Texas Instruments TPS2024D

Overview

TPS2024D from Texas Instruments is a 3-A, 50-mΩ N-channel MOSFET high-side power distribution switch designed for hot-plug and heavy capacitive load applications. It operates from 2.7 V to 5.5 V, features active-low logic enable, overcurrent logic output (OC), thermal shutdown at ~140°C, and typical rise time of 6.1 ms - used in USB peripheral power control, industrial I/O modules, and embedded system rail switching.

For engineers reviewing the TPS2024D datasheet, TPS2024D pinout, TPS2024D application, or TPS2024D equivalent, key selection considerations include its 3-A short-circuit current limit (at 25°C), SOIC-8 package, integrated charge pump enabling low-voltage operation down to 2.7 V, undervoltage lockout (~2 V), and open-drain OC fault reporting - all critical for robust power sequencing and fault management in space-constrained designs.

Technical Context

The TPS2024D integrates an N-channel high-side MOSFET with internal charge pump gate drive, eliminating external components while supporting input voltages as low as 2.7 V. Its driver controls output rise/fall times (2–9 ms range) to suppress inrush current and EMI during switching.

Current limiting is implemented via a sense FET (not resistive sensing), enabling constant-current mode at 3 A (typical) under overload or short-circuit conditions. Thermal protection shuts off the switch at ~140°C junction temperature with ~20°C hysteresis, and UVLO disables the switch below ~2 V input to ensure safe power-up and hot-insertion behavior.

Key Specifications

Pinout & Package

TPS2024D is housed in an 8-pin SOIC (D) package with exposed pad (not thermally enhanced per datasheet), footprint compatible with JEDEC MS-012AC. Pin functions are validated per TI SLVS175C datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2024P, the TPS2024D offers superior thermal performance in compact layouts due to SOIC-8's lower θJA (172°C/W vs. 106°C/W is incorrect - correction: SOIC-8 θJA = 172°C/W, PDIP-8 θJA = 106°C/W, so PDIP has better natural convection cooling but larger area; TPS2024D wins in density and reflow compatibility). Compared with TPS2051BDBVR, TPS2024D provides higher current capacity, integrated OC signaling, and thermal recovery - essential for unattended hot-swap systems.

Availability

TPS2024D is available at Aetrix Electronics and suitable for USB peripheral power control, industrial I/O module protection, and embedded system rail sequencing requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS2024D 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 power management technologies, with decades of expertise in high-reliability power IC design.

The TPS202x family was engineered specifically for hot-plug and high-capacitance load switching in computing, industrial, and communications equipment - emphasizing controlled turn-on, fault resilience, and minimal external component count.

FAQ

What is the exact short-circuit current limit of the TPS2024D?

The TPS2024D has a typical short-circuit output current limit of 3 A at 25°C and 5.5 V input, with a minimum of 2.2 A and maximum of 3.8 A across process and temperature. This value is factory-trimmed and specified in the Electrical Characteristics table of the SLVS175C datasheet. The device enters constant-current mode when this threshold is exceeded, maintaining safe power dissipation until fault removal or thermal shutdown.

Does the TPS2024D require external components for basic operation?

No, the TPS2024D requires only two external 0.1-µF ceramic bypass capacitors: one between IN and GND (close to pins 2/3), and another between OUT and GND (close to pins 6–8). The internal charge pump eliminates need for external boost components. An RC filter on the OC pin is optional - used only to suppress false triggers during high-inrush hot-plug events.

Can the TPS2024D be used with a 3.3-V supply?

Yes, the TPS2024D fully supports 3.3-V operation: its input voltage range is 2.7 V to 5.5 V, and its enable input is compatible with 3-V logic. At 3.3 V, the typical rDS(on) is 37 mΩ (25°C), resulting in ~333 mW conduction loss at 3 A - within SOIC-8's 464-mW derated power limit at 70°C ambient.

How does the OC pin behave during thermal shutdown?

The OC pin is asserted low during both overcurrent and overtemperature conditions. It remains low until the fault condition is removed and the device recovers - for thermal events, this means junction temperature must fall ~20°C below the 140°C trip point. The OC signal is open-drain, requiring an external pull-up (typically 10 kΩ to VCC) to interface with microcontroller interrupt inputs.

Is the TPS2024D pin-compatible with other TPS202x variants?

Yes, all TPS202x devices (TPS2020–TPS2024) share identical pinout and package footprints across SOIC-8 and PDIP-8 variants. The only differences are current-limit thresholds and minor parameter shifts (e.g., rDS(on) variation). This allows direct substitution in existing layouts when upgrading or downgrading current capability - provided thermal and layout margins accommodate the new device's dissipation.