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LMR38010-Q1

ACTIVE

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

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Data sheet

LMR38010-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.2 Vin (max) (V) 80 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 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 EMI features Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 75 Iq (typ) (µA) 40 Duty cycle (max) (%) 98
Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.2 Vin (max) (V) 80 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 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 EMI features Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 75 Iq (typ) (µA) 40 Duty cycle (max) (%) 98
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Configured for rugged automotive applications
    • 4.2V to 80V input voltage range
    • 1A continuous output current
    • Ultra-low 40µA operating quiescent current
    • > 1.5mm distance between VIN and GND pin
    • 200kHz to 2.2MHz adjustable switching frequency
    • Frequency synchronization to external clock
    • Spread spectrum for reduced EMI
    • 97% maximum duty cycle
    • Support start-up with prebiased 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 2A, 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, TA
  • Functional Safety-Capable
  • Configured for rugged automotive applications
    • 4.2V to 80V input voltage range
    • 1A continuous output current
    • Ultra-low 40µA operating quiescent current
    • > 1.5mm distance between VIN and GND pin
    • 200kHz to 2.2MHz adjustable switching frequency
    • Frequency synchronization to external clock
    • Spread spectrum for reduced EMI
    • 97% maximum duty cycle
    • Support start-up with prebiased 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 2A, 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 4.2V, 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 200kHz and 2.2MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller design 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 4.2V, 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 200kHz and 2.2MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller design 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 4.2V to 80V, 1A , Automotive, Synchronous SIMPLE SWITCHER Power Converter With 40µA IQ datasheet (Rev. B) PDF | HTML 23 Jan 2024
Functional safety information LMR380x0-Q1 Functional Safety, FIT Rate, Failure Mode Distribution, and Pin FMA PDF | HTML 05 Nov 2021

Design & development

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Evaluation board

LMR38020QEVM — LMR38020-Q1 evaluation module SIMPLE SWITCHER® power converter 80-V, 2-A, synchronous buck, 40-µA IQ

The LM38020QEVM evaluation module (EVM) uses the LMR38020S-Q1, a 80-V DC/DC buck regulator that employs synchronous rectification to achieve high conversion efficiency in a small footprint. The EVM operates over a wide input voltage range of 6 V to 80 V to provide a regulated 5-V output at 400-kHz (...)
User guide: PDF | HTML
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Simulation model

LMR38010S-Q1 PSpice Transient Model

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Reference designs

TIDM-02017 — Two- and three-wheeler traction inverter reference design

TIDM-02017 is a 5kW 48V traction-inverter reference design which aims to provide a foundation for you to develop high-performance high-efficiency traction-inverter systems for 2-wheeler and 3-wheeler applications and help you get to market faster. The design features a F28P65x C2000™ (...)
Design guide: PDF
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