LM2731

ACTIVE

0.6/1.6 MHz Boost Converters With 22V Internal FET Switch in SOT-23

Top

Product details

Parameters

Vin (Min) (V) 2.7 Vin (Max) (V) 14 Vout (Min) (V) 1.23 Vout (Max) (V) 22 Switch current limit (Typ) (A) 1.5 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 1600 Iq (Typ) (mA) 2 Features Enable Duty cycle (Max) (%) 93 Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Boost converters (integrated switch)

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Boost converters (integrated switch)

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
open-in-new Find other Boost converters (integrated switch)

Description

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.

open-in-new Find other Boost converters (integrated switch)
Download
Similar products you might be interested in
open-in-new Compare products
Same functionality and pinout but is not an equivalent to the compared device:
LM2733 ACTIVE 0.6/1.6 MHz Boost Converters With 40V Internal FET Switch in SOT-23 40-V, 1-A internal FET SOT-23 package.
LM2735 ACTIVE 520kHz/1.6MHz space efficient boost and SEPIC DC-DC regulator Increased switch current at 2.1 A.
LM2735-Q1 ACTIVE 520kHz/1.6MHz space eEfficient boost and SEPIC DC-DC regulator, AEC-Q100 qualified Increased switch current at 2.1 A.

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet LM2731 0.6/1.6-MHz Boost Converters With 22-V Internal FET Switch in SOT-23 datasheet (Rev. G) Sep. 30, 2015
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
User guides AN-1280 LM2731/LM2733 Evaluation Board (Rev. B) Apr. 24, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
25
Description

LM2731X 1.6 MHz Boost Converter With 22V Internal FET Switch

Features
  • 22 V DMOS FET switch
  • 1.6 MHz switching frequency
  • Low RDS(ON) DMOS FET
  • Switch current up to 1.8 A
  • Wide input voltage range (2.7 V-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 (...)
EVALUATION BOARDS Download
document-generic User guide
25
Description

LM2731Y 0.6 MHz Boost Converter With 22 V Internal FET Switch

Features
  • 22 V DMOS FET switch
  • 0.6 MHz switching frequency
  • Low RDS(ON) DMOS FET
  • Switch current up to 1.8 A
  • Wide input voltage range (2.7 V-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 (...)

Design tools & simulation

SIMULATION MODELS Download
SNVM668A.ZIP (40 KB) - PSpice Model
SIMULATION MODELS Download
SNVM669A.ZIP (42 KB) - PSpice Model
SIMULATION MODELS Download
SNVM882.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SNVM883.ZIP (2 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos