LTC3636
LTC3636-1
Info : RECOMMENDED FOR NEW DESIGNS
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LTC3636
LTC3636-1

Dual Channel 6A, 20V Monolithic Synchronous Step-Down Regulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 16
1ku List Price Starting From $5.31
Features
  • Wide VIN Range: 3.1V to 20V
  • Wide VOUT Range:
    • 0.6V to 5V (LTC3636)
    • 1.8V to 12V (LTC3636-1)
  • Output Current per Channel: 6A
  • High Efficiency: Up to 95%
  • Die Temperature Monitor
  • 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
  • Power Good Status Outputs
  • Low Profile 4mm × 5mm 28-Lead QFN Package
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LTC3636/LTC3636-1 is a high efficiency, dual-channel monolithic synchronous buck regulator using a controlled on-time current mode architecture, with phase lockable switching frequency. The operating supply voltage range is from 3.1V to 20V, making it suitable for lithium-ion battery stacks as well as point of load power supply applications from a 12V or 5V input.

The operating frequency is programmable from 500kHz to 4MHz with an external resistor and may be synchronized to an external clock signal. The high frequency capability allows the use of small surface mount inductors and capacitors. The unique constant frequency/controlled on-time architecture is ideal for high step-down ratio applications that operate at high frequency while demanding fast transient response.

The LTC3636/LTC3636-1 can select between forced continuous mode and high efficiency Burst Mode operation. The LTC3636 and LTC3636-1 differ in their output voltage sense range.

APPLICATIONS

  • Distributed Power Systems
  • Battery-Powered Instruments
  • Point-of-Load Power Supplies
Part Models 16
1ku List Price Starting From $5.31

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Documentation

Documentation

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Sep 4, 2019

- 19_0202

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC2335A

LTC3636EUFD Demo Board | 3.1V to 20V Input with VOUT1 Range of 3.1V to 20V up to 6A & VOUT2 Range of 5V to 20V up to 6A

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DC2335A

LTC3636EUFD Demo Board | 3.1V to 20V Input with VOUT1 Range of 3.1V to 20V up to 6A & VOUT2 Range of 5V to 20V up to 6A

LTC3636EUFD Demo Board | 3.1V to 20V Input with VOUT1 Range of 3.1V to 20V up to 6A & VOUT2 Range of 5V to 20V up to 6A

Product Detail

Demonstration circuit DC2335A is a dual output regulator consisting of two constant-frequency step-down converters, based on the LTC3636 monolithic dual channel synchronous buck regulator. The DC2335A has an input voltage range of 3.1V to 20V, with each regulator capable of delivering up to 6A of output current. The DC2335A can operate in either Burst Mode® operation or forced continuous mode. In shutdown, the DC2335A can run off of 13µA typical total input current at 12V input. The DC2335A is a very efficient circuit: up to 92% for 3.3V output at 6A load, 5V input. The DC2335A uses the 28-Pin QFN package LTC3636EUFD, which has exposed pads 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 DC2335A demo board an ideal circuit for use in industrial or distributed power applications.

Tools & Simulations

Tools & Simulations 2

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Reference Designs

Reference Designs 7

Blaize<sup>&reg;</sup> Pathfinder P1600 Embedded System on Module

Pathfinder P1600 SOM Module

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Pathfinder P1600 SOM Module

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Circuits from the lab

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Pathfinder P1600 SOM Module

Features and Benefits

Blaize® Pathfinder P1600 small form factor embedded SoM brings the programmability and efficiency benefits of the Blaize GSP® architecture, ideal for AI inferencing workloads at the edge, to embedded systems.

Analog Devices, Inc. supports end to end power delivery solutions for Blaize Pathfinder P1600 SOM. Blaize uses Analog Devices discrete power solutions to enable their System on Chip (SoC) to deliver high compute with optimized with most TOPS/Watt performance for datacenter and Artificial Intelligence.

ADI provides supporting documentation including power schematics, layout, 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 FAE.

Key Power for full management devices are used as follows:

  • LTC7151S
  • LT8609S
  • LTC3636
  • ADP1752
  • ADP1755
View Detailed Reference Design external link
Blaize<sup>&reg;</sup> Xplorer X1600E EDSFF Accelerator Card​

X1600E EDSFF Accelerator

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X1600E EDSFF Accelerator

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Circuits from the lab

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X1600E EDSFF Accelerator

Features and Benefits

The X1600E is an Enterprise and Datacenter Storage Form Factor (EDSFF), power-efficient module hosting a Blaize X1600 SoC for AI workloads.

Analog Devices, Inc. supports end to end power delivery solutions for Blaize Pathfinder Xplorer 1600E ESDFF Accelerator. Analog Devices uses discrete power solutions to enable Blaize to deliver high compute with optimized with most TOPS/Watt performance.

These regulators are highly integrated discrete solutions optimized for cost, efficiency and foot print.

ADI provides supporting documentation including power schematics, layout, 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 FAE.

Key Power for full management devices are used as follows:

  • LTC7150S
  • LTC3636
View Detailed Reference Design external link

AI XCXM1902 Minimum Rails and PL Performance

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AI XCXM1902 Minimum Rails and PL Performance

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Circuits from the lab

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AI XCXM1902 Minimum Rails and PL Performance

Features and Benefits

ADI Key Power Management Features for Versal PRIME XCXM1802 for Minimum Rails / PL Performance

  • Proposed Solution implements new LTC3887-1/LTC7051 combo
  • LTC3887-1 is a PMBus 2-phase, 2 loop, current mode controller. PMBus commands allow Vin, Vout, current, temperature, and fault status read back.
  • LTC7051 is new Silent Switcher 2 ADI MOS capable of delivering increased DC load while switching at higher frequencies. Increased DC load allows for decreased phase count and higher current density. Increased Fsw allows for increase bandwidth and excellent transient response.
  • LTC3636 is dual 6A, controlled on-time current mode monolithic (integrated FETs). Provides high performance compact solution for auxiliary rails.
  • LT8607 is a compact, high efficiency, high speed 750mA synchronous monolithic.
  • LTC3634 is a single chip solution for DDR rails providing VDD, VTT, and Vref in a monolithic solution.
View Detailed Reference Design external link

AI XCXM1802 for Optimized Efficiency

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AI XCXM1802 for Optimized Efficiency

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Circuits from the lab

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AI XCXM1802 for Optimized Efficiency

Features and Benefits

ADI Key Power Management Features for Versal ACAP XCXM1802 for Optimized Efficiency

  • Proposed Solution implements new LTC3887-1/LTC7051 combo
  • LTC3887-1 is a PMBus 2-phase, 2 loop, current mode controller. PMBus commands allow Vin, Vout, current, temperature, and fault status read back.
  • LTC7051 is new Silent Switcher 2 ADI MOS capable of delivering increased DC load while switching at higher frequencies. Increased DC load allows for decreased phase count and higher current density. Increased Fsw allows for increase bandwidth and excellent transient response.
  • LTC3636 is dual 6A, controlled on-time current mode monolithic (integrated FETs). Provides high performance compact solution for auxiliary rails.
  • LTC3634 is a single chip solution for DDR rails providing VDD, VTT, and Vref in a monolithic solution.
  • LTC3634 is a single chip solution for DDR rails providing VDD, VTT, and Vref in a monolithic solution.
View Detailed Reference Design external link

AI XCXM1802 for Full Management Mid to High Voltage

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AI XCXM1802 for Full Management Mid to High Voltage

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Circuits from the lab

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AI XCXM1802 for Full Management Mid to High Voltage

Features and Benefits

ADI Key Power Management Features for Versal ACAP XCXM1802 for Mid to High Voltage

  • Proposed Solution implements new LTC3887-1/LTC7051 combo
  • LTC3887-1 is a PMBus 2-phase, 2 loop, current mode controller. PMBus commands allow Vin, Vout, current, temperature, and fault status read back.
  • LTC7051 is new Silent Switcher 2 ADI MOS capable of delivering increased DC load while switching at higher frequencies. Increased DC load allows for decreased phase count and higher current density. Increased Fsw allows for increase bandwidth and excellent transient response.
  • LTC3636 is dual 6A, controlled on-time current mode monolithic (integrated FETs). Provides high performance compact solution for auxiliary rails.
  • LTC3644 is a quad 1.25A output, high efficiency synchronous monolithic capable of switching up to 2.25MHz.
  • LTC3634 is a single chip solution for DDR rails providing VDD, VTT, and Vref in a monolithic solution.
View Detailed Reference Design external link
XCXM1802 Low Voltage

AI XCXM1802 for Low Voltage

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AI XCXM1802 for Low Voltage

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Circuits from the lab

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AI XCXM1802 for Low Voltage

Features and Benefits

ADI Key Power Management Features for Versal PRIME XCXM1802 for Low Voltage

  • Proposed Solution implements new LTC3887-1/LTC7051 combo
  • LTC3887-1 is a PMBus 2-phase, 2 loop, current mode controller. PMBus commands allow Vin, Vout, current, temperature, and fault status read back.
  • LTC7051 is new Silent Switcher 2 ADI MOS capable of delivering increased DC load while switching at higher frequencies. Increased DC load allows for decreased phase count and higher current density. Increased Fsw allows for increase bandwidth and excellent transient response.
  • LTC3636 is dual 6A, controlled on-time current mode monolithic (integrated FETs). Provides high performance compact solution for auxiliary rails.
  • LTC3644 is a quad 1.25A output, high efficiency synchronous monolithic capable of switching up to 2.25MHz.
  • LTC3634 is a single chip solution for DDR rails providing VDD, VTT, and Vref in a monolithic solution.
View Detailed Reference Design external link
Versal AI Core Board

Edge Core FPGA Power Delivery Reference Design

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Edge Core FPGA Power Delivery Reference Design

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Circuits from the lab

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Edge Core FPGA Power Delivery Reference Design

Features and Benefits

The ADI Versal AI Core Power Reference Design Board has been tested and proven to power the key rails for the Xilinx Versal AI Core ACAP series. Using a PMBUs Multi Phase DC/DC controller coupled with ADI SilentMOS (ADI version of DrMOS) to deliver up to 240A of output current.

The ADI LTC3888-1 is an 8 Phase PMBUs DC/DC controller that is coupled with the LTC7051 ADI SilentMOS to provide a flexible and scalable design that can be tailored as needed for both higher and lower power applications by adding or subtracting the LTC7051 ADI SilentMOS.

Request schematic for ADI power used on the board.

Contact ADI if you have questions about the ADI power management solutions used on this board.

View Detailed Reference Design external link

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