Texas Instruments TPS76833QPWP

Overview

TPS76833QPWP from Texas Instruments is a 3.3-V fixed-output, 1-A low-dropout (LDO) voltage regulator in a 20-pin HTSSOP package, featuring 230 mV typical dropout at 1 A, ±2% output accuracy over temperature and load, and ultralow 85 µA quiescent current. It delivers stable power to microcontrollers, FPGAs, and DSPs in battery-powered industrial and automotive systems.

For engineers reviewing the TPS76833QPWP datasheet, TPS76833QPWP pinout, TPS76833QPWP application, or TPS76833QPWP equivalent, key selection criteria include dropout voltage under full load, power-good assertion threshold, thermal performance in PWP package, and compatibility with 10-µF ceramic output capacitors.

Technical Context

The TPS76833QPWP uses a PMOS pass transistor architecture enabling low, load-independent quiescent current and minimal dropout voltage proportional to output current. Its internal reference is 1.1834 V, and feedback is internally connected for fixed-output variants-no external resistor divider required.

It integrates open-drain power-good (PG) monitoring with 92–98% VO trip threshold and hysteresis, thermal shutdown at 150°C, and current limiting at 1.2–2 A. The device operates stably with 10 µF output capacitance (ESR 60 mΩ–1.5 Ω) and requires no minimum load.

Key Specifications

Pinout & Package

TPS76833QPWP is housed in a thermally enhanced 20-pin HTSSOP (PWP) package with exposed thermal pad (GND/HSINK pins). The package supports 4.1 W power dissipation with 250 CFM airflow and features 6 ground/heat-sink terminals for improved thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TPS76833QDR and MCP1826-3302E/DB, the TPS76833QPWP offers superior thermal performance (4.1 W vs. 0.57 W), integrated PG signaling, and lower dropout-making it optimal for 1-A industrial and automotive applications requiring robust power sequencing and thermal margin.

Availability

TPS76833QPWP is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control units, portable medical monitors, and test & measurement data loggers requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned reliability.

Supply support for TPS76833QPWP 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 automotive and industrial qualification expertise.

The TPS768xxQ family was designed specifically for high-reliability, wide-temperature industrial and automotive applications demanding low dropout, precise output accuracy, and integrated power monitoring-without sacrificing quiescent current efficiency.

FAQ

What is the maximum continuous output current of the TPS76833QPWP?

The TPS76833QPWP is rated for 1 A continuous output current across –40°C to +125°C junction temperature. Internal current limiting activates at approximately 1.7 A, but sustained operation above 1 A is not recommended due to thermal constraints in the PWP package-even with airflow. Derated power limits apply above +25°C ambient.

Does the TPS76833QPWP require an external feedback resistor network?

No, the TPS76833QPWP is a fixed-output 3.3-V variant; the FB/NC pin (pin 15) is internally connected and must be left unconnected. External resistors are only required for the adjustable TPS76801 version. Using resistors with the TPS76833QPWP would disrupt regulation and is not supported.

How does the power-good (PG) output function on the TPS76833QPWP?

The PG pin on the TPS76833QPWP is an open-drain output that pulls low when the regulated 3.3-V output falls below 92–98% of nominal (≈3.04–3.23 V). It requires an external pull-up resistor (typically 10–100 kΩ to 3.3 V or 5 V) and is commonly used to drive MCU reset inputs or fault indicators. PG does not assert for minor tolerance deviations-only for significant output collapse.

Can the TPS76833QPWP operate without an input bypass capacitor?

Yes-the TPS76833QPWP does not require an input capacitor for stability. However, a 0.047-µF ceramic capacitor placed close to the IN pins improves high-frequency noise rejection and load transient response, especially when the device is located >2 inches from the source. This is optional but recommended for noise-sensitive applications like precision ADCs or RF subsystems.

What thermal considerations apply to the TPS76833QPWP in its PWP package?

The TPS76833QPWP's HTSSOP-20 (PWP) package has a junction-to-ambient thermal resistance (RθJA) of 32.6°C/W with no airflow. To maintain TJ ≤125°C at 1 A and 10 V input, the PCB must provide ≥4-in² copper pour connected to all six GND/HSINK pins. With 250 CFM airflow, power dissipation rises to 4.1 W-enabling full 1-A operation even at +85°C ambient.