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LMR60460-Q1

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Automotive, 36V, 6A synchronous buck converter with low Iq and high efficiency with minimized COUT

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Data sheet

LMR60460-Q1

PREVIEW
Data sheet Order now

Product details

Rating Automotive Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 TI functional safety category Functional Safety-Capable Operating temperature range (°C) to Iq (typ) (µA) 4 Duty cycle (max) (%) 98 Type Converter
Rating Automotive Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 TI functional safety category Functional Safety-Capable Operating temperature range (°C) to Iq (typ) (µA) 4 Duty cycle (max) (%) 98 Type Converter
UNKNOWN (VBC) 9 See data sheet
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • Functional Safety-Capable
  • Wide operating input voltage: 3V to 36V (42V Absolute Maximum)
  • Programmable output voltage options available in fixed 1.8V/ADJ, 3.3V/ADJ, 3.8V/ADJ, and 5V/ADJ
    • Adjustable output voltage range from 1V to 20V
  • Ultra-low quiescent current
    • Shutdown current: 0.65µA
    • No load standby current: 5µA
  • Optimized control loop for low output capacitance
  • Optimized for ultra low EMI requirements:
    • Facilitates CISPR 25 class 5 compliance
    • Low inductance HotRod™ QFN package
    • Spread spectrum options available
  • Switching frequency from 200kHz – 2.2MHz
  • Low minimum on time tON (30ns typical)
  • FPWM, PFM, or external frequency synchronization available
  • Designed for scalable power supplies
  • Power-Good output for power sequencing
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • Functional Safety-Capable
  • Wide operating input voltage: 3V to 36V (42V Absolute Maximum)
  • Programmable output voltage options available in fixed 1.8V/ADJ, 3.3V/ADJ, 3.8V/ADJ, and 5V/ADJ
    • Adjustable output voltage range from 1V to 20V
  • Ultra-low quiescent current
    • Shutdown current: 0.65µA
    • No load standby current: 5µA
  • Optimized control loop for low output capacitance
  • Optimized for ultra low EMI requirements:
    • Facilitates CISPR 25 class 5 compliance
    • Low inductance HotRod™ QFN package
    • Spread spectrum options available
  • Switching frequency from 200kHz – 2.2MHz
  • Low minimum on time tON (30ns typical)
  • FPWM, PFM, or external frequency synchronization available
  • Designed for scalable power supplies
  • Power-Good output for power sequencing

The LMR60460-Q1 is a 3V to 36V (42V transient), 6A,automotive-grade synchronous buck converter. The LMR60460-Q1 is available in an ultra compact 2.5mm × 2mm QFN-9 package with wettable flanks, that helps minimize inductance and achieve low EMI performance to facilitate qualification of automotive and other noise-sensitive designs.

All device variants are capable of output voltages ranging from 1V to 20V in adjustable output configuration. Each variant is also capable of delivering a fixed output voltage by connecting the output voltage node directly to the feedback pin. The Device Comparison Table provides details on the fixed output voltage options. The current-mode control architecture with 30ns minimum on-time allows high conversion ratios at high frequencies, easy loop compensation, fast transient response, and excellent load and line regulation.

Open drain power-good output facilitates power sequencing requirements. The MODE/SYNC pin of the LMR60460-Q1 allows the user to select between forced pulse width modulation (FPWM), auto mode or external synchronization mode of operation.

The LMR60460-Q1 is designed to offer reduced output capacitance leading to compact PCB layout and system cost savings. The LMR60460-Q1 is a part of a family of pin-compatible devices ranging in current levels from 0.6A to 6A.

The LMR60460-Q1 is a 3V to 36V (42V transient), 6A,automotive-grade synchronous buck converter. The LMR60460-Q1 is available in an ultra compact 2.5mm × 2mm QFN-9 package with wettable flanks, that helps minimize inductance and achieve low EMI performance to facilitate qualification of automotive and other noise-sensitive designs.

All device variants are capable of output voltages ranging from 1V to 20V in adjustable output configuration. Each variant is also capable of delivering a fixed output voltage by connecting the output voltage node directly to the feedback pin. The Device Comparison Table provides details on the fixed output voltage options. The current-mode control architecture with 30ns minimum on-time allows high conversion ratios at high frequencies, easy loop compensation, fast transient response, and excellent load and line regulation.

Open drain power-good output facilitates power sequencing requirements. The MODE/SYNC pin of the LMR60460-Q1 allows the user to select between forced pulse width modulation (FPWM), auto mode or external synchronization mode of operation.

The LMR60460-Q1 is designed to offer reduced output capacitance leading to compact PCB layout and system cost savings. The LMR60460-Q1 is a part of a family of pin-compatible devices ranging in current levels from 0.6A to 6A.
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* Data sheet LMR60460-Q1 3V to 36V, 6A , Automotive, Synchronous, Buck Converter Optimized for High Power Density, Low EMI, and Low Output Capacitance datasheet PDF | HTML 18 Jul 2025
EVM User's guide LMR60460-Q1 Evaluation Module PDF | HTML 28 Jul 2025
Functional safety information LMR604xx and LMR604xx-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 28 Jul 2025
Certificate LMR60460QEVM EU Declaration of Conformity (DoC) 25 Jun 2025

Design & development

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Evaluation board

LMR60440QEVM — LMR60440-Q1 evaluation module

The LMR60440-Q1 is a 36V, 4A, DC/DC buck converter that features synchronous rectification to achieve high conversion efficiency in a small footprint. The EVM operates over a wide input voltage range of 8V to 36V to provide a regulated 3.3V output up to 4A load at 2.2MHz switching frequency. The (...)
User guide: PDF | HTML
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Evaluation board

LMR60460QEVM — LMR60460-Q1 evaluation module

The LMR60460-Q1 is a 36V, 6A DC/DC buck converter that features synchronous rectification to achieve high conversion efficiency in a small footprint. The evaluation module (EVM) operates over a wide input voltage range of 6V to 36V to provide a regulated 5.0V output up to 6A load at 400kHz (...)
User guide: PDF | HTML
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