LMR43606-Q1 Series

Automotive, 36V, 600mA synchronous step-down converter with 4uA IQ and high light load efficiency

Catalog

Automotive, 36V, 600mA synchronous step-down converter with 4uA IQ and high light load efficiency

Part	Voltage - Input (Max) [Max]	Current - Output	Voltage - Input (Min) [Min]	Function	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Voltage - Output (Min/Fixed)	Voltage - Output (Min/Fixed) [Min]	Topology	Frequency - Switching	Number of Outputs	Supplier Device Package	Package / Case	Output Type	Output Configuration	Voltage - Output (Max) [Max]	Frequency - Switching [Max]	Frequency - Switching [Min]	Voltage - Output (Min/Fixed)
Texas Instruments LMR43606MSC5RPERQ1	36 V	600 mA	3 V	Step-Down	-40 °C	125 °C	Surface Mount Wettable Flank	5 V	1 V	Buck	2.2 MHz	1	9-VQFN-HR (2x2)	9-VFQFN	Adjustable (Fixed)	Positive	34.2 V
Texas Instruments LMR43606RS3RPERQ1	36 V	600 mA	3 V	Step-Down	-40 °C	125 °C	Surface Mount Wettable Flank	1 V		Buck		1	9-VQFN-HR (2x2)	9-VFQFN	Adjustable (Fixed)	Positive	34.2 V	2.2 MHz	200 kHz	3.3 V
Texas Instruments LMR43606MSC3RPERQ1	36 V	600 mA	3 V	Step-Down	-40 °C	125 °C	Surface Mount Wettable Flank	1 V		Buck	2.2 MHz	1	9-VQFN-HR (2x2)	9-VFQFN	Adjustable (Fixed)	Positive	34.2 V			3.3 V

Catalog

Automotive, 36V, 600mA synchronous step-down converter with 4uA IQ and high light load efficiency

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 1mAMiniature design size and low component cost2mm × 2mm HotRod™ package with wettable flanksInternal compensationDesigned for ultra-low EMI requirementsSpread spectrum reduces peak emissionsPin 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 3-VIN for automotive cold crankAdjustable up to 95% of VIN, 3.3V and 5V fixed VOUT options availableDesigned for scalable power suppliesAdjustable FSW: 200kHz to 2.2MHz (RT pin)Pin compatible with:LMR43610-Q1(36V, 1A)LMR36506-Q1(65V, 600mA)LMR36503-Q1(65V, 300mA)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 1mAMiniature design size and low component cost2mm × 2mm HotRod™ package with wettable flanksInternal compensationDesigned for ultra-low EMI requirementsSpread spectrum reduces peak emissionsPin 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 3-VIN for automotive cold crankAdjustable up to 95% of VIN, 3.3V and 5V fixed VOUT options availableDesigned for scalable power suppliesAdjustable FSW: 200kHz to 2.2MHz (RT pin)Pin compatible with:LMR43610-Q1(36V, 1A)LMR36506-Q1(65V, 600mA)LMR36503-Q1(65V, 300mA)

Description

The LMR43606-Q1 is a small, 36V, 0.6A, synchronous step-down DC/DC converter 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 LMR43606-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 LMR43606-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 LMR43606-Q1 is designed to simplify implementation for a wide range of automotive end equipments. The LMR43606-Q1 is a small, 36V, 0.6A, synchronous step-down DC/DC converter 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 LMR43606-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 LMR43606-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 LMR43606-Q1 is designed to simplify implementation for a wide range of automotive end equipments.