Texas Instruments TPS2022DRQ1

Overview

TPS2022DRQ1 from Texas Instruments is an automotive-qualified 1.5-A high-side power distribution switch with 33-mΩ on-resistance at 5 V, integrated overcurrent and thermal protection, and logic-level enable input. It operates from 2.7 V to 5.5 V and delivers controlled power sequencing for hot-plug USB peripherals and infotainment modules in automotive ECUs.

For engineers reviewing the TPS2022DRQ1 datasheet, TPS2022DRQ1 pinout, TPS2022DRQ1 application, or TPS2022DRQ1 equivalent, this page provides verified functional specifications, SOIC-8 terminal mapping, automotive-grade reliability context, and validated alternative options for load-switch design.

Technical Context

The TPS2022DRQ1 implements an N-channel MOSFET high-side switch with internal charge pump enabling operation down to 2.7 V input while maintaining gate drive above source potential. Its current-limit threshold is fixed at 1.1–1.8 A (typical 1.5 A at 25°C), and it enters constant-current mode during overload-distinct from TPS2020-Q1 (0.3 A) and TPS2024-Q1 (3 A) in the same family.

Thermal shutdown activates at ~140°C junction temperature with ~20°C hysteresis, and undervoltage lockout disables the switch below ~2 V input. The OC pin provides open-drain active-low fault signaling synchronized to overcurrent or thermal events, with no internal pull-up.

Key Specifications

Pinout & Package

TPS2022DRQ1 is housed in an 8-pin SOIC (D) package with exposed pad for thermal enhancement. Pin numbering follows standard SOIC top-view orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2022DRQ1, TPS2021DRQ1 offers lower current capacity but tighter thermal margin in compact layouts, while TPS2024DRQ1 trades higher conduction loss for greater drive capability-neither is pin-compatible without verifying layout clearance and thermal vias.

Availability

TPS2022DRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, infotainment displays, and telematics gateways requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TPS2022DRQ1 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 leader specializing in analog, embedded processing, and automotive ICs, with decades of automotive qualification expertise and AEC-Q100-compliant manufacturing.

The TPS202x-Q1 family was designed specifically for automotive power distribution-delivering robust, current-limited, thermally protected switching in space-constrained ECUs where reliability under transient and fault conditions is non-negotiable.

FAQ

What is the exact short-circuit current limit of TPS2022DRQ1?

The TPS2022DRQ1 has a guaranteed short-circuit output current limit of 1.1 A minimum to 1.8 A maximum at 25°C, with a typical value of 1.5 A. This threshold remains stable across input voltages from 2.7 V to 5.5 V and is factory-trimmed-not user-adjustable. The TPS2022DRQ1 enters constant-current mode immediately upon exceeding this limit, holding output current steady while reducing output voltage.

Does TPS2022DRQ1 require external components for basic operation?

No, the TPS2022DRQ1 requires only two external 0.1 µF ceramic bypass capacitors-one between IN and GND, and one between OUT and GND-placed close to the device. The internal charge pump eliminates need for bootstrap capacitors, and the OC pin requires only an external pull-up resistor for fault reporting. No current-sense resistors, external FETs, or thermal sensors are needed for standard operation of TPS2022DRQ1.

How does the OC pin behave during thermal shutdown?

During thermal shutdown, the OC pin of TPS2022DRQ1 is actively pulled low (≤0.4 V at 10 mA sink) and remains asserted until both the overtemperature condition clears and the junction cools by ~20°C. Unlike overcurrent events-which release OC immediately upon load removal-thermal recovery includes hysteresis to prevent oscillation near trip point. The OC pin is open-drain and shares identical behavior for both fault types in TPS2022DRQ1.

Can TPS2022DRQ1 be used with 3.3 V microcontroller GPIOs?

Yes, TPS2022DRQ1's EN pin is fully compatible with 3.3 V logic: VIH is specified ≥2 V (min) and VIL ≤0.5 V (max), ensuring reliable turn-on with standard 3.3 V CMOS outputs. When EN is driven high (≥2 V), the TPS2022DRQ1 disables with <10 µA supply current; when pulled low (<0.5 V), it enables fully. No level-shifting circuitry is required for interfacing with 3.3 V MCUs.

What is the maximum continuous power dissipation for TPS2022DRQ1 in SOIC-8?

In SOIC-8 (D) package at TA = 25°C, TPS2022DRQ1 has a maximum continuous power dissipation of 725 mW. At 70°C ambient, this derates to 464 mW (5.8 mW/°C), and at 85°C to 377 mW. For a 1.5 A load at 5 V input, conduction loss is ~75 mW (using 33 mΩ rDS(on)), well within safe operating area-provided PCB layout includes ≥4 thermal vias under the exposed pad and 1-in² copper pour per watt.