LM2731XMFX The LM2731XMFX is a boost switching regulator from Texas Instruments with an adjustable output voltage up to 22V and a 1.8A switch current limit.
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LM2731XMFX

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Mfr Name: Texas Instruments
Texas Instruments
The LM2731XMFX is a boost switching regulator from Texas Instruments with an adjustable output voltage up to 22V and a 1.8A switch current limit.
✓ Total Stock: 38,468 pcs
$ Price Range: $0.16

LM2731XMFX Available from 1 distributor

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LM2731XMFX Specifications Quick View

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

LM2731XMFX Description

Short technical summary and product information.

The Texas Instruments LM2731XMFX is a current-mode boost switching regulator designed for applications requiring a step-up DC-DC conversion. It operates from an input voltage range of 2.7V to 14V and provides an adjustable output voltage from 1.23V up to 22V. The device features a 1.8A (maximum) internal DMOS FET switch and a typical switch current limit of 1.5A.

 

This regulator offers a choice of switching frequencies: 1.6 MHz for the X option and 0.6 MHz for the Y option, allowing designers to optimize for efficiency or component size. The maximum duty cycle is 93%, and the typical quiescent current is only 2 µA, making it suitable for battery-powered applications. The operating temperature range is -40°C to 125°C.

 

The LM2731XMFX is housed in a surface-mount SOT-23-5 package (also known as SC-74A, SOT-753), enabling compact PCB layouts. It is suitable for a variety of portable and industrial devices requiring a regulated boosted voltage from a lower input source.

LM2731XMFX Quick Information

Product Type: Boost Switching Regulator
Canonical Name: Texas Instruments LM2731XMFX Boost Switching Regulator
Subcategory: Switching Regulator

LM2731XMFX Compliance

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

LM2731XMFX Estimated Pricing

Qty Low High
1+ $0.16 $0.16

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

LM2731XMFX Features

  • Adjustable output voltage up to 22V.
  • 1.8A maximum internal switch current limit.
  • 1.6 MHz switching frequency for compact design.
  • 2 µA typical quiescent current.
  • Operates from 2.7V to 14V input supply.

LM2731XMFX Applications

  • Boost converter for battery-powered portable devices.
  • Suitable for generating LCD bias voltages.
  • Used in portable equipment requiring up to 22 V output.
  • Ideal for space-constrained power supply designs.

LM2731XMFX FAQs

6 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the LM2731XMFX?

The input voltage range is 2.7V minimum to 14V maximum.

What is the output voltage range of the LM2731XMFX?

The output voltage is adjustable from 1.23V minimum to 22V maximum.

What is the maximum switch current of the LM2731XMFX?

The maximum switch current limit is 1.8A, with a typical limit of 1.5A.

What is the operating temperature range of the LM2731XMFX?

The operating temperature range is -40°C to 125°C.

What package is the LM2731XMFX available in?

The LM2731XMFX is available in a SOT-23-5 surface-mount package (SC-74A, SOT-753).

What is the switching frequency of the LM2731XMFX?

The switching frequency is 1.6 MHz for the X option.

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