Texas Instruments TL750M05QKTTRQ1

Overview

TL750M05QKTTRQ1 from Texas Instruments is an automotive-grade 5-V, 750-mA low-dropout linear voltage regulator in a TO-263-3 (KTT) package. It delivers stable output with dropout voltage ≤0.65 V at 750 mA, integrated load-dump protection up to 60 V, and operates across –40°C to 125°C virtual junction temperature. It powers infotainment power rails, body control modules, and ADAS sensor supplies where battery-direct operation and transient robustness are required.

For engineers reviewing the TL750M05QKTTRQ1 datasheet, TL750M05QKTTRQ1 pinout, TL750M05QKTTRQ1 application, or TL750M05QKTTRQ1 equivalent, key selection criteria include automotive AEC-Q100 qualification, load-dump immunity, thermal performance in TO-263-3, dropout behavior under full load, and compatibility with 10-µF tantalum output capacitors per TI SGLS312J.

Technical Context

The TL750M05QKTTRQ1 implements a fixed-output, internally compensated LDO architecture with bandgap reference, current-limiting, overvoltage shutdown, and thermal overload protection. Its control loop is optimized for stability with 10-µF tantalum output capacitors having ESR between 0.13 Ω and 2 Ω.

It lacks an enable input-distinguishing it from the TL751Mxx-Q1 series-and relies on direct input connection for power sequencing. Input voltage range is 6 V to 26 V, supporting 12-V automotive battery systems including cold-crank and load-dump transients.

Key Specifications

Pinout & Package

TL750M05QKTTRQ1 uses the TO-263-3 (KTT) thermally enhanced surface-mount package with exposed thermal pad electrically connected to COMMON. The three terminals are arranged in standard top-view order: Pin 1 = OUTPUT, Pin 2 = COMMON, Pin 3 = INPUT.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL750M05QKVURQ1, TL750M05QKTTRQ1 offers superior thermal performance in high-power automotive modules; compared with TPS7B6750QDDARQ1, it trades enable functionality and ultra-low IQ for higher output current and proven load-dump resilience without external components.

Availability

TL750M05QKTTRQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, body electronics modules, and ADAS sensor supplies requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for TL750M05QKTTRQ1 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 ICs, with decades of experience in high-reliability power management solutions.

The TL750Mxx-Q1 series was designed specifically for automotive power rails demanding robustness against battery transients, wide temperature operation, and zero-additional-protection integration-targeting body, chassis, and infotainment domains.

FAQ

What is the maximum input voltage TL750M05QKTTRQ1 can withstand during load-dump events?

TL750M05QKTTRQ1 is rated for 60 V transient input voltage per ISO 7637-2 Pulse 5a, verified in production testing. This allows direct connection to 12-V automotive battery systems without external TVS diodes. Continuous input voltage remains limited to 26 V, and operation above that-even briefly-may cause permanent damage. The 60 V rating applies only to short-duration transients defined in the standard.

Does TL750M05QKTTRQ1 include an enable (EN) pin?

No, TL750M05QKTTRQ1 does not have an enable pin. It is a three-terminal fixed-output LDO (OUTPUT, COMMON, INPUT) with no digital control interface. For enable functionality, TI offers the TL751M05QKTTRQ1 variant, which adds TTL/CMOS-compatible ENABLE and NC pins in a 5-pin TO-263-5 package. TL750M05QKTTRQ1 powers up whenever valid input voltage is applied.

What output capacitor is required for stable operation of TL750M05QKTTRQ1?

TI specifies a minimum 10-µF tantalum capacitor with ESR between 0.13 Ω and 2 Ω on the output of TL750M05QKTTRQ1. Ceramic capacitors alone are not recommended due to insufficient ESR; if used, a series resistor must be added to meet the ESR window. Stability is validated per Figure 2 and Figure 3 in SGLS312J, and deviation risks oscillation or poor transient response.

Is TL750M05QKTTRQ1 qualified to AEC-Q100, and what grade does it meet?

Yes, TL750M05QKTTRQ1 is AEC-Q100 qualified and meets Grade 1 requirements (–40°C to +125°C operating junction temperature). This qualification covers accelerated stress tests including HTOL, TC, UHAST, and ESD, confirming suitability for passenger compartment and engine bay–adjacent automotive applications. The "Q1" suffix explicitly denotes automotive qualification.

How does the thermal performance of TL750M05QKTTRQ1 compare between TO-263-3 and TO-252-3 packages?

TL750M05QKTTRQ1 in TO-263-3 (KTT) has θJA = 27.5°C/W, while the TO-252-3 variant TL750M05QKVURQ1 has θJA = 38.6°C/W-39% higher thermal resistance. Under identical ambient conditions and 750-mA load, the KTT package runs ~30°C cooler. This makes TL750M05QKTTRQ1 preferable for high-power-density automotive modules where heatsinking area is limited.