LTC3633

PRODUCTION

Dual Channel 3A, 15V Monolithic Synchronous Step-Down Regulator

Data Sheet Product Selection Table
Part Models
8
1ku List Price
Starting From $5.07
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Part Details

  • 3.6V to 15V Input Voltage Range
  • 3A Output Current per Channel
  • Up to 95% Efficiency
  • Low Duty Cycle Operation: 5% at 2.25MHz
  • Selectable 0°/180° Phase Shift Between Channels
  • Adjustable Switching Frequency: 500kHz to 4MHz
  • External Frequency Synchronization
  • Current Mode Operation for Excellent Line and Load Transient Response
  • 0.6V Reference Allows Low Output Voltages
  • User Selectable Burst Mode® Operation or Forced Continuous Operation
  • Output Voltage Tracking and Soft-Start Capability
  • Short-Circuit Protected
  • Overvoltage Input and Overtemperature Protection
  • Low Power 2.5V Linear Regulator Output
  • Power Good Status Outputs
  • Available in (4mm × 5mm) QFN-28 and 28-Lead TSSOP Packages
LTC3633
Dual Channel 3A, 15V Monolithic Synchronous Step-Down Regulator
Efficiency vs Load Current Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 2

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Multiple Output Buck Regulators 2
LTC3633A
LTC3633A-1
Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator
LTC3633A-2
LTC3633A-3
Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LTC3633
  • LTC3633A
  • LTC3633A-1
  • LTC3633A-2
  • LTC3633A-3

LTpowerCAD 1

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

eval board
schematic 1
DC1347B

LTC3633EUFD Demo Board | 3.6V ≤ VIN ≤ 15V, VOUT1 = 1.2V/1.5V/1.8V @ 3A, VOUT2 = 2.5V/3.3V/5V @ 3A

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Product Details

Demonstration circuit DC1347 is a dual output regulator consisting of two constant-frequency step-down converters, based on the LTC3633 monolithic dual channel synchronous buck regulator. The DC1347 has an input voltage range of 3.6V to 15V, with each regulator capable of delivering up to 3A of output current.
DC1347B
LTC3633EUFD Demo Board | 3.6V ≤ VIN ≤ 15V, VOUT1 = 1.2V/1.5V/1.8V @ 3A, VOUT2 = 2.5V/3.3V/5V @ 3A
DC1347B - Schematic

Reference Designs

DK-START-5AGXB3N Starter Kit
DK-START-5AGXB3N Starter Kit
LTC Parts List
DK-START-5AGXB3N Block Diagram
DK-START-5AGXB3N Power Tree
DK-START-5AGXB3N Power Tree No TI
Altera Arria V GX Starter Kit Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
DE1-SoC Dev Kit
DE1-SoC Dev Kit
DE1-SoC Block Diagram
DE1-SoC Power Tree
Terasic DE1-SoC Development Kit Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
Xilinx BASYS 3 - Top View
Xilinx BASYS 3 - Top View
Xilinx Basys 3 - Bottom View
Basys 3 Power Tree
Xilinx Basys 3 Artix-7 FPGA Board Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
Altera Arria V GX Starter Kit
DK-START-5AGXB3N Starter Kit
LTC Parts List
DK-START-5AGXB3N Block Diagram
DK-START-5AGXB3N Power Tree
DK-START-5AGXB3N Power Tree No TI
Terasic DE1-SoC Development Kit
DE1-SoC Dev Kit
DE1-SoC Block Diagram
DE1-SoC Power Tree
Xilinx Basys 3 Artix-7 FPGA Board
Xilinx BASYS 3 - Top View
Xilinx Basys 3 - Bottom View
Basys 3 Power Tree

Latest Discussions

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RE: Unstable switching frequency LTC3633
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