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LMR51460-Q1
  • LMR51460-Q1
  • LMR51460-Q1

LMR51460-Q1

ACTIVE

Automotive, 36V 6A synchronous buck converter with low Iq

Texas Instruments LMR51460-Q1 Product Info

1 April 2026 3

Parameters

Rating

Automotive

Topology

Buck Controller

Iout (max) (A)

6

Vin (max) (V)

36

Vin (min) (V)

3

Vout (max) (V)

38

Vout (min) (V)

1

Control mode

current mode

Features

Enable, Light Load Efficiency, Over Current Protection, Power good, Synchronous Rectification

EMI features

Spread Spectrum

Duty cycle (max) (%)

98

Iq (typ) (A)

0.00000025

TI functional safety category

Functional Safety-Capable

Operating temperature range (°C)

-40 to 125

Package

WSON (DRR)-12-9 mm² 3 x 3

Features

  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Supports automotive system requirements:
    • Wide input voltage range: 4V to 36V
    • 6A continuous output current
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75ns (typical)
    • Low quiescent current: 25µA
    • Adjustable frequency: 200kHz to 1MHz
    • Frequency spread spectrum
    • Protection features:
      • Precision enable input
      • Open-drain PGOOD
      • VIN undervoltage lockout (UVLO)
      • Cycle-by-cycle current limiting
      • Short-circuit protection with hiccup mode
      • Thermal shutdown
  • Small design size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • WSON-12 package
  • PFM and FPWM options in pin-to-pin compatible package
  • Create a custom design using the LMR51460-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Supports automotive system requirements:
    • Wide input voltage range: 4V to 36V
    • 6A continuous output current
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75ns (typical)
    • Low quiescent current: 25µA
    • Adjustable frequency: 200kHz to 1MHz
    • Frequency spread spectrum
    • Protection features:
      • Precision enable input
      • Open-drain PGOOD
      • VIN undervoltage lockout (UVLO)
      • Cycle-by-cycle current limiting
      • Short-circuit protection with hiccup mode
      • Thermal shutdown
  • Small design size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • WSON-12 package
  • PFM and FPWM options in pin-to-pin compatible package
  • Create a custom design using the LMR51460-Q1 with the WEBENCH Power Designer

Description

The LMR51460-Q1 is a wide-VIN, easy-to-use, synchronous buck converter capable of driving up to 6A load current. With a wide input range of 4V to 36V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR51460-Q1 features adjustable switching frequency from 200kHz to 1MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has pulse frequency modulation (PFM version) to realize high efficiency at light load, and forced pulse width modulation (FPWM version) to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimum external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR51460-Q1 is available in a WSON-12 package.

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