Texas Instruments TPS22922BYFPR

Overview

TPS22922BYFPR from Texas Instruments is a 3.6-V, 2-A P-channel load switch with 14-mΩ typical ON-resistance at 3.6 V input, controlled-slew-rate turn-on (200 μs rise time), and integrated 65-Ω quick-output discharge. It operates from 0.9 V to 3.6 V and delivers ultra-low quiescent current (78 nA typ at 1.8 V), enabling power sequencing in portable media players and GPS devices.

For engineers reviewing the TPS22922BYFPR datasheet, TPS22922BYFPR pinout, TPS22922BYFPR application, or TPS22922BYFPR equivalent, key selection criteria include input voltage range (0.9–3.6 V), controlled slew rate for inrush suppression, quick-output discharge capability, low shutdown current (35 nA typ), and wafer-chip-scale DSBGA package compatibility with space-constrained PCB layouts.

Technical Context

The TPS22922BYFPR integrates a single P-channel MOSFET with active-high enable logic and internal slew-rate control circuitry that limits dV/dt at VOUT to prevent system-level inrush currents. Its 200-μs rise time (at VIN = 1.8 V) is fixed and not adjustable, distinguishing it from the 30-μs variants TPS22921/22.

Unlike TPS22921 (no discharge), the device includes a dedicated 65-Ω on-chip pulldown resistor between VOUT and GND activated during OFF-state, ensuring rapid output discharge without external components. This feature supports clean power-down sequencing in battery-powered peripherals where floating outputs could cause leakage or latch-up.

Key Specifications

Pinout & Package

TPS22922BYFPR uses a 6-pin wafer-chip-scale DSBGA package (YFP variant) with 0.4-mm pitch, 0.8-mm × 1.2-mm body size, and 0.5-mm height. The package is bottom-terminal only, with no exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar load switch applications.

Compared with TPS22922YFPR, the TPS22922BYFPR trades faster switching for superior inrush control; versus TPS22965YFPR, it offers integrated discharge and lower voltage compliance at the cost of headroom and current capacity-making it optimal for compact, battery-sensitive consumer designs.

Availability

TPS22922BYFPR is available at Aetrix Electronics and suitable for portable media players, GPS navigation devices, cell phone peripheral ports, and RF module power control requiring stable component supply across high-mix, low-volume production runs.

Supply support for TPS22922BYFPR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management technologies, with leadership in high-reliability, low-power signal chain solutions.

The TPS229xx family targets ultra-low-power load switching in space-constrained portable electronics, emphasizing minimal quiescent current, integrated discharge, and wafer-level packaging for footprint-sensitive applications.

FAQ

What is the maximum input voltage rating for the TPS22922BYFPR?

The TPS22922BYFPR has an absolute maximum input voltage rating of 4 V, with recommended operating range from 0.9 V to 3.6 V. Exceeding 4 V risks permanent damage per Absolute Maximum Ratings table. Operation above 3.6 V is not characterized and may degrade ON-resistance, thermal performance, or reliability - always maintain VIN ≤ 3.6 V in production designs using TPS22922BYFPR.

Does the TPS22922BYFPR require an external pull-down resistor on the ON pin?

No, the TPS22922BYFPR does not require an external pull-down on the ON pin. Its ON input has internal hysteresis and is designed for direct connection to logic-level GPIOs (1.2 V to 3.3 V). However, TI strongly advises against leaving the ON pin floating - a weak external pull-down (e.g., 100 kΩ to GND) is recommended in systems with uncontrolled power-up sequencing to ensure default OFF state before firmware initialization of TPS22922BYFPR.

How does the quick output discharge function work in the TPS22922BYFPR?

The TPS22922BYFPR integrates a 65-Ω NMOS transistor between VOUT and GND, activated automatically when the ON pin transitions low. This internal pulldown discharges capacitive loads on VOUT rapidly - typically within tens of microseconds - eliminating floating output conditions that could cause leakage, false wakeups, or bus contention. Unlike discrete solutions, no external components are needed, and the 65-Ω value balances discharge speed against static current draw during OFF state in TPS22922BYFPR.

Can the TPS22922BYFPR be used with input voltages below 1.0 V?

No, the TPS22922BYFPR is not specified or guaranteed for operation below 0.9 V input. Electrical characteristics including ON-resistance, quiescent current, and rise time are characterized only from 0.9 V to 3.6 V. At VIN < 0.9 V, the internal P-MOSFET may not fully enhance, leading to unpredictable rON, excessive voltage drop, or failure to turn on - avoid sub-0.9-V use in any design relying on TPS22922BYFPR.

What is the thermal resistance (RθJA) of the TPS22922BYFPR in its YFP package?

The TPS22922BYFPR in the YFP wafer-chip-scale package has a junction-to-ambient thermal resistance (RθJA) of 125.1°C/W, measured under standard JEDEC JESD51-2 conditions (single-layer 1-in² copper pad, no airflow). This value assumes proper PCB layout with thermal vias under the package body. For continuous 2-A operation, ambient temperature must remain ≤65°C to keep junction temperature below 125°C - derate linearly above that ambient per RθJA in actual TPS22922BYFPR implementations.