LMS36553QRNLTQ1

$6.33

Description：IC REG BUCK 3.3V 5.5A 22VQFN
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:4bf595ccc621 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LMS36553QRNLTQ1 is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC REG BUCK 3.3V 5.5A 22VQFN. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LMS36553QRNLTQ1

Description：IC REG BUCK 3.3V 5.5A 22VQFN
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：3.9V
Voltage - Input (Max)：36V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Current - Output：5.5A
Frequency - Switching：250kHz ~ 500kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Surface Mount, Wettable Flank
Package / Case：22-PowerVFQFN
Supplier Device Package：22-VQFN-HR (5x4)
Grade：Automotive
Qualification：AEC-Q100

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LMS36553QRNLTQ1

LMS36553QRNLTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMS36553QRNLTQ1 is a synchronous step-down DC-DC converter from Texas Instruments, designed for automotive applications with AEC-Q100 qualification. It operates within an input voltage range of 3.9 V to 36 V and delivers a fixed output of 3.3 V at up to 5.5 A. The device features a fixed switching frequency of 400 kHz and a low quiescent current of 7.5 uA. It supports junction temperatures from -40°C to +150°C and is housed in a 22-pin VQFN-HR package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated synchronous buck topology for high-efficiency power conversion
Automotive-grade reliability certified under AEC-Q100 standards
Extended thermal performance supporting operation up to 150°C junction temperature

Voltage Regulators - DC DC Switching Regulators Applications

Automotive infotainment system power distribution
Telematics control unit voltage regulation
Body control module power supply conditioning

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes to ensure correct output voltage and package configuration. Confirm AEC-Q100 compliance requirements match specific vehicle grade specifications. Check moisture sensitivity level handling procedures during assembly. Validate that the 22-VQFN-HR footprint matches the target PCB design constraints.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required for automotive loads. The 5.5 A current capability suits moderate power applications. Consider the 400 kHz frequency for balancing component size and efficiency. Ensure input voltage stays within the 3.9 V to 36 V operational window for stable regulation.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMS3655-Q1 family of synchronous buck converters. It shares architectural similarities with other members like the LMS3655NQRNLTQ1 but differs in fixed output voltage settings. The family targets robust automotive power management needs with integrated protection features.