Texas Instruments TPS2032DG4

Overview

TPS2032DG4 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 overcurrent logic output. 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 active-high enable compatible with 3-V/5-V logic. It is used in USB peripheral power management, hot-plug card slots, and industrial I/O modules where controlled inrush and short-circuit resilience are critical.

For engineers reviewing the TPS2032DG4 datasheet, TPS2032DG4 pinout, TPS2032DG4 application, or TPS2032DG4 equivalent, key selection criteria include its 1.5-A current-limit threshold, SOIC-8 package compatibility, undervoltage lockout (2 V trip), 10 μA standby current, and open-drain OC output for fault reporting - all validated for continuous operation across –40°C to 85°C ambient.

Technical Context

The TPS2032DG4 implements an internal charge pump to drive the N-channel MOSFET gate above the source rail, enabling full enhancement down to 2.7 V input. Its driver circuitry actively controls output rise/fall times (2–9 ms range) to suppress EMI and limit inrush current surges during hot-plug events.

Current limiting is achieved via a sense FET architecture - not external shunt resistors - delivering accurate, low-loss overload detection. Thermal protection triggers at ~140°C junction temperature with ~20°C hysteresis, while undervoltage lockout disables the switch below ~2 V input to ensure safe power-up sequencing.

Key Specifications

Pinout & Package

TPS2032DG4 is housed in an 8-pin SOIC (D) package with standard 1.27 mm pitch and exposed pad not present. Pin functions are electrically validated per TI SLVS190C datasheet revision October 2007.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2032DR, TPS2032DG4 offers identical performance with tube packaging flexibility; versus TPS2051BDBVR, it adds critical OC signaling and thermal recovery - making it the only choice for applications requiring fault visibility and autonomous recovery under overload.

Availability

TPS2032DG4 is available at Aetrix Electronics and suitable for USB power management, industrial I/O protection, and hot-swap backplane applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across manufacturing lots.

Supply support for TPS2032DG4 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 ICs, with decades of expertise in high-reliability power-switching solutions.

The TPS203x family - including TPS2032DG4 - was designed specifically for robust, low-EMI power distribution in hot-plug and high-capacitance-load systems, targeting USB, industrial control, and telecom infrastructure markets.

FAQ

What is the exact current-limit threshold of the TPS2032DG4?

The TPS2032DG4 has a typical short-circuit current limit of 1.5 A at 25°C and 5.5 V input, with a guaranteed minimum of 1.1 A and maximum of 1.8 A across temperature and voltage. This value is factory-trimmed and does not require external components - it is fixed per device variant within the TPS203x family.

Does the TPS2032DG4 support 3.3 V logic enable inputs?

Yes, the TPS2032DG4 EN pin is fully compatible with 3.3 V logic: VIH(min) is 2.0 V at 2.7–4.5 V input, ensuring reliable turn-on with standard 3.3 V CMOS outputs. The enable threshold is internally referenced, eliminating need for external level shifters in mixed-voltage systems.

Can the TPS2032DG4 be used with input voltages below 3 V?

Yes - the TPS2032DG4 operates down to 2.7 V input, supported by its internal charge pump. At 2.7 V, R_DS(on) increases to ~41 mΩ (25°C), and rise time extends to ~8.6 ms, but full functionality including current limiting and OC reporting remains active across the entire 2.7–5.5 V range.

How does the OC pin behave during thermal shutdown?

The OC pin goes low during both overcurrent and thermal shutdown events and remains low until the fault condition is cleared. After thermal recovery (junction cools ~20°C), the switch re-enables automatically and OC returns high - provided no concurrent overcurrent persists. No external reset is needed.

Is the TPS2032DG4 RoHS compliant and lead-free?

Yes, the TPS2032DG4 is RoHS compliant and lead-free per TI's official product change notification (PCN) and material declaration. The "G4" suffix denotes green (halogen-free) packaging and Pb-free terminations, qualified for lead-free reflow soldering per JEDEC J-STD-020.