LTC3723 - Synchronous Push-Pull PWM Controllers

Features

  • High Efficiency Synchronous Push-Pull PWM
  • 1.5A Sink, 1A Source Output Drivers
  • Adjustable Push-Pull Dead-Time and Synchronous Timing
  • Adjustable System Undervoltage Lockout and Hysteresis
  • Adjustable Leading Edge Blanking
  • Low Start-Up and Quiescent Currents
  • Current Mode (LTC3723-1) and Voltage Mode (LTC3723-2) Operation
  • Single Resistor Slope Compensation
  • VCC UVLO and 25mA Shunt Regulator
  • Programmable Fixed Frequency Operation to 1MHz
  • 50mA Synchronous Output Drivers
  • Soft-Start, Cycle-by-Cycle Current Limiting and Hiccup Mode Short-Circuit Protection
  • 5V, 15mA Low Dropout Regulator
  • Available in 16-Pin SSOP Package

Typical Application

LTC3723 Typical Application

Description

The LTC3723-1/LTC3723-2 synchronous push-pull PWM controllers provide all of the control and protection functions necessary for compact and highly efficient, isolated power converters. High integration minimizes external component count, while preserving design flexibility.

The robust push-pull output stages switch at half the oscillator frequency. Dead-time is independently programmed with an external resistor. Synchronous rectifier timing is adjustable to optimize efficiency. A UVLO program input provides precise system turn-on and turn off voltages. The LTC3723-1 features peak current mode control with programmable slope compensation and leading edge blanking, while the LTC3723-2 employs voltage mode control with voltage feedforward capability.

The LTC3723-1/LTC3723-2 feature extremely low operating and start-up currents. Both devices provide reliable short-circuit and overtemperature protection. The LTC3723-1/LTC3723-2 are offered in a 16-pin SSOP package.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC3723EGN-1#PBF SSOP-16 GN E 05-08-1641 (GN16) Yes
LTC3723EGN-1#TRPBF SSOP-16 GN E 05-08-1641 (GN16) Yes
LTC3723EGN-2#PBF SSOP-16 GN E 05-08-1641 (GN16) Yes
LTC3723EGN-2#TRPBF SSOP-16 GN E 05-08-1641 (GN16) Yes


LTC3723 Package Drawing
LTC3723 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC3723EGN-1#PBF SSOP-16 E $6.70 $4.55 Yes
LTC3723EGN-1#TRPBF SSOP-16 E $4.61 Yes
LTC3723EGN-2#PBF SSOP-16 E $6.70 $4.55 Yes
LTC3723EGN-2#TRPBF SSOP-16 E $4.61 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC541A LTC3723EGN-1 Demo Board | Isolated Supply, 36V ≤ VIN ≤ 72V, Vout1 = 3.3V @ 40A, Vout2 = 2.5V @ 10A $250.00
DC719A LTC3723EGN-1 Isolated Demo Board | Sync Push-Pull Controller with Sync Rectification, 42V ≤ VIN ≤ 56V, 12Vout @ 20A $250.00
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Click here to view our complete list of demo boards

Applications

  • Telecommunications, Infrastructure Power Systems

  • Distributed Power Architectures

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

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To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice:
LTC3723-1
LTC3723-2

Technical Support