LMR38010-Q1 Series

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

Catalog

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

Part	Function	Number of Outputs	Voltage - Input (Max) [Max]	Supplier Device Package	Output Type	Voltage - Output (Max) [Max]	Current - Output	Frequency - Switching [Max]	Frequency - Switching [Min]	Package / Case [y]	Package / Case [x]	Package / Case	Mounting Type	Voltage - Input (Min) [Min]	Topology	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Output Configuration	Grade	Qualification
Texas Instruments LMR38010FDDAR	Step-Down	1	80 V	8-SO PowerPad	Adjustable	75 V	1 A	2.2 MHz	200 kHz	3.9 mm	0.154 in	8-PowerSOIC	Surface Mount	4.2 V	Buck	1 V	150 °C	-40 °C	Positive
Texas Instruments LMR38010FSDDAR	Step-Down	1	80 V	8-SO PowerPad	Adjustable	75 V	1 A	2.2 MHz	200 kHz	3.9 mm	0.154 in	8-PowerSOIC	Surface Mount	4.2 V	Buck	1 V	150 °C	-40 °C	Positive
Texas Instruments LMR38010SDDAR	Step-Down	1	80 V	8-SO PowerPad	Adjustable	75 V	1 A	2.2 MHz	200 kHz	3.9 mm	0.154 in	8-PowerSOIC	Surface Mount	4.2 V	Buck	1 V	150 °C	-40 °C	Positive
Texas Instruments LMR38010SQDDARQ1	Step-Down	1	80 V	8-SO PowerPad	Adjustable	75 V	1 A	2.2 MHz	200 kHz	3.9 mm	0.154 in	8-PowerSOIC	Surface Mount	4.2 V	Buck	1 V	125 °C	-40 °C	Positive	Automotive	AEC-Q100

Catalog

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

Key Features

• AEC-Q100 qualified for automotive applicationsTemperature grade 1: –40°C to +125°C, TAFunctional Safety-CapableDocumentation available to aid functional safety system designConfigured for rugged automotive applications4.2V to 80V input voltage range1A continuous output currentUltra-low 40µA operating quiescent current> 1.5mm distance between VIN and GND pin200kHz to 2.2MHz adjustable switching frequencyFrequency synchronization to external clockSpread spectrum for reduced EMI97% maximum duty cycleSupport start-up with prebiased output±1.0% tolerance voltage reference at room temperaturePrecision enableEasy to use device with integrated compensation network enabling low BOM countIntegrated synchronous rectification8-pin HSOIC with PowerPAD™ integrated circuit packagePFM and forced PWM (FPWM) optionsAvailable in 2A,LMR38020-Q1Create a custom design using the LMR38010-Q1 with theWEBENCH Power DesignerAEC-Q100 qualified for automotive applicationsTemperature grade 1: –40°C to +125°C, TAFunctional Safety-CapableDocumentation available to aid functional safety system designConfigured for rugged automotive applications4.2V to 80V input voltage range1A continuous output currentUltra-low 40µA operating quiescent current> 1.5mm distance between VIN and GND pin200kHz to 2.2MHz adjustable switching frequencyFrequency synchronization to external clockSpread spectrum for reduced EMI97% maximum duty cycleSupport start-up with prebiased output±1.0% tolerance voltage reference at room temperaturePrecision enableEasy to use device with integrated compensation network enabling low BOM countIntegrated synchronous rectification8-pin HSOIC with PowerPAD™ integrated circuit packagePFM and forced PWM (FPWM) optionsAvailable in 2A,LMR38020-Q1Create a custom design using the LMR38010-Q1 with theWEBENCH Power Designer

Description

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.