Integrated Circuits (ICs)

LM5141QRGERQ1

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AUTOMOTIVE WIDE-INPUT 2.2-MHZ LOW-IQ SYNCHRONOUS BUCK CONTROLLER

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Search across all available documentation for this part.

DocumentsAn overview of radiated EMI specifications for power supplies An overview of conducted EMI specifications for power supplies +11

Integrated Circuits (ICs)

LM5141QRGERQ1

Active

Texas Instruments

AUTOMOTIVE WIDE-INPUT 2.2-MHZ LOW-IQ SYNCHRONOUS BUCK CONTROLLER

Deep-Dive with AI

DocumentsAn overview of radiated EMI specifications for power supplies An overview of conducted EMI specifications for power supplies +11

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM5141QRGERQ1

Clock Sync	False
Control Features	Current Limit, Power Good, Soft Start, Frequency Control, Enable
Frequency - Switching	440 kHz, 2.2 MHz
Function	Step-Down
Grade	Automotive
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	150 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	24-VFQFN Exposed Pad
Qualification	AEC-Q100
Supplier Device Package	24-VQFN (4x4)
Synchronous Rectifier	False
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	65 V
Voltage - Supply (Vcc/Vdd) [Min]	3.8 V

LM5141-Q1 Series

Automotive wide-input 2.2-MHz low-IQ synchronous buck controller

Part	Output Phases	Operating Temperature [Max]	Operating Temperature [Min]	Topology	Number of Outputs	Supplier Device Package	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Control Features	Function	Frequency - Switching	Mounting Type	Package / Case	Output Configuration	Grade	Qualification	Output Type	Voltage - Input [Max]	Voltage - Input [Min]	Supplied Contents	Regulator Topology	Current - Output	Voltage - Output	Outputs and Type	Outputs and Type	Utilized IC / Part	Main Purpose	Board Type
Texas Instruments LM5141QRGETQ1	1	150 °C	-40 °C	Buck	1	24-VQFN (4x4)	65 V	3.8 V	Current Limit Enable Frequency Control Power Good Soft Start	Step-Down	2.2 MHz 440 kHz	Surface Mount	24-VFQFN Exposed Pad	Positive	Automotive	AEC-Q100	Transistor Driver
Texas Instruments LM5141QURGERQ1	1	150 °C	-40 °C	Buck	1	24-VQFN (4x4)	65 V	3.8 V	Current Limit Enable Frequency Control Power Good Soft Start	Step-Down	2.2 MHz 440 kHz	Surface Mount	24-VFQFN Exposed Pad	Positive	Automotive	AEC-Q100	Transistor Driver
Texas Instruments LM5141QRGERQ1	1	150 °C	-40 °C	Buck	1	24-VQFN (4x4)	65 V	3.8 V	Current Limit Enable Frequency Control Power Good Soft Start	Step-Down	2.2 MHz 440 kHz	Surface Mount	24-VFQFN Exposed Pad	Positive	Automotive	AEC-Q100	Transistor Driver
Texas Instruments LM5141QRGEVM											2.2 MHz							42 V	5.5 V	Board(s)	Buck	5 A	5 V	Non-Isolated	1	LM5141-Q1	DC/DC Step Down	Fully Populated
Texas Instruments LM5141RGET	1	150 °C	-40 °C	Buck	1	24-VQFN (4x4)	65 V	3.8 V	Current Limit Enable Frequency Control Power Good Soft Start	Step-Down	2.2 MHz 440 kHz	Surface Mount	24-VFQFN Exposed Pad	Positive	Automotive	AEC-Q100	Transistor Driver

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	3000	$ 2.80
Texas Instruments	LARGE T&R	1	$ 3.84
		100	$ 3.13
		250	$ 2.46
		1000	$ 2.08

Description

General part information

LM5141-Q1 Series

The LM5141-Q1 is a synchronous buck controller, intended for high voltage wide VINstep-down converter applications. The control method is peak current mode control. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease-of-loop compensation. The LM5141-Q1 features slew rate control to simplify the compliance with CISPR and automotive EMI requirements.

The LM5141-Q1 has two selectable switching frequencies: 2.2 MHz and 440 kHz. Gate drivers with slew rate Control that can be adjusted to reduce EMI.

In light or no-load conditions, the LM5141-Q1 operates in skip cycle mode for improved low power efficiency. The LM5141-Q1 has a high voltage bias regulator with automatic switch-over to an external bias to reduce the IQcurrent from VIN. Additional features include frequency synchronization, cycle-by-cycle current limit, hiccup mode fault protection for sustained overload, and power good output.