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LM2735

ACTIVE
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520kHz/1.6MHz space efficient boost and SEPIC DC-DC regulator

Data sheet
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520kHz/1.6MHz space efficient boost and SEPIC DC-DC regulator

LM2735

ACTIVE
Data sheet Order now

Product details

Parameters

Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Vout (Min) (V) 3 Vout (Max) (V) 24 Switch current limit (Typ) (A) 2.25 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 520 Switching frequency (Max) (kHz) 1600 Iq (Typ) (mA) 7 Features Enable Duty cycle (Max) (%) 99 Operating temperature range (C) -40 to 125 Type Converter Rating Catalog open-in-new Find other Boost converters (integrated switch)

Package | Pins | Size

HVSSOP (DGN) 8 15 mm² 3 x 4.9 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 WSON (NGG) 6 9 mm² 3 x 3 open-in-new Find other Boost converters (integrated switch)

Features

  • Input Voltage Range: 2.7 V to 5.5 V
  • Output Voltage Range: 3 V to 24 V
  • 2.1-A Switch Current Over Full Temperature Range
  • Current-Mode Control
  • Logic High Enable Pin
  • Ultra-Low Standby Current of 80 nA in Shutdown
  • 170-mΩ NMOS Switch
  • ±2% Feedback Voltage Accuracy
  • Ease-of-Use, Small Total Solution Size
    • Internal Soft Start
    • Internal Compensation
    • Two Switching Frequencies
    • 520 kHz (LM2735-Y)
    • 1.6 MHz (LM2735-X)
    • Uses Small Surface Mount Inductors and Chip Capacitors
    • Tiny SOT-23, WSON, and MSOP-PowerPAD™ Packages
  • Create a Custom Design Using the LM2735 With WEBENCH® Power Designer

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

Description

The LM2735 device is an easy-to-use, space-efficient 2.1-A low-side switch regulator, ideal for Boost and SEPIC DC/DC regulation. The device provides all the active functions to provide local DC-DC conversion with fast-transient response and accurate regulation in the smallest PCB area. Switching frequency is internally set to either 520 kHz or 1.6 MHz, allowing the use of extremely small surface mount inductor and chip capacitors, while providing efficiencies of up to 90%. Current-mode control and internal compensation provide ease-of-use, minimal component count, and high-performance regulation over a wide range of operating conditions. External shutdown features an ultra-low standby current of 80 nA, ideal for portable applications. Tiny SOT-23, WSON, and MSOP-PowerPAD packages provide space savings. Additional features include internal soft start, circuitry to reduce inrush current, pulse-by-pulse current limit, and thermal shutdown.

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Same functionality and pinout but is not an equivalent to the compared device:
LM2735-Q1 ACTIVE 520kHz/1.6MHz space eEfficient boost and SEPIC DC-DC regulator, AEC-Q100 qualified AEC-Q100 qualified for automotive applications.

Technical documentation

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No results found. Please clear your search and try again. View all 10
Type Title Date
* Datasheet LM2735 520-kHz and 1.6-MHz Space-Efficient Boost and SEPIC DC/DC Regulator datasheet (Rev. I) Sep. 05, 2018
Application notes Design of UVLO for LM27313 (Rev. B) Apr. 08, 2014
User guides AN-1668 LM2735Y 8-Pin eMSOP Demo Board (Rev. B) Apr. 25, 2013
User guides AN-1660 LM2735Y 6-Pin LLP Demo Board (Rev. A) Apr. 24, 2013
User guides AN-1664 LM2735X 5-Pin SOT23 Demo Board (Rev. B) Apr. 24, 2013
User guides AN-1665 LM2735Y 5-Pin SOT23 Demo Board (Rev. B) Apr. 24, 2013
User guides AN-1666 LM2735X 6-Pin LLP Demo Board (Rev. A) Apr. 24, 2013
User guides AN-1667 LM2735X 8-Pin eMSOP Demo Board (Rev. A) Apr. 24, 2013
Application notes AN-1658 LM2735 BOOST and SEPIC DC-DC Regulator (Rev. A) Apr. 23, 2013
User guides High Efficiency Portable Media Player (PMP) Dock Station User Guide Jan. 27, 2012

Design & development

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

Hardware development

EVALUATION BOARDS Download
$2,324.44
Description

The J6Entry/RSP EVM is an evaluation platform designed to speed up development efforts and reduce time to market for applications such as Infotainment, reconfigurable Digital Cluster or Integrated Digital Cockpit.

The main CPU board integrates these key peripherals such as Ethernet or HDMI, while the (...)

Features
  • 10.1" Display with capacitive Touch
  • JAMR3 Radio Tuner Application Board
  • 2GB DDR3L
  • LP8733/LP8732 Power Solution
  • On-board eMMC, NAND, NOR
  • USB3, USB2, PCIe, Ethernet, COM8Q, CAN, MLB, MicroSD and HDMI connectors
View details
EVALUATION BOARDS Download
$485.00
Description
The Display Application Board is an application board to be used as a display plus multi-touch touch screen daughter board used on the J6Entry, RSP and TDA2E-17 CPU EVM boards.
Features
  • 10.1" AUO Display (1280X800) with capacitive Multi-Touch
  • 24 bit Parallel interface to the CPU board EVM
View details
EVALUATION BOARDS Download
$49.00
Description

The demo board included in this shipment converts 3V to 5.5V input to 3.3V output for up to 500mA load current using the LM2735X 1.6MHz DC-DC switching converter. This is a 2- layer board using the bottom layer as a ground plane.

Features
  • Input voltage range 2.7V to 5.5V
  • Output voltage range 3V to 24V
  • 2.1A switch current over full temperature range
  • Current-Mode control
  • Logic high enable pin
  • Ultra low standby current of 80 nA in shutdown
  • 170Ωm NMOS switch
  • 2% feedback voltage accuracy
  • Ease-of-use, small total solution size
          • Internal soft-start
    (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The demo board included in this shipment uses the LM2735X 1.6MHz DC-DC switching regulator that converts 3V to 5.5V input to 12V output for up to 500mA load current depending on Vin. This is a 2-layer board using the bottom layer as a Ground plane.

Features
  • Input voltage range 2.7V to 5.5V
  • Output voltage range 3V to 24V
  • 2.1A switch current over full temperature range
  • Current-Mode control
  • Logic high enable pin
  • Ultra low standby current of 80 nA in shutdown
  • 170Ωm NMOS switch
  • 2% feedback voltage accuracy
  • Ease-of-use, small total solution size
          • Internal soft-start
    (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The demo board included in this shipment converts 3V to 5.5V input to 12V output for up to 500mA load current using the LM2735Y 520kHz DC-DC switching converter in the 8-Pin eMSOP package. This is a 2-layer board using the bottom layer as a Ground plane.

Features
  • Input voltage range 2.7V to 5.5V
  • Output voltage range 3V to 24V
  • 2.1A switch current over full temperature range
  • Current-Mode control
  • Logic high enable pin
  • Ultra low standby current of 80 nA in shutdown
  • 170Ωm NMOS switch
  • 2% feedback voltage accuracy
  • Ease-of-use, small total solution size
          • Internal soft-start
    (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The demo board included in this shipment converts 3V to 5.5V input to 12V output for up to 500mA load current using the LM2735X 1.6MHz DC-DC switching converter. This is a 2-layer board using the bottom layer as a ground plane.

Features
  • Input voltage range 2.7V to 5.5V
  • Output voltage range 3V to 24V
  • 2.1A switch current over full temperature range
  • Current-Mode control
  • Logic high enable pin
  • Ultra low standby current of 80 nA in shutdown
  • 170Ωm NMOS switch
  • 2% feedback voltage accuracy
  • Ease-of-use, small total solution size
          • Internal soft-start
    (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The demo board included in this shipment converts 3V to 5.5V input to 12V output for up to 500mA load current using the LM2735Y 520kHz DC-DC switching converter. This is a 2-layer board using the bottom layer as a ground plane.

Features
  • Input voltage range 2.7V to 5.5V
  • Output voltage range 3V to 24V
  • 2.1A switch current over full temperature range
  • Current-Mode control
  • Logic high enable pin
  • Ultra low standby current of 80 nA in shutdown
  • 170Ωm NMOS switch
  • 2% feedback voltage accuracy
  • Ease-of-use, small total solution size
          • Internal soft-start
    (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The demo board included in this shipment converts 3V to 5.5V input to 12V output for up to 500mA load current using the LM2735X 1.6MHz DC-DC switching converter in the 8-Pin eMSOP package. This is a 2-layer board using the bottom layer as a ground plane.

Features
  • Input voltage range 2.7V to 5.5V
  • Output voltage range 3V to 24V
  • 2.1A switch current over full temperature range
  • Current-Mode control
  • Logic high enable pin
  • Ultra low standby current of 80 nA in shutdown
  • 170Ωm NMOS switch
  • 2% feedback voltage accuracy
  • Ease-of-use, small total solution size
          • Internal soft-start
    (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The demo board included in this shipment converts 3V to 5.5V input to 12V output for up to 500mA load current using the LM2735Y 520kHz DC-DC switching converter. This is a 2-layer board using the bottom layer as a Ground plane.

Features
  • Input voltage range 2.7V to 5.5V
  • Output voltage range 3V to 24V
  • 2.1A switch current over full temperature range
  • Current-Mode control
  • Logic high enable pin
  • Ultra low standby current of 80 nA in shutdown
  • 170Ωm NMOS switch
  • 2% feedback voltage accuracy
  • Ease-of-use, small total solution size
          • Internal soft-start
    (...)
View details

Design tools & simulation

SIMULATION MODELS Download
SNVM297A.ZIP (166 KB) - PSpice Model
SIMULATION MODELS Download
SNVM298.ZIP (49 KB) - PSpice Model
SIMULATION MODELS Download
SNVM299A.ZIP (179 KB) - PSpice Model
SIMULATION MODELS Download
SNVM838.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SNVM839.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNVM840.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAG3.ZIP (52 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAG4.ZIP (1 KB) - PSpice Model
CALCULATION TOOLS Download
Fly-Buck and Flyback Topology Selector
FLYBUCK-FLYBACK-DESIGN-CALC — This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.
Features
  • Features isolated topologies like Fly-Buck™, Fly-Buck-Boost, DCM and CCM Flyback
  • Capability to design up to 6 isolated outputs
  • Recommends ICs for desired application design
  • Incorporates loop compensation in designs
  • Compares efficiency, external component count and transformer currents for every topology (...)
View details
CAD/CAE SYMBOLS Download
SNLC003.ZIP (125 KB)

Reference designs

REFERENCE DESIGNS Download
Non-isolated power architecture with diagnostics reference design for protection relay modules
TIDA-010055 — This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HVSSOP (DGN) 8 View options
SOT-23 (DBV) 5 View options
WSON (NGG) 6 View options

Ordering & quality

Support & training

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Training series

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Videos

Power Tips: Layout for a Boost Power Stage

This video shows a simplified schematic and PCB layout for a boost converter

Posted: 21-Jan-2016
Duration: 04:31

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