Texas Instruments

LM2731XMFX/NOPB

Power Management

Manufacturer
MPN
LM2731XMFX/NOPB
Product Type
Package / Case
SOT-23-5
Key Attributes
1.6 MHz Fixed-Frequency Boost Converter

Technical Specifications

TypeDescription
Output TypeAdjustable
Output Current1.8 A
FunctionBoost
Switching Freq Hz1.6 MHz
Channels1
Quiescent Current2 mA
Switch Tube (built-in/external)Built-in
TypeDescription
Operating Temperature-40°C~+125°C@(TJ)
FeaturesCycle-by-cycle current limiting;Overcurrent Protection
TopologyBoost
Supply Voltage2.7V~14V
Output Voltage2.7V~22V
Package / CaseSOT-23-5

Product Introduction

The LM2731 switching regulators are current-mode boost converters operating at fixed frequencies of 1.6 MHz (X option) and 600 kHz (Y option).

The use of SOT-23 package, made possible by the minimal power loss of the internal 1.8-A switch, and use of small inductors and capacitors result in the highest power density of the industry. The 22-V internal switch makes these solutions perfect for boosting to voltages up to 20 V.

These parts have a logic-level shutdown pin that can reduce quiescent current and extend battery life.

Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies design and reduces component count.

Features

  • 22-V DMOS FET Switch
  • 1.6-MHz (X Option), 0.6-MHz (Y Option) Switching Frequency
  • Low RDS(ON) DMOS FET Switch Current Up to 1.8 A
  • Wide Input Voltage Range (2.7 V to 14 V)
  • Low Shutdown Current (<1 μA)
  • 5-Lead SOT-23 Package
  • Uses Tiny Capacitors and Inductors
  • Cycle-by-Cycle Current Limiting
  • Internally Compensated

Applications

  • White LED Current Sources
  • PDAs and Palm-Top Computers
  • Digital Cameras
  • Portable Phones and Games Local Boost Regulators

Datasheet

📄 Open Download

Alternative Parts

Common LM2731XMFX/NOPB alternatives overseas buyers search for:

Compliance & Export Codes

TypeDetails
RoHSROHS3
ECCNEAR99
CNHTS8542399000
USHTS8542390001
TARIC8542399000
TypeDetails
CAHTS8542390000
BRHTS85423999
INHTS85423900
MXHTS8542.39.99

Sourcing Information

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