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Texas Instruments TL751M12QKTTRQ1
- Part No.:
- TL751M12QKTTRQ1
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
TL751M12QKTTRQ1.pdf
- Description:
- IC REG LINEAR 12V 750MA DDPAK
- Quantity:
- Payment:
- Shipping:
Inventory:479
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Product details
Overview
TL751M12QKTTRQ1 from Texas Instruments is an automotive-grade, low-dropout linear voltage regulator delivering a precise 12 V output at up to 750 mA. It features integrated load-dump protection (up to 60 V), internal overvoltage and thermal shutdown, and a TTL/CMOS-compatible ENABLE input for controlled power sequencing in always-on vehicle systems.
For engineers reviewing the TL751M12QKTTRQ1 datasheet, TL751M12QKTTRQ1 pinout, TL751M12QKTTRQ1 application, or TL751M12QKTTRQ1 equivalent, this device is selected for battery-connected automotive subsystems requiring high reliability, reverse-battery tolerance, and fast enable/disable response (50 µs startup).
Technical Context
The TL751M12QKTTRQ1 implements a PNP pass transistor architecture with bandgap reference, current-limiting, and overvoltage protection circuitry. Its ENABLE input directly controls the output stage, placing the regulator in high-impedance shutdown when logic-high - enabling sequential power-up in multi-rail ECUs.
Designed for virtual junction temperatures from –40°C to 125°C, it operates across input voltages of 13 V to 26 V and maintains regulation under transient load-dump conditions up to 60 V for ≤100 ms. The device uses external output capacitance (≥10 µF, ESR 0.13–2 Ω) for loop stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 12 V ±2% (11.76–12.24 V) - tight tolerance ensures compatibility with 12 V automotive loads without additional regulation. |
| Max Output Current | 750 mA - sufficient to power microcontrollers, sensors, and CAN transceivers in body control modules. |
| Dropout Voltage | 0.6 V at 750 mA (TJ = 25°C) - enables operation down to 12.6 V input, critical during cold-crank conditions. |
| Load-Dump Protection | 60 V transient input (≤100 ms) - withstands ISO 7637-2 Pulse 5a without external clamping. |
| Enable Response Time | 50 µs (ENABLE high → regulated output) - supports deterministic power sequencing in ASIL-B systems. |
| Quiescent Current | 5 mA at 10 mA load - minimizes standby drain on vehicle battery in always-on applications. |
| Shutdown Current | 200 µA (ENABLE ≥2 V) - enables ultra-low-power sleep modes in telematics and infotainment head units. |
Pinout & Package
TL751M12QKTTRQ1 is housed in a TO-263-5 (KTT) thermally enhanced surface-mount package with exposed thermal pad. The package provides low junction-to-board thermal resistance (θJB = 17.3°C/W) and is RoHS-compliant with Sn lead finish (MSL Level-3, 245°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: INPUT | Regulator input supply | Accepts 13–26 V DC; rated for 60 V transient per ISO 7637-2. |
| 2: OUTPUT | Regulated 12 V output | Delivers up to 750 mA; requires ≥10 µF output capacitor with 0.13–2 Ω ESR. |
| 3: COMMON | Ground reference & thermal path | Electrically connected to mounting base; must be soldered to PCB thermal pad for thermal performance. |
| 4: ENABLE | Digital control input | TTL/CMOS-compatible; high = active output, low = high-Z shutdown (200 µA max ISHDN). |
| 5: NC | No internal connection | Not bonded; left unconnected per TI design - no routing or grounding required. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C TJ) - certified for engine bay and cabin ECU deployment. |
| Integrated load-dump protection | Withstands 60 V transients without external TVS - eliminates need for discrete clamp diodes in cost-sensitive designs. |
| Reverse-battery protection | Rated for –15 V continuous, –50 V transient (100 ms) - prevents damage during jump-start misconnections. |
| Thermal overload protection | Auto-recovering shutdown at TJ > ~150°C - prevents permanent failure during sustained overload or poor heatsinking. |
| Low dropout at full load | 0.6 V dropout at 750 mA enables stable 12 V output even at 12.6 V input - essential for cold-crank operation. |
Applications
| Body Control Module (BCM) | Infotainment Power Supply |
|---|---|
Use Scenario: Powers MCU, LIN transceivers, and door-lock actuators in always-on BCMs connected directly to vehicle battery. IC Role / Device Role / Timing Role: Primary 12 V LDO supplying core logic rails; ENABLE synchronized with ignition signal for wake/sleep control. Use Value: Load-dump immunity eliminates need for external TVS; 200 µA shutdown current extends battery life during vehicle park mode. |
Use Scenario: Supplies 12 V to audio DSP, display backlight drivers, and USB hub controllers in head units. IC Role / Device Role / Timing Role: Secondary regulated rail isolated from noisy main 12 V bus; ENABLE used for soft power-down during system suspend. Use Value: 50 µs enable response ensures glitch-free audio mute/unmute; 0.6 V dropout maintains regulation during engine cranking dips. |
| Telematics Control Unit (TCU) | ADAS Camera Power |
Use Scenario: Provides clean 12 V to cellular modem, GNSS receiver, and CAN FD interface in always-connected TCUs. IC Role / Device Role / Timing Role: Always-on LDO with ENABLE controlled by host processor to manage modem power states. Use Value: 750 mA capacity supports concurrent LTE+GNSS operation; reverse-battery rating protects against service miswiring. |
Use Scenario: Powers image sensor and serializer ICs in rear-view or surround-view cameras mounted externally. IC Role / Device Role / Timing Role: Local 12 V regulator placed near camera module; COMMON pin tied to chassis ground for EMI reduction. Use Value: TO-263-5 thermal pad enables conduction cooling in sealed housings; 125°C TJ rating supports under-hood mounting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL751M12QKVURQ1 | Same electrical specs; TO-252-5 (KVU) package - smaller footprint, higher θJA (38.6°C/W), no exposed thermal pad. | Better suited for space-constrained PCBs where thermal load is moderate and heatsinking is via traces only. | Select for cost-sensitive, lower-power (<500 mA) automotive modules with limited board area. |
| TPS7B8750QKVURQ1 | 500 mA, 5 V fixed output; includes RESET output, higher PSRR (65 dB), lower quiescent current (26 µA). | Targets microcontroller core supplies requiring reset assertion and ultra-low IQ - not a 12 V replacement. | Choose when system requires integrated power-good signaling and <30 µA sleep current, not 12 V output. |
Compared with TL751M12QKVURQ1, the TL751M12QKTTRQ1 offers superior thermal performance and higher current capability in a larger but more robust package; versus TPS7B8750QKVURQ1, it delivers higher voltage and current but lacks reset functionality and has higher quiescent draw.
Availability
TL751M12QKTTRQ1 is available at Aetrix Electronics and suitable for automotive body electronics, telematics control units, and ADAS camera power supplies requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for TL751M12QKTTRQ1 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 TL751Mxx-Q1 series is part of TI's automotive-qualified LDO portfolio, designed specifically for battery-connected vehicle subsystems demanding load-dump resilience, wide temperature operation, and controlled enable sequencing.
FAQ
What is the maximum input voltage the TL751M12QKTTRQ1 can withstand during load-dump events?
The TL751M12QKTTRQ1 is rated for 60 V transient input voltage per ISO 7637-2 Pulse 5a, with duration up to 100 ms. This is explicitly specified in the Absolute Maximum Ratings table and validated in automotive testing - no external TVS diode is required for standard load-dump protection. The device remains functional after such events when operated within recommended conditions.
Does the TL751M12QKTTRQ1 require an external capacitor on the ENABLE pin?
No, the TL751M12QKTTRQ1 does not require an external capacitor on the ENABLE pin. Its ENABLE input is CMOS/TTL-compatible with defined VIH (≥2 V) and VIL (≤0.8 V) thresholds, and internal hysteresis ensures noise immunity. External filtering is unnecessary unless system-level EMI mandates it - the 50 µs startup time is achieved without added capacitance.
Can the TL751M12QKTTRQ1 be used in reverse-battery fault conditions?
Yes, the TL751M12QKTTRQ1 is rated for –15 V continuous reverse input voltage and –50 V transient (100 ms), making it suitable for automotive environments where jump-start misconnections may occur. This protection is implemented internally - no external blocking diode is needed, preserving efficiency and board space.
What is the minimum output capacitance required for stable operation of the TL751M12QKTTRQ1?
The TL751M12QKTTRQ1 requires a minimum 10 µF tantalum or ceramic output capacitor with ESR between 0.13 Ω and 2 Ω for guaranteed stability across temperature and load. Lower ESR values (e.g., <0.13 Ω) risk oscillation; higher ESR (>2 Ω) degrades transient response. TI provides ESR vs. load-current guidance in Figures 2 and 3 of the datasheet.
Is the COMMON pin of the TL751M12QKTTRQ1 electrically connected to the thermal pad?
Yes, the COMMON pin (Pin 3) of the TL751M12QKTTRQ1 is electrically connected to the exposed thermal pad and mounting base per TI's mechanical drawing and functional description. This connection must be soldered to a PCB thermal pad to achieve specified θJB (17.3°C/W) and ensure reliable thermal dissipation under full-load conditions.
TL751M12QKTTRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 12V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 750mA
- Current - Output:
- 750mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 55dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Over Voltage, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-5)
TL751M12QKTTRQ1 FAQ
1.How can I place an order for TL751M12QKTTRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL751M12QKTTRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TL751M12QKTTRQ1 reliable?
The price and inventory of TL751M12QKTTRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL751M12QKTTRQ1 is usually 5 days.
3.What payment methods are accepted for TL751M12QKTTRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL751M12QKTTRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL751M12QKTTRQ1?
TL751M12QKTTRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL751M12QKTTRQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TL751M12QKTTRQ1?
For technical support, including TL751M12QKTTRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL751M12QKTTRQ1 requirements.
6.How does Aetrix verify that TL751M12QKTTRQ1 is sourced from the original manufacturer or authorized distributors?
All TL751M12QKTTRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TL751M12QKTTRQ1 meets industry standards.
7.What is the process for return or replacement of TL751M12QKTTRQ1?
All TL751M12QKTTRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TL751M12QKTTRQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TL751M12QKTTRQ1 part is unused and in its original packaging.
Return procedure for TL751M12QKTTRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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