Texas Instruments TPS76725QPWP

Overview

TPS76725QPWP from Texas Instruments is a 2.5-V fixed-output, 1-A low-dropout linear regulator with PMOS pass element, 350 mV dropout at 1 A (25°C), ±2% output voltage tolerance over line/load/temperature, and integrated open-drain power-on reset with 200-ms delay - used in battery-powered microcontroller power rails requiring stable low-noise 2.5-V supply.

For engineers reviewing the TPS76725QPWP datasheet, TPS76725QPWP pinout, TPS76725QPWP application, or TPS76725QPWP equivalent, key selection criteria include dropout voltage vs load/temperature, RESET threshold hysteresis (92–98% VO), quiescent current stability (85 µA typ, independent of load), and compatibility with 10-µF low-ESR ceramic output capacitors.

Technical Context

The TPS76725QPWP employs a voltage-driven PMOS pass transistor to achieve ultralow and load-independent quiescent current (85 µA typ) and avoid PNP saturation effects during dropout. Its internal 1.1834-V reference feeds a high-impedance error amplifier that regulates output via feedback sensing at the FB/NC pin (open for fixed versions).

A dedicated comparator monitors regulated output voltage and asserts the open-drain RESET pin when VO drops below 92% of nominal (2.3 V for TPS76725QPWP); hysteresis ensures clean release at ~98% (2.45 V). Thermal shutdown activates at TJ = 150°C, with automatic recovery at ~130°C.

Key Specifications

Pinout & Package

TPS76725QPWP is housed in a 20-pin HTSSOP PowerPAD™ (PWP) package (6.50 mm × 4.40 mm), featuring eight GND/HSINK pins (1, 2, 9, 10, 11, 12, 19, 20) for enhanced thermal dissipation and low-inductance grounding.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS76725QPWP, TPS76725QD offers identical regulation performance in a smaller SOIC footprint but sacrifices thermal capability, while TPS7A4700RGWR excels in noise-sensitive analog domains but cannot support 1-A digital loads or provide integrated RESET - making TPS76725QPWP uniquely balanced for mixed-signal embedded systems requiring robustness, integration, and thermal headroom.

Availability

TPS76725QPWP is available at Aetrix Electronics and suitable for industrial sensor nodes, medical wearables, automotive body control modules, and test & measurement equipment requiring stable component supply with full lifecycle support.

Supply support for TPS76725QPWP 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for industrial, automotive, and consumer applications.

The TPS767xx family was designed specifically for battery-powered and thermally constrained systems needing fast-transient, low-quiescent-current LDO regulation with integrated power-good monitoring - targeting portable instrumentation, automotive sub-systems, and IoT edge devices.

FAQ

What is the maximum input voltage for TPS76725QPWP?

The absolute maximum input voltage for TPS76725QPWP is 13.5 V, but the recommended operating range is 3.5 V to 10 V. Exceeding 10 V risks violating the dropout constraint (VI must be ≥ VO + VDO), and operation above 13.5 V may cause permanent damage per Absolute Maximum Ratings. Always observe VI ≤ 10 V in normal use to ensure long-term reliability of the TPS76725QPWP.

Does TPS76725QPWP require an external resistor divider for output voltage setting?

No, TPS76725QPWP is a fixed 2.5-V output device; the FB/NC pin is internally connected and must remain unconnected (no external resistors). Only the adjustable TPS76701 variant requires an external R1/R2 divider. Using resistors with TPS76725QPWP would disrupt internal feedback and cause regulation failure - the TPS76725QPWP operates correctly with FB/NC left floating.

What is the RESET output behavior during startup of TPS76725QPWP?

During startup, the RESET pin of TPS76725QPWP remains low until the output reaches 98% of 2.5 V (~2.45 V), then stays high for ≥200 ms before becoming valid. If VO subsequently drops below 92% (~2.30 V), RESET asserts low again. This behavior is confirmed in the datasheet timing diagram and ensures deterministic microcontroller reset assertion - critical for reliable boot of systems using the TPS76725QPWP.

Can TPS76725QPWP operate without a minimum load current?

Yes, TPS76725QPWP is stable at zero load - no minimum output current is required. This is explicitly stated in Section 9.4.1 (Minimum Load Requirements) of the datasheet. Unlike older LDOs, its PMOS architecture and compensation design maintain loop stability from 0 mA to 1 A, enabling use in standby circuits and intermittent-load applications without adding dummy loads - a key advantage of the TPS76725QPWP.

What thermal derating applies to TPS76725QPWP at 85°C ambient?

At TA = 85°C, the maximum continuous output current for TPS76725QPWP is limited by thermal constraints. With RθJA = 35.8°C/W and TJmax = 125°C, PD(max) = (125 − 85)/35.8 ≈ 1.12 W. For VO = 2.5 V and VI = 5 V, PD = (5 − 2.5) × IO → IO ≤ 1.12 / 2.5 ≈ 448 mA. Thus, full 1-A operation requires active cooling or lower ambient - this derating is inherent to the TPS76725QPWP's PWP package thermal performance.