Texas Instruments TL760M25QKTTRQ1

Overview

TL760M25QKTTRQ1 from Texas Instruments is an automotive-grade, fixed-output 2.5-V low-dropout linear regulator with ±3% output voltage accuracy across load and temperature, 500-mA output current capability, 500-mV maximum dropout at full load, and integrated load-dump protection up to 45 V. It serves as a primary power supply for microcontrollers and sensors in engine control units.

For engineers reviewing the TL760M25QKTTRQ1 datasheet, TL760M25QKTTRQ1 pinout, TL760M25QKTTRQ1 application, or TL760M25QKTTRQ1 equivalent, key selection criteria include dropout voltage under automotive transients, thermal performance in TO-263 packages, load regulation stability with low-ESR tantalum capacitors, and qualification per AEC-Q100 Grade 1.

Technical Context

The TL760M25QKTTRQ1 uses a PNP pass transistor architecture enabling stable operation with 22-µF tantalum output capacitors (ESR = 1.5 Ω), optimized for automotive environments where input voltage can surge to 45 V during load dump. Its internal protection includes thermal overload shutdown, overvoltage clamping, and current limiting.

It operates across –40°C to +125°C virtual junction temperature, supports input voltages from 3 V to 26 V (minimum VI = VO + 0.6 V), and delivers 2.5 V ±3% (2.425 V to 2.575 V) across full load (5–500 mA) and temperature range.

Key Specifications

Pinout & Package

TL760M25QKTTRQ1 is housed in a thermally enhanced DDPAK/TO-263 (KTT) package with exposed tab for heatsinking. The 3-pin configuration supports high-current automotive applications with minimal PCB area.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL760M25QKTTRQ1, TLE4274G offers lower cost but reduced transient robustness, while TPS7B6725QPWPRQ1 provides tighter regulation and diagnostics at the expense of board rework and higher component count.

Availability

TL760M25QKTTRQ1 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body control modules requiring stable component supply under automotive thermal and electrical stress.

Supply support for TL760M25QKTTRQ1 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for automotive, industrial, and personal electronics markets.

The TL760M family was designed specifically for automotive power management in harsh environments, emphasizing load-dump resilience, wide temperature operation, and compatibility with low-cost passive components.

FAQ

What is the maximum input voltage rating for TL760M25QKTTRQ1?

The TL760M25QKTTRQ1 has an absolute maximum input voltage rating of 45 V, enabling it to survive ISO 7637-2 Load Dump Pulse 5a without external protection circuitry. This rating is validated across the full operating junction temperature range and forms the basis for its use in engine bay applications where battery voltage surges are common. The device remains functional and protected up to this limit.

Does TL760M25QKTTRQ1 require an external capacitor on the output pin?

Yes, TL760M25QKTTRQ1 requires a 22-µF tantalum capacitor with ≤1.5-Ω equivalent series resistance (ESR) on the output pin for stability across all operating conditions. The datasheet explicitly specifies this value and ESR range based on control-loop compensation analysis. Using ceramic capacitors without series resistance or lower-ESR types may cause oscillation or instability, especially under varying load currents.

Is TL760M25QKTTRQ1 qualified for automotive applications?

Yes, TL760M25QKTTRQ1 is AEC-Q100 qualified Grade 1 (–40°C to +125°C TJ), with full documentation of qualification testing including HTOL, temperature cycling, and ESD. It is designated with the "Q1" suffix per TI's automotive part numbering convention and is listed as active in TI's packaging information table with green RoHS-compliant finish and MSL Level-3 moisture sensitivity rating.

What is the dropout voltage specification for TL760M25QKTTRQ1 at 500 mA load?

The dropout voltage for TL760M25QKTTRQ1 is specified as 500 mV maximum at 500 mA output current and TJ = 125°C. This value is measured when the output voltage drops 100 mV below its nominal 2.5 V, confirming reliable regulation down to 3.0 V input - a critical margin during automotive cold-crank events where battery voltage falls below 7 V.

How does TL760M25QKTTRQ1 handle thermal overload conditions?

TL760M25QKTTRQ1 incorporates internal thermal-overload protection that disables the output when the virtual junction temperature reaches approximately 150°C. After shutdown, the device remains off until junction temperature falls sufficiently to allow safe restart, with built-in hysteresis preventing rapid cycling. This behavior is documented in the Absolute Maximum Ratings and Recommended Operating Conditions sections of the datasheet.