LMR43610-Q1 Series

Automotive 3-V to 36-V, 1-A, low-EMI synchronous buck regulator with low IQ

Catalog

Automotive 3-V to 36-V, 1-A, low-EMI synchronous buck regulator with low IQ

Part	Frequency - Switching [Max]	Frequency - Switching [Min]	Topology	Supplier Device Package	Package / Case	Number of Outputs	Function	Mounting Type	Voltage - Output (Max) [Max]	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Qualification	Voltage - Output (Min/Fixed)	Voltage - Output (Min/Fixed) [Min]	Voltage - Input (Max) [Max]	Output Configuration	Current - Output	Grade	Voltage - Input (Min) [Min]	Voltage - Output (Min/Fixed)	Frequency - Switching
Texas Instruments LMR43610RS5QRPERQ1	2.2 MHz	200 kHz	Buck	9-VQFN-HR (2x2)	9-PowerVFQFN	1	Step-Down	Surface Mount Wettable Flank	34.2 V	Adjustable (Fixed)	150 °C	-40 °C	AEC-Q100	5 V	1 V	36 V	Positive	1 A	Automotive	3 V
Texas Instruments LMR43610RS3QRPERQ1	2.2 MHz	200 kHz	Buck	9-VQFN-HR (2x2)	9-PowerVFQFN	1	Step-Down	Surface Mount Wettable Flank	34.2 V	Adjustable (Fixed)	150 °C	-40 °C	AEC-Q100	1 V		36 V	Positive	1 A	Automotive	3 V	3.3 V
Texas Instruments LMR43610MB3RPER			Buck	9-VQFN-HR (2x2)	9-PowerVFQFN	1	Step-Down	Surface Mount Wettable Flank	34.2 V	Adjustable (Fixed)	150 °C	-40 °C		1 V		36 V	Positive	1 A		3 V	3.3 V	1 MHz
Texas Instruments LMR43610MSC3RPERQ1			Buck	9-VQFN-HR (2x2)	9-PowerVFQFN	1	Step-Down	Surface Mount Wettable Flank	34.2 V	Adjustable (Fixed)	150 °C	-40 °C	AEC-Q100	1 V		36 V	Positive	1 A	Automotive	3 V	3.3 V	2.2 MHz
Texas Instruments LMR43610MSC5RPERQ1			Buck	9-VQFN-HR (2x2)	9-PowerVFQFN	1	Step-Down	Surface Mount Wettable Flank	34.2 V	Adjustable (Fixed)	150 °C	-40 °C	AEC-Q100	5 V	1 V	36 V	Positive	1 A	Automotive	3 V		2.2 MHz

Catalog

Automotive 3-V to 36-V, 1-A, low-EMI synchronous buck regulator with low IQ

Key Features

• AEC-Q100-qualified for automotive applications:Temperature grade 1: –40°C to +125°C, TAFunctional Safety-CapableDocumentation available to aid functional safety system designGreater than 85% efficiency at 1mA1.2µA total non-switching IQ at 13.5VIN, fixed 3.3VOUTMiniature design size and low component cost2mm × 2mm HotRod™ package with wettable flanksInternal compensationOptimized for ultra-low EMI requirementsSpread spectrum reduces peak emissionsMeets CISPR25 Class 5 standardPin selectable FPWM mode for constant frequency at light loads with MODE/SYNC pinFSW synchronization with MODE/SYNC pinDesigned for automotive applications–40°C to +150°C junction temperature rangeSupports 42V automotive load dumpSupports 3VIN for automotive cold crankAdjustable up to 95% of VIN, 3.3V and 5V fixed VOUT options availableDesigned for scalable power supplies200kHz to 2.2MHz (RT pin) adjustable FSWPin compatible with:LMR36506-Q1(65V, 600mA)LMR36503-Q1(65V, 30mA)AEC-Q100-qualified for automotive applications:Temperature grade 1: –40°C to +125°C, TAFunctional Safety-CapableDocumentation available to aid functional safety system designGreater than 85% efficiency at 1mA1.2µA total non-switching IQ at 13.5VIN, fixed 3.3VOUTMiniature design size and low component cost2mm × 2mm HotRod™ package with wettable flanksInternal compensationOptimized for ultra-low EMI requirementsSpread spectrum reduces peak emissionsMeets CISPR25 Class 5 standardPin selectable FPWM mode for constant frequency at light loads with MODE/SYNC pinFSW synchronization with MODE/SYNC pinDesigned for automotive applications–40°C to +150°C junction temperature rangeSupports 42V automotive load dumpSupports 3VIN for automotive cold crankAdjustable up to 95% of VIN, 3.3V and 5V fixed VOUT options availableDesigned for scalable power supplies200kHz to 2.2MHz (RT pin) adjustable FSWPin compatible with:LMR36506-Q1(65V, 600mA)LMR36503-Q1(65V, 30mA)

Description

The LMR436x0-Q1 is the industry smallest 36V, 2A, and 1A synchronous step-down DC/DC converters in a 2mm × 2mm HotRod package. This easy-to-use converter supports a wide input voltage range of 3.0V to 36V with transients up to 42V. The LMR43620-Q1 is specifically designed to meet low standby power requirements for always on, automotive applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of 1.5µA at 13.5VIN and high light load efficiency. A seamless transition between PWM and PFM modes along with very low MOSFET ON resistances provide exceptional efficiency across the entire load range. The control architecture and feature set are designed for an ultra-small design size. The device uses peak current mode control to minimize output capacitance. The LMR436x0-Q1 minimizes input filter size by using dual random spread spectrum, a low-EMI HotRod package, and an optimized pinout. The MODE/SYNC and RT pin variants can be used to set or synchronize the frequency between 200kHz and 2.2MHz to avoid noise sensitive frequency bands. The rich feature set of the LMR436x0-Q1 is designed to simplify implementation for a wide range of automotive end equipments. The LMR436x0-Q1 is the industry smallest 36V, 2A, and 1A synchronous step-down DC/DC converters in a 2mm × 2mm HotRod package. This easy-to-use converter supports a wide input voltage range of 3.0V to 36V with transients up to 42V. The LMR43620-Q1 is specifically designed to meet low standby power requirements for always on, automotive applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of 1.5µA at 13.5VIN and high light load efficiency. A seamless transition between PWM and PFM modes along with very low MOSFET ON resistances provide exceptional efficiency across the entire load range. The control architecture and feature set are designed for an ultra-small design size. The device uses peak current mode control to minimize output capacitance. The LMR436x0-Q1 minimizes input filter size by using dual random spread spectrum, a low-EMI HotRod package, and an optimized pinout. The MODE/SYNC and RT pin variants can be used to set or synchronize the frequency between 200kHz and 2.2MHz to avoid noise sensitive frequency bands. The rich feature set of the LMR436x0-Q1 is designed to simplify implementation for a wide range of automotive end equipments.