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Texas Instruments LMR60406-Q1 Synchronous Buck Converter

Texas Instruments LMR60406-Q1 Synchronous Buck Converter is an automotive 36V, 0.6A converter with low EMI, high-efficiency, and minimized capacitance output. This buck converter operates from 200kHz to 2.2MHz with a programmable switching frequency range. The LMR60406-Q1 DC-DC converter is designed to step down a higher input voltage to a lower, regulated output voltage efficiently. This converter offers variants with spread spectrum in an ultra-compact, 2.5mm x 2mm, HotRod QFN-9 package, with wettable flanks available. The LMR60406-Q1 device is AEC-Q100 qualified for automotive applications. This LMR60406-Q1 converter is suitable for automotive infotainment and cluster, automotive driver assistance systems, and automotive body requirements. 

Features

  • Functional safety-capable documentation is available to aid in functional safety system design
  • AEC-Q100 qualified for automotive applications
  • -40°C to 125°C ambient operating temperature range, device temperature grade 1
  • 3V to 36V (42V absolute maximum) wide operating input voltage range
  • Pin programmable output voltage options available in fixed 3.3V/ADJ and 5V/ADJ
  • 1V to 20V adjustable output voltage range
  • 30ns (typical) low minimum on time tON
  • Optimized for low Electromagnetic Interference (EMI) requirements:
    • Low inductance HotRod™ QFN package
    • Advanced spread-spectrum options are available
  • 200kHz to 2.2MHz programmable switching frequency range
  • FPWM, PFM, or external frequency synchronization available
  • Ultra-low quiescent current:
    • 0.65μA shutdown current
    • 5μA standby current
  • Designed for scalable power supplies:
    • Pin compatible with LMR60410-Q1, LMR60420-Q1, LMR60430-Q1, and LMR60440-Q1
  • Power-Good output for power sequencing

Applications

  • Automotive infotainment and cluster
  • Automotive driver assistance systems
  • Automotive body requirements

Block Diagram

Block Diagram - Texas Instruments LMR60406-Q1 Synchronous Buck Converter

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Published: 2025-09-19 | Updated: 2025-09-30