LTC3633A
LTC3633A-1

PRODUCTION

Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator

Part Models
16
1ku List Price
Starting From $5.07
Viewing:

Part Details

  • 3.6V to 20V 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 Mode Operation
  • Output Voltage Tracking and Soft-Start Capability
  • Short-Circuit Protected
  • Overvoltage Input and Overtemperature Protection
  • Power Good Status Outputs
  • LTC3633: 16V Absolute Maximum VIN
  • LTC3633A: 20V Absolute Maximum VIN, Pin Compatible with LTC3633
  • Low Profile (4mm × 5mm) QFN-28 and 28-Lead TSSOP Packages
LTC3633A
LTC3633A-1
Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator
Efficiency vs Load Current Product Package 1 Product Package 2
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet

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

Learn More
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Hardware Ecosystem

Parts Product Life Cycle Description
Digital Power System Managers 1
LTC2977 RECOMMENDED FOR NEW DESIGNS 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement
Multiple Output Buck Regulators 1
LTC3633A-2
LTC3633A-3
Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Tools & Simulations

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
DC1895A

LTC3633AEUFD Demo Board | Dual Buck, 3.6V ≤ VIN ≤ 20V, VOUT1 = 1.2V/1.5V1.8V @ 3A, VOUT2 = 2.5V/3.3V/5V @ 3A

Product Details

Demonstration circuit DC1895 is a dual output regulator consisting of two constant-frequency step-down converters, based on the LTC3633A monolithic dual channel synchronous buck regulator. The DC1895 has an input voltage range of 3.6V to 20V, with each regulator capable of delivering up to 3A of output current. The DC1895 can operate in either Burst Mode® operation or forced continuous mode. In shutdown, the DC1895 can run off of less than 15μA total. The DC1895 is a very efficient circuit: over 90% for either circuit. The DC1895 uses the 28-Pin QFN LTC3633AEUFD package, which has an exposed pad on the bottom-side of the IC for better thermal performance. These features, plus a programmable operating frequency range from 500kHz to 4MHz (2MHz switching frequency with the RT pin connected to INTVCC), make the DC1895 demo board an ideal circuit for use industrial or distributed power applications.

DC1895A
LTC3633AEUFD Demo Board | Dual Buck, 3.6V ≤ VIN ≤ 20V, VOUT1 = 1.2V/1.5V1.8V @ 3A, VOUT2 = 2.5V/3.3V/5V @ 3A
DC1895A Demo Board DC1895A Demo Board DC1895A Demo Board DC1895A Demo Board DC1895A - Schematic

Reference Designs

Monolithic Power Tree Solution for the ZU7 FPGA
ZCU104 Circuits from the lab

Zynq UltraScale+ MPSoC ZCU104 Paper Reference Design

Features and Benefits

  • The ZCU104 Evaluation Kit enables designers to jumpstart designs for embedded vision applications such as surveillance, Advanced Driver Assisted Systems (ADAS), machine vision, Augmented Reality (AR), drones and medical imaging.

  • The ADI Power delivery solutions support multiple reference designs using DC/DC module and monolithic solutions. ADI offers several options for powering the Zu7 FPGA.

  • Our module-based solutions combine a small footprint, while maximizing efficiency and tight regulation. Our monolithic based solutions support a lower cost optimized power delivery solution for mass production.

  • ADI provides supporting documentation to enable you to validate the power solution for your application seamlessly.

  • For a complete list power designs and use cases, please contact your local FAE.

  • Please refer to the circuit descriptions below that best support your design.
Versal HBM Diagram
Versal HBM Non-Hardware Verified Design Circuits from the lab

Features and Benefits

  • The Versal HBM series features heterogeneous integration of fast memory, secure connectivity, and adaptive compute to eliminate processing and memory bottlenecks for memory-bound, compute-intensive workloads such as machine learning, database acceleration, next-generation firewalls, and advanced network testers. Analog Devices has worked closely AMD to develop verified power solutions that optimize cost, size and efficiency in high performance applications.
  • ADI provides supporting documentation including LTpowerPlanner and applicable LTpowerPlay configuration files to enable you to validate the power solution for your application seamlessly. For a complete list  power designs and use cases, please contact your local local FAE.
  • ADI has also completed a complete power evaluation report for Mid-High Voltage rails. For a complete report please submit your interest here.

Key power regulators are used for this device as follows:

  • LTC3888-1
  • LTC7051
  • LTC3633A
  • LTC7200S
  • LTC7151S
  • LT8652
  • ADP125
  • LTC3617 (Optional)
  • LTC3618 (Optional)
ZCU104
Zynq UltraScale+ MPSoC ZCU104 Paper Reference Design
Monolithic Power Tree Solution for the ZU7 FPGA
uModule Power Tree for the ZU7 FPGA 
Versal HBM Non-Hardware Verified Design
Versal HBM Diagram

Latest Discussions

Recently Viewed