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LM61440AFSQRJRRQ1 AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

LM61440AFSQRJRRQ1 product

LM61440AFSQRJRRQ1

Voltage Regulators - DC DC Switching Regulators

4 A buck regulatorautomotiveAEC-Q100 Grade 1FPWMspread spectrumVQFN-HR

LM61440AFSQRJRRQ1 is a 4 A automotive synchronous buck regulator with fixed-frequency PWM operation at light load, spread spectrum, and adjustable switching frequency from 200 kHz to 2.2 MHz.

Best for

  • Automotive 5 V and 3.3 V rails
  • Infotainment and display power
  • ADAS and body electronics requiring controlled EMI

Avoid if

  • Applications needing output current above 4 A without derating analysis
  • Designs that cannot tolerate fixed-frequency PWM light-load behavior
  • Layouts unable to place input bypass capacitors adjacent to VIN/PGND pins

Check before use

  • Confirm input and load transient conditions
  • Check switching-frequency thermal derating
  • Verify inductor saturation current against current limits
  • Follow the recommended low-EMI PCB layout

Key specifications

Input voltage
3 V to 36 V operating; 42 V maximum
Output current
4 A maximum
Switching frequency
200 kHz to 2.2 MHz adjustable
Light-load mode
FPWM
Qualification
AEC-Q100 Grade 1, -40°C to +150°C junction

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
MSL Level 2, 260°C, 1 year
ECCN
-
HTSUS
-

Application

Automotive power railsADAS and body electronicsInfotainment and displaysLow-EMI buck power stages

Datasheet

sszt361

800 KB

Datasheet AI

CAD Models

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Alternative components

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Design and risk insights

Questions & answers

LM61440AFSQRJRRQ1 is a Texas Instruments AEC-Q100 Grade 1, 4 A synchronous buck regulator. It integrates high-side and low-side MOSFETs and operates from a 3 V to 36 V input after startup, with a 42 V maximum input rating.