LMR43620MC3RPERQ1

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Texas Instruments

AUTOMOTIVE, 3-V TO 36-V, 2-A LOW-EMI SYNCHRONOUS BUCK REGULATOR WITH LOW IQ

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LMR43620MC3RPERQ1

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Texas Instruments

AUTOMOTIVE, 3-V TO 36-V, 2-A LOW-EMI SYNCHRONOUS BUCK REGULATOR WITH LOW IQ

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Description Specifications Series Pricing CAD Documents

Description

General part information

LMR43620-Q1 Series

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.

Technical Specifications

Parameters and characteristics for this part

Specification	LMR43620MC3RPERQ1

Current - Output	2 A
Frequency - Switching (Max)	2.2 MHz
Frequency - Switching (Min)	200 kHz
Function	Step-Down
Grade	Automotive
Mounting Type	Wettable Flank, Surface Mount
Number of Outputs	1
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable (Fixed)
Package / Case	9-PowerVFQFN
Package Length	2 mm
Package Name	9-VQFN-HR
Package Width	2 mm
Qualification	AEC-Q100
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	36 V
Voltage - Input (Min)	3.6 V
Voltage - Output (Fixed Options)	3.3V
Voltage - Output (Max)	34.2 V
Voltage - Output (Min)	1 V

LMR43620-Q1 Series

Automotive, 3-V to 36-V, 2-A low-EMI synchronous buck regulator with low IQ

Part	Number of Outputs	Function	Voltage - Input (Min)	Mounting Type	Voltage - Input (Max)	Output Configuration	Package Length	Package Name	Package Width	Package / Case	Output Type	Voltage - Output (Max)	Frequency - Switching	Voltage - Output (Min)	Voltage - Output (Fixed Options)	Topology	Synchronous Rectifier	Current - Output	Operating Temperature (Min)	Operating Temperature (Max)	Grade	Qualification	Frequency - Switching (Max)	Frequency - Switching (Min)	Total Output Count	Non-Isolated Output Count	Supplied Contents	Board Type	Voltage - Output	Regulator Topology	Contents	Utilized IC / Part	Main Purpose	Voltage - Input (Maximum)	Voltage - Input (Minimum)
Texas Instruments LMR43620MC5RPERQ1	1	Step-Down	3 V	Surface Mount Wettable Flank	36 V	Positive	2 mm	9-VQFN-HR	2 mm	9-PowerVFQFN	Adjustable (Fixed)	34.2 V	2.2 MHz	1 V	5V	Buck	Yes	2 A	-40 °C	150 °C
Texas Instruments LMR43620RS5QRPERQ1	1	Step-Down	3 V	Surface Mount Wettable Flank	36 V	Positive	2 mm	9-VQFN-HR	2 mm	9-PowerVFQFN	Adjustable (Fixed)	34.2 V		1 V	5V	Buck	Yes	2 A	-40 °C	150 °C	Automotive	AEC-Q100	2.2 MHz	200 kHz
Texas Instruments LMR43620R5RPER	1	Step-Down	3 V	Surface Mount Wettable Flank	36 V	Positive	2 mm	9-VQFN-HR	2 mm	9-PowerVFQFN	Adjustable (Fixed)	34.2 V		1 V	5V	Buck	Yes	2 A	-40 °C	150 °C			2.2 MHz	200 kHz
Texas Instruments LMR43620MB5RPER	1	Step-Down	3 V	Surface Mount Wettable Flank	36 V	Positive	2 mm	9-VQFN-HR	2 mm	9-PowerVFQFN	Adjustable (Fixed)	34.2 V	1 MHz	1 V	5V	Buck	Yes	2 A	-40 °C	150 °C
Texas Instruments LMR43620MSC3RPERQ1	1	Step-Down	3 V	Surface Mount Wettable Flank	36 V	Positive	2 mm	9-VQFN-HR	2 mm	9-PowerVFQFN	Adjustable (Fixed)	34.2 V	2.2 MHz	1 V	3.3V	Buck	Yes	2 A	-40 °C	150 °C	Automotive	AEC-Q100
Texas Instruments LMR43620RQ5EVM-400											Non-Isolated		400 kHz					2 A							1	1 count	Board(s)	Fully Populated	5 VDC	Buck	Board	LMR43620-Q1	DC/DC Step Down	36 V	3 V
Texas Instruments LMR43620MSC5RPERQ1	1	Step-Down	3 V	Surface Mount Wettable Flank	36 V	Positive	2 mm	9-VQFN-HR	2 mm	9-PowerVFQFN	Adjustable (Fixed)	34.2 V	2.2 MHz	1 V	5V	Buck	Yes	2 A	-40 °C	150 °C	Automotive	AEC-Q100
Texas Instruments LMR43620RS3QRPERQ1	1	Step-Down	3 V	Surface Mount Wettable Flank	36 V	Positive	2 mm	9-VQFN-HR	2 mm	9-PowerVFQFN	Adjustable (Fixed)	34.2 V		1 V	3.3V	Buck	Yes	2 A	-40 °C	150 °C	Automotive	AEC-Q100	2.2 MHz	200 kHz
Texas Instruments LMR43620MQ3EVM-2M											Non-Isolated		2.2 MHz					2 A							1	1 count	Board(s)	Fully Populated	3.3 V	Buck	Board	LMR43620-Q1	DC/DC Step Down	36 V	3 V