Texas Instruments TL750M12QKTTRQ1

Overview

TL750M12QKTTRQ1 from Texas Instruments is an automotive-grade, low-dropout linear voltage regulator delivering a fixed 12 V output at up to 750 mA. It features load-dump protection up to 60 V, internal overvoltage and thermal shutdown, and operates across –40°C to 125°C virtual junction temperature. It is used in always-on vehicle subsystems such as body control modules and infotainment power rails.

For engineers reviewing the TL750M12QKTTRQ1 datasheet, TL750M12QKTTRQ1 pinout, TL750M12QKTTRQ1 application, or TL750M12QKTTRQ1 equivalent, key selection criteria include dropout voltage under full load, transient input tolerance, quiescent current at standby, and TO-263-3 package thermal performance in constrained automotive PCB layouts.

Technical Context

The TL750M12QKTTRQ1 employs a PNP pass transistor architecture with integrated bandgap reference, current-limiting, and overvoltage protection circuitry. Its feedback loop is optimized for stability with 10 µF tantalum output capacitors and ESR between 0.13 Ω and 2 Ω.

It lacks an enable input-unlike the TL751M series-and operates continuously when input voltage is within 13 V–26 V. Protection functions activate autonomously: load-dump clamping engages at ≤60 V transients, thermal shutdown triggers above 150°C virtual junction temperature, and reverse-battery tolerance extends to –50 V for 100 ms.

Key Specifications

Pinout & Package

TL750M12QKTTRQ1 uses the TO-263-3 (KTT) surface-mount package with exposed thermal pad. The COMMON terminal is electrically connected to the mounting base for enhanced thermal conduction and EMI shielding.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-dropout automotive voltage regulation applications.

Compared with TL750M12QKVURQ1, the TL750M12QKTTRQ1 offers superior thermal performance in high-power, thermally dense layouts; compared with TL751M12QKTTRQ1, it trades enable functionality for simpler biasing and reduced BOM count in always-on applications.

Availability

TL750M12QKTTRQ1 is available at Aetrix Electronics and suitable for body control modules, instrument clusters, rear camera systems, and telematics units requiring stable component supply across automotive production lifecycles.

Supply support for TL750M12QKTTRQ1 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 automotive electronics, with decades of automotive qualification expertise and AEC-Q100-compliant manufacturing.

The TL750M-Q1 series was designed specifically for harsh automotive environments - targeting permanent-battery-connected systems needing robust load-dump, reverse-battery, and thermal protection without external components.

FAQ

What is the maximum continuous input voltage for TL750M12QKTTRQ1?

The TL750M12QKTTRQ1 supports a continuous input voltage range of 13 V to 26 V. This range ensures reliable operation across automotive battery conditions including cold-crank (down to ~6 V for other variants) and alternator regulation, while maintaining 12 V output regulation. Transient input tolerance extends to 60 V for load-dump events per ISO 7637-2 Pulse 5a.

Does TL750M12QKTTRQ1 have an enable pin?

No, TL750M12QKTTRQ1 does not include an enable pin. It is a three-terminal device (INPUT, OUTPUT, COMMON) that powers on automatically when valid input voltage is applied. For designs requiring controlled startup/shutdown, the pin-compatible TL751M12QKTTRQ1 - which adds a TTL/CMOS-compatible ENABLE input - should be selected instead.

What output capacitor is required for stable operation of TL750M12QKTTRQ1?

TL750M12QKTTRQ1 requires a minimum 10 µF tantalum output capacitor with ESR between 0.13 Ω and 2 Ω for guaranteed stability across –40°C to 125°C. Ceramic capacitors alone are insufficient due to near-zero ESR; if used, a series resistor must be added to emulate the required ESR per Figure 2 and Table 1 in the datasheet.

How does TL750M12QKTTRQ1 handle reverse-battery conditions?

TL750M12QKTTRQ1 withstands –50 V reverse input voltage for up to 100 ms without damage or parametric shift. This capability protects against jump-start misconnections and simplifies front-end protection design in automotive modules where battery polarity reversal is a known field risk.

Is TL750M12QKTTRQ1 RoHS compliant and lead-free?

Yes, TL750M12QKTTRQ1 is RoHS compliant with lead-free (Sn) termination and meets JEDEC MSL Level-3 (245°C peak reflow, 168-hour floor life). The TO-263-3 (KTT) package uses matte tin plating and is qualified for standard Pb-free reflow profiles per IPC-J-STD-020.