Texas Instruments TPS2033P

Overview

TPS2033P from Texas Instruments is a 2.2-A rated, 50-mΩ N-channel high-side power distribution switch in an 8-pin PDIP package, operating from 2.7 V to 5.5 V with logic-level enable, overcurrent detection (OC pin), and thermal shutdown. It delivers controlled turn-on/turn-off (6.1 ms rise time) for hot-plug USB peripherals and industrial I/O modules.

For engineers reviewing the TPS2033P datasheet, TPS2033P pinout, TPS2033P application, or TPS2033P equivalent, this page provides verified electrical specs, real-world timing behavior under capacitive loads, thermal derating guidance for PDIP packaging, and validated alternative parts for current-limit scalability in embedded power rail management.

Technical Context

The TPS2033P integrates an internal charge pump enabling full gate drive down to 2.7 V input, eliminating external bias components while maintaining precise control of MOSFET rise/fall times (2–9 ms range) to suppress inrush current and EMI. Its current-sense FET architecture avoids series resistance penalties versus shunt-based solutions.

Overcurrent protection operates via constant-current limiting at 2.2 A (typical, 25°C), with active-low OC output signaling fault conditions; thermal shutdown activates at ~140°C junction temperature with ~20°C hysteresis, enabling automatic recovery after cooling. Undervoltage lockout disables switching below ~2 V input.

Key Specifications

Pinout & Package

TPS2033P is housed in an 8-pin plastic dual-in-line (PDIP) package with through-hole mounting and 0.3-inch body width. Pin 1 is GND; pins 2 and 3 are parallel IN inputs; pin 4 is EN; pin 5 is OC; pins 6, 7, and 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 TPS2033P, TPS2033D offers superior board density but reduced thermal performance, while TPS2053P extends current capability without changing footprint - both retain identical enable logic, OC signaling, and UVLO behavior for seamless migration.

Availability

TPS2033P is available at Aetrix Electronics and suitable for USB hot-plug interfaces, industrial I/O protection, embedded power sequencing, and point-of-load enable control requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for TPS2033P 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-switching solutions.

The TPS203x family was designed specifically for robust hot-plug and fault-tolerant power distribution in computing, industrial automation, and communications equipment - emphasizing controlled inrush, integrated protection, and ease of system integration.

FAQ

What is the exact short-circuit current limit of TPS2033P at room temperature?

The TPS2033P has a typical short-circuit output current limit of 2.2 A at 25°C, with a minimum of 1.65 A and maximum of 2.7 A across process and temperature variation. This value is measured with VI(IN) = 5.5 V and the device enabled into a short, per TI SLVS190C datasheet Section 6.5.

Does TPS2033P require external components for basic operation?

No, TPS2033P operates autonomously with only two recommended external components: a 0.1 µF ceramic capacitor between IN and GND (close to the package), and an external pull-up resistor on the OC pin. The internal charge pump eliminates need for boost circuitry, and no gate resistors or sense resistors are required.

Can TPS2033P be used with a 3.3 V supply?

Yes, TPS2033P fully supports 3.3 V operation: its input voltage range is 2.7 V to 5.5 V, and the enable input is compatible with 3.3 V logic levels (VIH ≥ 2 V). At 3.3 V, rDS(on) increases to ~37–41 mΩ (25°C), resulting in ~170 mW conduction loss at 2.2 A - still within safe thermal limits for PDIP packaging.

How does the OC pin behave during thermal shutdown?

The OC pin asserts low during both overcurrent and overtemperature conditions. For TPS2033P, it remains low throughout thermal shutdown and automatic recovery cycles, deasserting only after the fault is removed *and* junction temperature falls below the hysteresis threshold (~120°C). This provides unambiguous fault signaling to the host controller.

Is TPS2033P pin-compatible with other devices in the TPS203x family?

Yes, all TPS203x variants - including TPS2030P, TPS2031P, TPS2032P, TPS2033P, and TPS2034P - share identical 8-pin PDIP pinout and functional assignment. Only the current-limit threshold differs; no PCB changes are needed when upgrading or downgrading within the family for design flexibility.