LMQ66420R5RXBR

$2.55

Description：IC REG BUCK ADJ/1V 2A 14VQFN
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:db0e4f92eb3a Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LMQ66420R5RXBR 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 ADJ/1V 2A 14VQFN. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LMQ66420R5RXBR

Description：IC REG BUCK ADJ/1V 2A 14VQFN
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable (Fixed)
Number of Outputs：1
Voltage - Input (Min)：3V
Voltage - Input (Max)：36V
Voltage - Output (Min/Fixed)：1V (5V)
Voltage - Output (Max)：18V
Current - Output：2A
Frequency - Switching：200kHz ~ 2.2MHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount, Wettable Flank
Package / Case：14-PowerTFQFN
Supplier Device Package：14-VQFN (2.6x2.6)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LMQ66420R5RXBR

LMQ66420R5RXBR

Voltage Regulators - DC DC Switching Regulators Overview

The LMQ66420R5RXBR is a synchronous step-down converter from Texas Instruments featuring a 36 V input voltage range and a 2 A output current capability. It operates with a switching frequency between 200 kHz and 2.2 MHz and delivers a fixed 1 V output. The device maintains a quiescent current of 250 nA and supports junction temperatures up to 150°C. Packaged in a 14-pin VQFN-FCRLF (RXB) format, it integrates low-EMI design features for efficient power management.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Low electromagnetic interference architecture
High efficiency synchronous rectification
Extended thermal operation capability

Voltage Regulators - DC DC Switching Regulators Applications

Industrial control systems
Automotive electronics
Point-of-load regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix RXB confirms the 14-pin VQFN-FCRLF package configuration. Ensure the fixed 1 V output variant matches the system requirement. Confirm RoHS3 compliance status if environmental regulations apply. Check moisture sensitivity levels for proper storage handling procedures before assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 36 V input rail requires conversion to a stable 1 V output at 2 A. The wide operating temperature range suits harsh environments. The adjustable switching frequency allows optimization for size or noise performance. Verify that the low-EMI characteristics meet the specific electromagnetic compatibility standards of the target application.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LMQ664x0 family, which includes 1-A, 2-A, and 3-A variants. These devices share common architectural features such as high input voltage tolerance and low quiescent current. The LMQ66420 specifically targets applications requiring moderate current capacity within a compact footprint.