Texas Instruments TPS2024IDRG4Q1

Overview

TPS2024IDRG4Q1 from Texas Instruments is an automotive-qualified 3-A high-side power distribution switch with integrated N-channel MOSFET, 33-mΩ on-resistance at 5 V, active-low enable input, and overcurrent/thermal protection. It operates from 2.7 V to 5.5 V and delivers controlled power sequencing in hot-plug USB peripherals and infotainment modules.

For engineers reviewing the TPS2024IDRG4Q1 datasheet, TPS2024IDRG4Q1 pinout, TPS2024IDRG4Q1 application, or TPS2024IDRG4Q1 equivalent, key selection criteria include short-circuit current limit (2–4.2 A), rise time (6.1 ms typical), SOIC-8 thermal performance (172°C/W), and automotive-grade junction temperature range (–40°C to 125°C).

Technical Context

The TPS2024IDRG4Q1 implements a charge-pump–driven N-channel MOSFET high-side switch with internal current-sense FET for precise constant-current limiting during overload. Its driver circuit enforces controlled 2–9 ms rise/fall times to suppress EMI and inrush surges.

Thermal shutdown activates at ~140°C junction temperature with ~20°C hysteresis; undervoltage lockout disables the switch below ~2 V input. The OC open-drain output asserts low during overcurrent or overtemperature events and remains latched until fault removal.

Key Specifications

Pinout & Package

TPS2024IDRG4Q1 is housed in an 8-pin SOIC (D) package with exposed pad for enhanced thermal dissipation. Pin 1 is GND; pins 2 and 3 are parallel IN inputs; pin 4 is EN (active-low); pin 5 is OC (open-drain); pins 6–8 are paralleled OUT terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2024DRQ1, the TPS2024IDRG4Q1 offers identical switching performance but with G4-compliant matte tin plating for enhanced solderability and long-term reliability in automotive reflow cycles; versus TPS2051BQDBVRQ1, it delivers 2× current capacity, integrated OC signaling, and superior thermal management for demanding 3-A applications.

Availability

TPS2024IDRG4Q1 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial I/O modules, and telematics gateway designs requiring stable component supply, AEC-Q100 compliance, and long-lifecycle support.

Supply support for TPS2024IDRG4Q1 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 expertise in power management and high-reliability design.

The TPS202x-Q1 family was engineered specifically for automotive power distribution, emphasizing fault resilience, hot-plug robustness, and seamless integration into ASIL-B–compatible systems.

FAQ

What is the short-circuit current limit of the TPS2024IDRG4Q1?

The TPS2024IDRG4Q1 has a typical short-circuit output current limit of 3 A at 25°C, with a minimum of 2 A and maximum of 4.2 A across operating conditions. This value is specified in the Electrical Characteristics table under IOS (Short-circuit output current) with test condition "OUT connected to GND, device enabled into short circuit." The current limit is enforced via internal sense-FET feedback and holds output current constant while reducing output voltage during overload.

Does the TPS2024IDRG4Q1 require external components for basic operation?

No, the TPS2024IDRG4Q1 operates autonomously with no external gate-drive or timing components. A 0.1-µF ceramic capacitor between IN and GND is recommended for bypassing, and an external pull-up resistor on the OC pin is required for host monitoring. The internal charge pump, current-sense FET, and thermal protection circuits are fully integrated - eliminating discrete MOSFET drivers, current-sense resistors, or thermal shutdown ICs.

How does the OC pin behave during inrush current events?

The OC pin of the TPS2024IDRG4Q1 may assert low momentarily during hot-plug inrush due to transient overcurrent detection. This is not a fault condition but a known response to downstream capacitor charging. To suppress false triggers, TI recommends adding an RC filter (e.g., 10 kΩ + 100 nF) between OC and VCC, or using low-ESR bulk capacitors on the output to reduce peak inrush magnitude seen by the switch.

What is the thermal resistance (θJA) of the TPS2024IDRG4Q1 in its SOIC-8 package?

The TPS2024IDRG4Q1 in the SOIC-8 (D) package has a junction-to-ambient thermal resistance (θJA) of 172°C/W, as specified in the Dissipation Ratings table. This value assumes standard JEDEC 2-layer board conditions. For higher-power applications, thermal relief pads and copper pours under the exposed pad (if present) can reduce effective θJA by up to 30%, improving sustained current capability at elevated ambient temperatures.

Is the TPS2024IDRG4Q1 compatible with 3.3-V logic enable signals?

Yes, the TPS2024IDRG4Q1 EN pin is fully compatible with 3.3-V logic systems. Its VIH (high-level input voltage) threshold is 0.8 V minimum across all operating conditions, and VIL (low-level input voltage) is 0.5 V maximum - ensuring reliable recognition of both 3.3-V and 5-V CMOS/TTL logic levels. When EN is pulled high to 3.3 V, the device enters ultra-low-quiescent mode with <10 µA supply current.