LMS3655NQRNLTQ1 The Texas Instruments LMS3655NQRNLTQ1 is a synchronous step-down switching regulator designed for automotive applications. It offers a 5.5A output current and a fixed 3.3V output voltage.
Mfr Part #:

LMS3655NQRNLTQ1

Available from 4 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments LMS3655NQRNLTQ1 is a synchronous step-down switching regulator designed for automotive applications. It offers a 5.5A output current and a fixed 3.3V output voltage.
✓ Total Stock: 7,056 pcs
$ Price Range: $4.03

LMS3655NQRNLTQ1 Available from 4 distributors

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LMS3655NQRNLTQ1 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
Duty Cycle
Efficiency
Frequency
Function
Junction Temperature
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Type
Output Voltage
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage

LMS3655NQRNLTQ1 Description

Short technical summary and product information.

The Texas Instruments LMS3655NQRNLTQ1 is a high-performance synchronous step-down converter optimized for automotive applications. It provides a fixed 3.3V output voltage and can deliver up to 5.5A of continuous load current.

 

This converter operates at a 400kHz switching frequency with a wide input voltage range up to 36V, and transient tolerance up to 42V, simplifying input surge protection designs. It features a peak efficiency of 96% when converting 12V to 5V, low EMI, and minimized switch node ringing. The device includes internal compensation, soft-start, current limit, thermal shutdown, and UVLO.

 

The LMS3655NQRNLTQ1 is AEC-Q100 qualified for automotive applications, with an ambient operating temperature range of -40°C to +125°C and a junction temperature range of -40°C to +150°C. It is available in a 22-VQFN-HR package with wettable flanks for surface mounting.

 

Key features include an automatic light load mode for improved efficiency, external frequency synchronization, and a RESET output with an internal filter and 3ms release timer, reducing the need for external monitoring components.

LMS3655NQRNLTQ1 Quick Information

Product Type: DC DC Switching Regulator
Canonical Name: LMS3655-Q1 Synchronous Step-Down Converter
Subcategory: Buck Converter

LMS3655NQRNLTQ1 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LMS3655NQRNLTQ1 Estimated Pricing

Qty Low High
1+ $4.03 $4.03

Estimated market price range - modelled values for guidance only, not live distributor offers.

LMS3655NQRNLTQ1 Features

  • Automotive AEC-Q100 qualified device.
  • 5.5A continuous output current capability.
  • Fixed 3.3V output voltage.
  • Wide input voltage range up to 36V.
  • High peak efficiency of 96%.

LMS3655NQRNLTQ1 Applications

  • Automotive USB charging systems.
  • Driver monitoring systems.
  • Surround view system ECUs.
  • Vehicle-to-vehicle communication.

LMS3655NQRNLTQ1 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the LMS3655NQRNLTQ1?

The input voltage range is 3.5V to 36V, with a transient tolerance up to 42V.

What are the output voltage options?

The device can be configured for a fixed 3.3V output, or adjustable from 1V to 20V.

What is the package type?

The device is available in a 22-VFQFN package (22-VQFN-HR 5x4) with wettable flank surface mount.

What is the operating temperature range?

The ambient operating temperature range is -40°C to 125°C, and the junction temperature range is -40°C to 150°C.

What is the switching frequency?

The nominal switching frequency is 400kHz, with a tolerance of ±10% (360kHz to 440kHz).

What is the typical quiescent current?

The quiescent current is typically 18µA at 3.3V output with no load.

What is the peak efficiency?

The peak efficiency is 96% for a 12V to 5V conversion.

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