LMR51430YFDDCR

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Texas Instruments

CONV DC-DC 4.5V TO 36V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.6V TO 34.2V 3A 6-PIN TSOT-23 T/R

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LMR51430YFDDCR

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Texas Instruments

CONV DC-DC 4.5V TO 36V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.6V TO 34.2V 3A 6-PIN TSOT-23 T/R

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Description Specifications Series Pricing CAD Documents

Description

General part information

LMR51430 Series

The LMR51430 is a wide-VIN, easy-to-use SIMPLE SWITCHER power converter synchronous buck converter capable of driving up to 3-A load current. With a wide input range of 4.5 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR51430 operates at 500-kHz and 1.1-MHz switching frequency to support use of relatively small inductors for an optimized solution size. The device has a PFM version to realize high efficiency at light load and FPWM version to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimum external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR51430 is available in a 6-pin SOT-23 package.

Technical Specifications

Parameters and characteristics for this part

Specification	LMR51430YFDDCR

Current - Output	3 A
Frequency - Switching	1.1 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	TSOT-23-6, SOT-23-6 Thin
Package Name	SOT-23-THIN
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	36 V
Voltage - Input (Min)	4.5 V
Voltage - Output (Max)	34.2 V
Voltage - Output (Min/Fixed)	0.6 V

LMR51430 Series

Part	Function	Frequency - Switching	Voltage - Input (Min)	Synchronous Rectifier	Current - Output	Package Name	Output Configuration	Package / Case	Number of Outputs	Operating Temperature (Min)	Operating Temperature (Max)	Voltage - Input (Max)	Output Type	Voltage - Output (Max)	Voltage - Output (Min/Fixed)	Topology	Mounting Type
Texas Instruments LMR51430XFDDCR	Step-Down	500 kHz	4.5 V	Yes	3 A	SOT-23-THIN	Positive	SOT-23-6 Thin TSOT-23-6	1	-40 °C	150 °C	36 V	Adjustable	34.2 V	0.6 V	Buck	Surface Mount
Texas Instruments LMR51430YDDCR	Step-Down	1.1 MHz	4.5 V	Yes	3 A	SOT-23-THIN	Positive	SOT-23-6 Thin TSOT-23-6	1	-40 °C	150 °C	36 V	Adjustable	34.2 V	0.6 V	Buck	Surface Mount
Texas Instruments LMR51430YFDDCR	Step-Down	1.1 MHz	4.5 V	Yes	3 A	SOT-23-THIN	Positive	SOT-23-6 Thin TSOT-23-6	1	-40 °C	150 °C	36 V	Adjustable	34.2 V	0.6 V	Buck	Surface Mount
Texas Instruments LMR51430XDDCR	Step-Down	500 kHz	4.5 V	Yes	3 A	SOT-23-THIN	Positive	SOT-23-6 Thin TSOT-23-6	1	-40 °C	150 °C	36 V	Adjustable	34.2 V	0.6 V	Buck	Surface Mount

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LMR51430YFDDCR | Datasheet

LMR514x0 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA

LMR51430 SIMPLE SWITCHER® Power Converter 4.5-V to 36-V, 3-A, Synchronous Buck Converter in a SOT-23 Package datasheet (Rev. A)

LMR51430EVM EU RoHS Declaration of Conformity (DoC)

LMR51430 Buck Regulator Evaluation Module User's Guide