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LMR38010-Q1

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Automotive SIMPLE SWITCHER® 4.2-V to 80-V, 1-A synchronous buck converter

Product details

Vin (min) (V) 4.2 Vin (max) (V) 80 Vout (min) (V) 1 Vout (max) (V) 75 Iout (max) (A) 1 Iq (typ) (mA) 0.04 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 EMI features Spread Spectrum Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed Operating temperature range (°C) -40 to 150 Rating Automotive TI functional safety category Functional Safety-Capable Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 98 Type Converter
Vin (min) (V) 4.2 Vin (max) (V) 80 Vout (min) (V) 1 Vout (max) (V) 75 Iout (max) (A) 1 Iq (typ) (mA) 0.04 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 EMI features Spread Spectrum Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed Operating temperature range (°C) -40 to 150 Rating Automotive TI functional safety category Functional Safety-Capable Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 98 Type Converter
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, T A
  • Functional Safety-Capable
  • Configured for rugged automotive applications
    • 4.2-V to 80-V input voltage range
    • 1-A continuous output current
    • Ultra-low 40-µA operating quiescent current
    • > 1.5-mm distance between VIN and GND pin
    • 200-kHz to 2.2-MHz adjustable switching frequency
    • Frequency synchronization to external clock
    • Spread spectrum for reduced EMI
    • 97% maximum duty cycle
    • Support start-up with pre-biased output
    • ±1.0% tolerance voltage reference at room temperature
    • Precision enable
    • Easy to use device with integrated compensation network enabling low BOM count
    • Integrated synchronous rectification
    • 8-pin HSOIC with PowerPAD™ integrated circuit package
    • PFM and forced PWM (FPWM) options
    • Available in 2-A, LMR38020-Q1
  • Create a custom design using the LMR38010-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, T A
  • Functional Safety-Capable
  • Configured for rugged automotive applications
    • 4.2-V to 80-V input voltage range
    • 1-A continuous output current
    • Ultra-low 40-µA operating quiescent current
    • > 1.5-mm distance between VIN and GND pin
    • 200-kHz to 2.2-MHz adjustable switching frequency
    • Frequency synchronization to external clock
    • Spread spectrum for reduced EMI
    • 97% maximum duty cycle
    • Support start-up with pre-biased output
    • ±1.0% tolerance voltage reference at room temperature
    • Precision enable
    • Easy to use device with integrated compensation network enabling low BOM count
    • Integrated synchronous rectification
    • 8-pin HSOIC with PowerPAD™ integrated circuit package
    • PFM and forced PWM (FPWM) options
    • Available in 2-A, LMR38020-Q1
  • Create a custom design using the LMR38010-Q1 with the WEBENCH Power Designer

The LMR38010-Q1 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. The LMR38010-Q1 operates during input voltage dips as low as 4.2 V, at nearly 100% duty cycle if needed, making the device an excellent choice for 48-V battery automotive applications and MHEV/EV systems.

The LMR38010-Q1 uses precision enable to provide flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the need for an external supervisor. The device incorporates pseudorandom spread spectrum for minimal EMI and switching frequency can be configured between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

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 LMR38010-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in an 8-pin HSOIC PowerPAD integrated circuit package.

The LMR38010-Q1 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. The LMR38010-Q1 operates during input voltage dips as low as 4.2 V, at nearly 100% duty cycle if needed, making the device an excellent choice for 48-V battery automotive applications and MHEV/EV systems.

The LMR38010-Q1 uses precision enable to provide flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the need for an external supervisor. The device incorporates pseudorandom spread spectrum for minimal EMI and switching frequency can be configured between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

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 LMR38010-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in an 8-pin HSOIC PowerPAD integrated circuit package.

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* Data sheet LMR38010-Q1 4.2-V to 80-V, 1-A, Automotive, Synchronous SIMPLE SWITCHER Power Converter with 40-µA IQ datasheet (Rev. A) PDF | HTML 12 May 2023
Functional safety information LMR380x0-Q1 Functional Safety, FIT Rate, Failure Mode Distribution, and Pin FMA PDF | HTML 05 Nov 2021
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019

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