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Texas Instruments Synchronous Buck DC/DC Converters | New Product Brief

June 22, 2019 by Mouser Electronics

AEC-Q100 qualified with a wide input voltage range minimizing the need for external surge suppression.

This New Product Brief (NPB) is part of a video series highlighting the features, applications, and technical specs of newly-released products.

Texas Instruments Synchronous Buck DC/DC Converters 

Texas Instruments LM5164-Q1 Synchronous Buck DC/DC Converters are AEC-Q100 qualified and have a wide input voltage range minimizing the need for external surge suppression.

The regulators can operate from a 6V to 100V input and have a minimum controllable on-time of 50ns. This enables large conversion ratios for reduced system complexity and cost, such as direct step-down from a nominal 48V automotive battery to low-voltage rails. The regulators integrate high- and low-side MOSFETs and can output up to 1A.

They feature an ultra-low quiescent current and offer high efficiency even at light loads by operating in diode emulation mode. The LM5164-Q1 has an adjustable switching frequency up to 1MHz and optimized for CISPR 25 EMI requirements.

  • Wide input voltage range: 6V to 100V
    • Minimizes required external surge suppression
  • Minimum constant on-time: 50ns
    • Enables large conversion ratios
    • Convert 48V directly to low-voltage rails
  • Integrated high-side and low-side MOSFETs
  • Output current: 1A
  • Ultra-low IQ
    • Active: 600µA
    • Sleep: 10.5µA
    • Shutdown: 3µA
  • Optimized for CISPR 25 EMI standard

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