Texas Instruments TPS22922YFPR

Overview

TPS22922YFPR 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 (30 μs at 1.8 V), and integrated 65-Ω quick-output discharge. It operates from 0.9 V to 3.6 V and is used in portable media players to manage power sequencing and prevent inrush current during rail activation.

For engineers reviewing the TPS22922YFPR datasheet, TPS22922YFPR pinout, TPS22922YFPR application, or TPS22922YFPR equivalent, key selection criteria include input voltage range (0.9–3.6 V), ultra-low quiescent current (78 nA typ at 1.8 V), quick-output discharge capability, controlled rise time, and DSBGA YFP package compatibility with space-constrained PCB layouts.

Technical Context

The TPS22922YFPR integrates a single P-channel MOSFET with active-high enable logic and internal slew-rate control to limit dV/dt at VOUT. Its 65-Ω on-chip pulldown resistor ensures rapid output discharge (<100 μs) when disabled, eliminating floating outputs in battery-powered systems.

It supports low-threshold logic inputs (VIH = 0.85 V min), enabling direct interface with 1.2-V, 1.8-V, 2.5-V, or 3.3-V controllers. Thermal performance is characterized for YFP wafer-chip-scale packaging with RθJA = 125.1°C/W and operation across –40°C to +85°C.

Key Specifications

Pinout & Package

TPS22922YFPR uses a 6-pin wafer-chip-scale package (DSBGA, YFP variant) with 0.4-mm pitch, 0.8-mm × 1.2-mm body size, and 0.5-mm height. The package is optimized for minimal PCB footprint and thermal performance in portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22922YFPR, TPS22921YFPR eliminates output discharge but saves cost, while TPS22922BYPFR trades faster turn-on for improved EMI control-enabling precise optimization for load capacitance, noise, and system-level sequencing requirements.

Availability

TPS22922YFPR is available at Aetrix Electronics and suitable for portable media players, cell phones, GPS devices, and peripheral ports requiring stable component supply, long-term lifecycle support, and consistent wafer-chip-scale packaging.

Supply support for TPS22922YFPR 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 and embedded processing technologies, with leadership in power management ICs and precision analog solutions.

The TPS229xx family delivers ultra-low-I_Q load switches for battery-critical portable electronics, emphasizing minimal footprint, controlled turn-on, and integrated discharge to simplify power-domain isolation in space- and energy-constrained designs.

FAQ

What is the maximum continuous current rating for the TPS22922YFPR?

The TPS22922YFPR is rated for 2 A maximum continuous switch current across its operating temperature range (–40°C to +85°C). This rating assumes proper PCB thermal design per the YFP package's RθJA = 125.1°C/W and adequate copper pour under the GND pad. Derating applies above 70°C ambient.

Does the TPS22922YFPR require an external pull-down resistor on the ON pin?

No, the TPS22922YFPR does not require an external pull-down on the ON pin. However, the ON pin must never be left floating - it must be actively driven high or low. Internal circuitry does not provide default state biasing, so system-level logic or a dedicated pull-up/pull-down is required for deterministic startup behavior.

What is the purpose of the 65-Ω internal pulldown resistor in the TPS22922YFPR?

The 65-Ω internal pulldown resistor in the TPS22922YFPR provides quick output discharge (QOD), pulling VOUT to GND within ~100 μs after the ON pin is de-asserted. This prevents the output from floating, avoids back-powering of upstream circuitry, and satisfies USB and SD card hot-unplug voltage decay specifications.

Can the TPS22922YFPR operate with a 1.0-V input supply?

Yes, the TPS22922YFPR supports input voltages as low as 0.9 V. At VIN = 1.0 V, its typical ON-resistance is 116 mΩ, resulting in ~232 mV drop at 2 A. Quiescent current remains ultra-low (120 nA typ), making it viable for single-cell NiMH or low-V_CC subsystems where efficiency and leakage are critical.

How does the TPS22922YFPR differ from the TPS22922BYPFR?

The TPS22922YFPR features a 30-μs typical rise time, while the TPS22922BYPFR has a 200-μs rise time - both share identical quick-output discharge, ON-resistance, and YFP packaging. The slower slew rate of the TPS22922BYPFR reduces EMI and inrush in high-capacitance applications, whereas the TPS22922YFPR prioritizes speed for responsive power gating.