TI LM2743Q1MTCX/NOPB

Mfr. Part

LM2743Q1MTCX/NOPB

Manufacturer

Luminary Micro Texas Instruments. Y-IC is a quality distributor of Texas Instruments. We will provide you with the best products and services, fast delivery, and trusted support.

Detailed Description

Automotive-grade synchronous PWM buck controller for step-down DC-DC conversion. The LM2743-Q1 controls external MOSFETs to achieve high-efficiency regulation from automotive and industrial input rails down to low-voltage outputs. It is AEC-Q100 qualified, housed in a compact TSSOP-14 package, and suited for point-of-load power in space-constrained designs. The NOPB suffix indicates lead-free, RoHS-compliant plating.

Key Features

Q1 automotive qualification for high reliability in harsh environments

Synchronous buck PWM control for high efficiency with external MOSFETs

Compact TSSOP-14 footprint for dense layouts

Soft-start and enable control for smooth power-up and sequencing

Precision feedback error amplifier to maintain tight output regulation

Undervoltage lockout and overcurrent protection for safer operation

Flexible compensation to optimize transient response

Wide applicability to common automotive 12 V systems and industrial rails

Lead-free NOPB finish and RoHS compliance

Key Advantages

Automotive-grade robustness reduces field failure risk

High efficiency with synchronous rectification lowers heat and improves power budget

Small package simplifies routing and saves PCB area

Flexible controller architecture adapts to a broad range of output voltages and power levels

TI ecosystem, tools, and app notes accelerate design and validation

Long-term supply support from a major manufacturer

Y-IC’s vetted sourcing and quality inspection adds an extra layer of assurance

Packaging

Type: Surface-mount TSSOP-14

Case code: 1157

Material: Molded epoxy package with copper leadframe and matte-tin lead finish (lead-free NOPB)

Size: Typical TSSOP-14 body width about 4.4 mm, length about 5.0 mm, height about 1.2 mm; lead pitch 0.65 mm; 14 gull-wing leads

Pin configuration: 14-lead TSSOP, pins for high-side and low-side gate drive, VCC, GND, feedback, compensation, soft-start, sense and control (refer to datasheet for exact pinout)

Thermal characteristics: TSSOP-14 packages typically offer ThetaJA in the ~100–150 °C/W range depending on PCB copper and airflow; ThetaJC is typically much lower. Exact values depend on layout and are given in the datasheet

Electrical properties: Operating temperature range suitable for automotive applications (commonly -40 to 125 °C for Q1 devices). ESD and moisture sensitivity levels are per AEC-Q100 and JEDEC standards for TSSOP; consult the datasheet for exact ratings

Compliance: RoHS compliant, lead-free NOPB

Lifecycle

Status: Active and in ongoing production based on the latest available information. Not known to be nearing discontinuation

Equivalent or alternative models: Functional alternatives in the same category of synchronous buck controllers may include LM2743MTCX/NOPB (commercial-grade variant), LM2742-Q1 (related controller with different frequency/options), and other TI automotive synchronous buck controllers. These are not necessarily pin-compatible and specifications differ. Always verify electrical limits, features, and pinout in the datasheets

If you need form-fit-function equivalents or certified replacements tailored to your design, contact our sales team via the Y-IC website for detailed cross-references and sourcing support

Key Application Areas

Automotive point-of-load regulators for infotainment, instrument clusters, ADAS modules, body electronics, telematics, and gateways

Industrial control and factory automation systems needing efficient step-down regulators

Telecom and networking equipment power rails

FPGA, ASIC, DSP, and MCU core supplies from 12 V or 24 V buses

Battery-powered systems and distributed power architectures

Datasheet

Y-IC hosts the most authoritative and up-to-date datasheet for this product model. We recommend downloading the datasheet directly from this page to review exact specifications, pinout, thermal data, and design guidance.

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