Texas Instruments TPS2032D

Overview

TPS2032D from Texas Instruments is a 1.5-A rated, 8-pin SOIC N-channel high-side power distribution switch with integrated current limiting, thermal shutdown, and undervoltage lockout. It operates from 2.7 V to 5.5 V input, features 33 mΩ typical r_DS(on) at 5 V/25°C, 6.1 ms typical rise time, and delivers overcurrent logic signaling via open-drain OC pin - used in USB peripheral power control, hot-swap modules, and industrial I/O protection.

For engineers reviewing the TPS2032D datasheet, TPS2032D pinout, TPS2032D application, or TPS2032D equivalent, key selection criteria include short-circuit current threshold (1.5 A), SOIC-8 thermal performance (172°C/W θ_JA), enable compatibility with 3-V/5-V logic, absence of back-gate diode, and UL listing (E169910).

Technical Context

The TPS2032D implements an internal charge pump to drive the N-channel MOSFET gate above source potential, enabling full enhancement down to 2.7 V input without external components. Its driver circuit actively controls output rise/fall times (2–9 ms range) to suppress inrush current and EMI during switching.

Current limiting uses a sense FET architecture - not a shunt resistor - minimizing conduction loss while delivering precise 1.5-A trip threshold at 25°C. Thermal protection engages at ~140°C junction temperature with ~20°C hysteresis, and UVLO disables the switch below ~2 V input to ensure safe power-up sequencing.

Key Specifications

Pinout & Package

TPS2032D is housed in an 8-pin SOIC (D) package with standard 1.27-mm pitch, JEDEC MS-012AC compliant footprint, and exposed pad not present. Pin functions are validated per TI SLVS190C datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2032P and TPS2051BDBVR, the TPS2032D uniquely combines SOIC-8 manufacturability, UL recognition, and active fault reporting - making it optimal for certified industrial and computing power-distribution designs where reliability and diagnostics are mandatory.

Availability

TPS2032D is available at Aetrix Electronics and suitable for USB peripheral control, industrial I/O protection, and hot-swap backplane applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS2032D 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 industrial-grade reliability validation.

The TPS203x family was designed specifically for robust power distribution in hot-plug, USB, and modular system architectures - emphasizing fault resilience, low quiescent current, and seamless integration with 3-V/5-V logic controllers.

FAQ

What is the exact short-circuit current limit of the TPS2032D?

The TPS2032D has a typical short-circuit output current limit of 1.5 A at 25°C and V_IN = 5.5 V, with a specified range of 1.1 A (min) to 1.8 A (max). This threshold is factory-trimmed and remains stable across temperature and input voltage variations per TI SLVS190C datasheet Figure 31–33. The TPS2032D enters constant-current mode when this limit is exceeded, maintaining safe power dissipation.

Does the TPS2032D require external components for basic operation?

Yes - the TPS2032D requires a 0.01–0.1-μF ceramic bypass capacitor between IN and GND, placed close to the device. An external pull-up resistor (e.g., 10 kΩ) on the OC pin is also necessary for fault detection. No external gate-drive components are needed due to its integrated charge pump, and no current-sense resistor is required thanks to the internal sense FET architecture.

Can the TPS2032D be used in 3.3-V systems?

Yes - the TPS2032D is fully specified for 2.7 V to 5.5 V operation. At 3.3 V input, its typical r_DS(on) is 37 mΩ (25°C), and rise time increases to ~8.6 ms. The EN pin remains compatible with 3.3-V logic levels (VIH ≥ 2.0 V), and all protection features - including UVLO, thermal shutdown, and current limiting - remain fully functional across the entire input range.

How does the OC pin behave during a short-circuit event?

During a short-circuit or overtemperature event, the OC pin is actively pulled low (V_OL ≤ 0.4 V at I_O = 10 mA) as an open-drain output. It remains low until the fault condition is removed and the device recovers - either thermally (after cooling ~20°C) or electrically (once load current drops below threshold). The OC signal can directly interface with microcontroller GPIO interrupts without level-shifting.

Is the TPS2032D RoHS-compliant and lead-free?

Yes - the TPS2032D is manufactured in TI's RoHS-compliant, lead-free SOIC-8 package (D suffix), meeting JEDEC J-STD-020 moisture sensitivity level 3 and IPC/JEDEC J-STD-033 handling requirements. Full compliance documentation, including material declarations and test reports, is available via TI's Quality & Environmental page for orderable part TPS2032DR.