LMR36503RS3QRPERQ1

$3.46

Description：IC REG BUCK 3.3V 300MA 9VQFN
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:41793d86b9b5 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LMR36503RS3QRPERQ1 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 300MA 9VQFN. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LMR36503RS3QRPERQ1

Description：IC REG BUCK 3.3V 300MA 9VQFN
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)：3V
Voltage - Input (Max)：65V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Current - Output：300mA
Frequency - Switching：200kHz ~ 2.2MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Surface Mount, Wettable Flank
Package / Case：9-PowerVFQFN
Supplier Device Package：9-VQFN-HR (2x2)
Grade：Automotive
Qualification：AEC-Q100

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LMR36503RS3QRPERQ1

LMR36503RS3QRPERQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR36503RS3QRPERQ1 is an automotive-grade synchronous step-down DC/DC converter from Texas Instruments. It operates with an input voltage range of 3 V to 65 V and provides a fixed 3 V output at up to 300 mA. The device features a low quiescent current of 4 uA and supports switching frequencies between 200 kHz and 2.2 MHz. It is housed in a compact VQFN-HR-9 package and functions within a temperature range of -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Automotive qualification compliant with AEC-Q100 standards for reliability
Wide input voltage capability supporting high-voltage systems
Compact footprint enabled by small VQFN-HR-9 packaging

Voltage Regulators - DC DC Switching Regulators Applications

Automotive infotainment system power distribution
ADAS sensor node power regulation
Body control module auxiliary power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix RS3Q confirms the fixed 3 V output configuration, as other variants offer adjustable or different fixed voltages. Ensure the PERQ1 designation matches the required tape-and-reel packaging format for automated assembly lines. Confirm that the VQFN-HR-9 package type aligns with the PCB land pattern design specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3 V rail is required for automotive applications. The wide input range accommodates load dump conditions common in vehicle electrical systems. The high operating temperature rating supports placement in engine compartments or near heat sources where standard industrial parts may fail.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LMR3650x-Q1 family of ultra-small synchronous buck converters designed specifically for automotive environments. The series emphasizes minimal external component count and high efficiency across varying load conditions. It serves as a key solution for space-constrained designs requiring robust power management in harsh operating conditions.