Specification	LMR43610RS5QRPERQ1

Current - Output	1 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
Qualification	AEC-Q100
Supplier Device Package	9-VQFN-HR (2x2)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	36 V
Voltage - Input (Min) [Min]	3 V
Voltage - Output (Max) [Max]	34.2 V
Voltage - Output (Min/Fixed)	5 V
Voltage - Output (Min/Fixed) [Min]	1 V

LMR43610-Q1 Series

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

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Bulk	1	$ 2.38
		100	$ 2.09
		1000	$ 1.48
Texas Instruments	LARGE T&R	1	$ 2.38
		100	$ 2.09
		250	$ 1.46
		1000	$ 1.18

Description

General part information

LMR43610-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.