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LMS36553QRNLRQ1 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 LMS36553QRNLRQ1
- Description：IC REG BUCK 3.3V 5.5A 22VQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- 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 LMS36553QRNLRQ1
Voltage Regulators - DC DC Switching Regulators Overview
The LMS36553QRNLRQ1 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 utilizes 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 networks
Voltage Regulators - DC DC Switching Regulators Procurement Notes
Verify the suffix 'L' against the official datasheet to confirm pinout or functional variations compared to standard variants. Ensure the component meets specific automotive quality requirements by checking the manufacturer's certification documents. Confirm package dimensions match the design layout before finalizing procurement orders.
Voltage Regulators - DC DC Switching Regulators Selection Notes
Select this component when a fixed 3.3 V output is required for automotive loads drawing up to 5.5 A. The 400 kHz frequency allows for compact passive components while maintaining efficiency. Consider the 36 V maximum input rating for compatibility with standard automotive electrical systems.
Voltage Regulators - DC DC Switching Regulators Part Context
This part belongs to the LMS3655-Q1 family of high-current synchronous buck converters. The series is engineered for robust automotive environments, offering integrated protection features and high thermal performance in a compact footprint suitable for space-constrained electronic control units.
Voltage Regulators - DC DC Switching Regulators Replacement Considerations
Consult the official datasheet for direct pin-to-pin compatible alternatives within the LMS3655 series. Verify that any substitute maintains the same AEC-Q100 qualification and thermal characteristics.
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