LMR14050SQDDARQ1

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Texas Instruments

SIMPLE SWITCHER® AUTOMOTIVE 40V, 5A, 2.2MHZ STEP-DOWN CONVERTER WITH 40UA IQ

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LMR14050SQDDARQ1

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Texas Instruments

SIMPLE SWITCHER® AUTOMOTIVE 40V, 5A, 2.2MHZ STEP-DOWN CONVERTER WITH 40UA IQ

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Description Specifications Series Pricing CAD Documents

Description

General part information

LMR14050 Series

The LMR14050-Q1 is a 40V, 5A step down regulator with an integrated high-side MOSFET. With a wide input range from 4V to 40V, the device is designed for various applications from industrial to automotive for power conditioning from unregulated sources. An extended family is available in 2A and 3.5A options in pin-to-pin compatible packages, including LMR14020-Q1 and LMR14030-Q1. The regulator quiescent current is 40µA in sleep mode, which is designed for battery powered systems. An ultra-low 1µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This feature also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.

The LMR14050-Q1 is available in an 8-pin HSOIC or 10-pin WSON package with exposed pad for low thermal resistance.

Technical Specifications

Parameters and characteristics for this part

Specification	LMR14050SQDDARQ1

Current - Output	5 A
Frequency - Switching (Max)	2.5 MHz
Frequency - Switching (Min)	200 kHz
Function	Step-Down
Grade	Automotive
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package Length	0.154 in
Package Name	8-SO PowerPad, 8-PowerSOIC
Package Width	3.9 mm
Qualification	AEC-Q100
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	40 V
Voltage - Input (Min)	4 V
Voltage - Output (Max)	28 V
Voltage - Output (Min/Fixed)	0.8 V

LMR14050 Series

Part	Supplied Contents	Total Output Count	Output Type	Non-Isolated Output Count	Board Type	Regulator Topology	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Voltage - Output	Voltage - Output	Voltage - Output (Option 2)	Voltage - Output (Option 1)	Utilized IC / Part	Contents	Main Purpose	Frequency - Switching	Current - Output	Package Name	Number of Outputs	Voltage - Input (Min)	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Synchronous Rectifier	Mounting Type	Function	Output Configuration	Package Width	Package Length	Topology	Operating Temperature (Max)	Operating Temperature (Min)	Qualification	Frequency - Switching (Max)	Frequency - Switching (Min)	Voltage - Output (Max)	Grade	Package / Case
Texas Instruments LMR14050SEVM	Board(s)	1	Non-Isolated	1 count	Fully Populated	Buck	7 V	36 V	3.3 V 5 VDC	3.3V 5V	5 V	3.3 V	LMR14050S	Board	DC/DC Step Down	400 kHz	5 A
Texas Instruments LMR14050SQDDARQ1			Adjustable														5 A	8-PowerSOIC 8-SO PowerPad	1	4 V	40 V	0.8 V	No	Surface Mount	Step-Down	Positive	3.9 mm	0.154 in	Buck	125 °C	-40 °C	AEC-Q100	2.5 MHz	200 kHz	28 V	Automotive
Texas Instruments LMR14050SDDAR			Adjustable														5 A	8-PowerSOIC 8-SO PowerPad	1	4 V	40 V	0.8 V	No	Surface Mount	Step-Down	Positive	3.9 mm	0.154 in	Buck	125 °C	-40 °C		2.5 MHz	200 kHz	28 V
Texas Instruments LMR14050SQDDAQ1			Adjustable														5 A	8-PowerSOIC 8-SO PowerPad	1	4 V	40 V	0.8 V	No	Surface Mount	Step-Down	Positive	3.9 mm	0.154 in	Buck	125 °C	-40 °C	AEC-Q100	2.5 MHz	200 kHz	28 V	Automotive
Texas Instruments LMR14050SQDPRRQ1			Adjustable														5 A	10-WSON	1	4 V	40 V	0.8 V	No	Surface Mount	Step-Down	Positive	4 mm	4 mm	Buck	125 °C	-40 °C	AEC-Q100	2.5 MHz	200 kHz	28 V	Automotive	10-WDFN Exposed Pad
Texas Instruments LMR14050SSQDDAQ1			Adjustable														5 A	8-PowerSOIC 8-SO PowerPad	1	4 V	40 V	0.8 V	No	Surface Mount	Step-Down	Positive	3.9 mm	0.154 in	Buck	125 °C	-40 °C	AEC-Q100	2.5 MHz	200 kHz	28 V	Automotive
Texas Instruments LMR14050QDPRRQ1			Adjustable														5 A	10-WSON	1	4 V	40 V	0.8 V	No	Surface Mount	Step-Down	Positive	4 mm	4 mm	Buck	125 °C	-40 °C	AEC-Q100	2.5 MHz	200 kHz	28 V	Automotive	10-WDFN Exposed Pad
Texas Instruments LMR14050QDPRTQ1			Adjustable														5 A	10-WSON	1	4 V	40 V	0.8 V	No	Surface Mount	Step-Down	Positive	4 mm	4 mm	Buck	125 °C	-40 °C	AEC-Q100	2.5 MHz	200 kHz	28 V	Automotive	10-WDFN Exposed Pad
Texas Instruments LMR14050SSQDDARQ1			Adjustable														5 A	8-PowerSOIC 8-SO PowerPad	1	4 V	40 V	0.8 V	No	Surface Mount	Step-Down	Positive	3.9 mm	0.154 in	Buck	125 °C	-40 °C	AEC-Q100	2.5 MHz	200 kHz	28 V	Automotive
Texas Instruments LMR14050SDDA			Adjustable														5 A	8-PowerSOIC 8-SO PowerPad	1	4 V	40 V	0.8 V	No	Surface Mount	Step-Down	Positive	3.9 mm	0.154 in	Buck	125 °C	-40 °C		2.5 MHz	200 kHz	28 V