LMR51603XFQDBVRQ1

$0.89

Description：4.5V-TO-65V 0.3A SYNCHRONOUS BUC
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:2e228f23b658 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LMR51603XFQDBVRQ1 is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is 4.5V-TO-65V 0.3A SYNCHRONOUS BUC. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LMR51603XFQDBVRQ1

Description：4.5V-TO-65V 0.3A SYNCHRONOUS BUC
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：4V
Voltage - Input (Max)：65V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：28V
Current - Output：300mA
Frequency - Switching：400kHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Package / Case：SOT-23-6
Supplier Device Package：SOT-23-6
Grade：Automotive
Qualification：AEC-Q100

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LMR51603XFQDBVRQ1

LMR51603XFQDBVRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR51603XFQDBVRQ1 is an automotive-grade synchronous buck converter from Texas Instruments. It supports a wide input voltage range of 4V to 65V and delivers up to 300mA output current. The device features adjustable output voltage from 800mV to 28V with a fixed switching frequency of 1.1MHz. Operating junction temperature ranges from -40°C to +150°C, housed in a SOT-23-6 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Automotive qualified for rugged industrial applications
Wide input voltage range supporting diverse power sources
Integrated synchronous rectification for high efficiency
Functional safety capable with supporting documentation

Voltage Regulators - DC DC Switching Regulators Applications

Automotive infotainment systems
Telematics control units
Body electronics modules
Industrial sensor nodes

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the Q1 suffix confirms AEC-Q100 qualification. Confirm the XF suffix matches required tape-and-reel specifications. Ensure design reviews address functional safety requirements if utilizing safety-related features. Validate thermal performance within the specified operating temperature range.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when automotive reliability and wide input voltage are critical. The 300mA limit suits low-power loads. Compare against non-automotive variants if cost is primary. Verify package compatibility with existing PCB footprints. Consider thermal management needs for the small SOT-23-6 enclosure.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LMR51603-Q1 family of wide-VIN synchronous buck converters. It shares core topology with standard LMR51603 devices but includes enhanced durability and qualification for automotive environments. The family emphasizes ease of use and compact form factors for space-constrained designs.