Texas Instruments TPS76625D

Overview

TPS76625D from Texas Instruments is a 2.5V fixed-output, 250mA low-dropout linear voltage regulator in an 8-pin SOIC package. It operates from 2.5V to 16V input, delivers ±1% output accuracy over load and temperature, features 260mV typical dropout at 250mA (new chip revision), 46dB PSRR at 1MHz, and open-drain power-good signaling - used for stable MCU biasing in HVAC control modules.

For engineers reviewing the TPS76625D datasheet, TPS76625D pinout, TPS76625D application, or TPS76625D equivalent, this page provides verified electrical specs, thermal performance data, EN/PG interface behavior, SOIC-8 layout guidance, and validated alternatives for industrial power-rail design.

Technical Context

The TPS76625D implements a PMOS pass transistor architecture enabling ultra-low dropout and high PSRR across 1kHz–1MHz. Its internal soft-start (750µs typical) limits inrush current during enable sequencing, while the precision bandgap reference and error amplifier maintain 1% output regulation from –40°C to +125°C.

It integrates overcurrent limiting, thermal shutdown (trip at 173°C, reset at 157°C), and a TTL-compatible enable input with 0.4V low threshold and 1.2V high threshold. The open-drain PG output asserts high when VOUT reaches 91–98.5% of nominal and includes 0.45% hysteresis.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (D), 4.9mm × 6mm body, 1.75mm max height, gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS76625D, TPS76725D offers lower cost but sacrifices soft-start and PG functionality critical for robust industrial startup, while MCP1702T-2502E/MB lacks both EN and PG and cannot support 12V input rails - making TPS76625D the only option meeting full industrial sequencing, noise, and voltage-range requirements.

Availability

TPS76625D is available at Aetrix Electronics and suitable for residential HVAC control, automotive body electronics, and smart appliance power management requiring stable component supply, extended temperature operation, and long-term industrial lifecycle support.

Supply support for TPS76625D 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 LDO design expertise and automotive/industrial qualification rigor.

The TPS766 family was engineered for high-reliability industrial and automotive power rails, emphasizing wide input range, precise output regulation, integrated protection, and compatibility with modern low-ESR ceramic capacitors.

FAQ

What is the maximum input voltage rating for the TPS76625D?

The TPS76625D supports an absolute maximum input voltage of 18V, with recommended operation up to 16V. This allows direct use with 12V automotive or HVAC transformer-derived supplies, including transient conditions like load dump, while maintaining regulation and thermal safety.

Does the TPS76625D require an external feedback resistor network?

No, the TPS76625D is a fixed 2.5V output variant - pin 1 (NC/FB) is not connected internally. It does not require external resistors. Leaving NC/FB unconnected is acceptable, though tying it to GND improves thermal performance in high-power-density layouts.

How does the power-good (PG) output behave during startup and fault conditions?

The TPS76625D's open-drain PG pin goes high when VOUT reaches 91–98.5% of 2.5V and remains asserted until VOUT drops below that threshold minus 0.45% hysteresis. During undervoltage or thermal shutdown, PG pulls low after a brief delay, enabling hardware reset generation.

What is the minimum output capacitor required for stability with the TPS76625D?

The TPS76625D is stable with a minimum 2.2µF ceramic output capacitor (X5R/X7R, ≤100mΩ ESR). Unlike legacy LDOs, it does not require tantalum or large electrolytic capacitors - simplifying layout and improving reliability in temperature-cycling environments.

Can the TPS76625D be used in automotive applications?

Yes - the TPS76625D operates across –40°C to +125°C junction temperature, supports 12V system inputs including cold-crank (down to 6.5V) and load-dump (up to 18V), and includes thermal shutdown and overcurrent protection - meeting key requirements for body electronics and infotainment subsystems.