (the switch disconnects when Vout exceeds Vin) and undervoltage lockout (UVLO) that holds the output off until the input rail is stable. These protections reduce external component count in a power sequencing chain. The On/Off interface is non-inverting — a logic high on the enable pin turns the switch on.
DSBGA footprint and board integration
The part comes in a 4-bump DSBGA (0.88 x 0.88 mm) package — a 0.4 mm pitch wafer-level chip-scale package. The small footprint saves board area but requires a solder-mask-defined pad layout and a controlled reflow profile. The package is surface-mount only; no through-hole alternative exists in this family.
The base product number is TPS22930; the suffix AYZVR denotes the 4-DSBGA package and tape-and-reel packaging. Cut tape options are also available for prototyping.