LT8607
Info : RECOMMENDED FOR NEW DESIGNS
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LT8607

42V, 750mA Synchronous Step-Down Regulator with 2.5μA Quiescent Current

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 42
1ku List Price Starting From $1.77
Features
  • Wide Input Voltage Range: 3.0V to 42V
  • Ultralow Quiescent Current Burst Mode® Operation:
    • <3µA IQ Regulating 12VIN to 3.3VOUT
    • Output Ripple <10mVP-P
  • High Efficiency 2MHz Synchronous Operation
    • >93% Efficiency at 0.5A, 12VIN to 5VOUT
  • 750mA Maximum Continuous Output
  • Fast Minimum Switch-On Time: 35ns
  • Adjustable and Synchronizable: 200kHz to 2.2MHz
  • Allows Use of Small Inductors
  • Spread Spectrum Frequency Modulation for Low EMI
  • Low Dropout
  • Peak Current Mode Operation
  • Accurate 1V Enable Pin Threshold
  • Internal Compensation
  • Output Soft-Start and Tracking
  • Small Thermally Enhanced 10-Lead MSOP Package or 8-Lead 2mm × 2mm DFN Package
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LT8607 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 1.7µA of non-switching quiescent current. The LT8607 can deliver 750mA of continuous current. Low ripple Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mVP-P. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN undervoltage lockout or to shut down the LT8607 reducing the input supply current to 1µA.

The MSOP package includes a SYNC pin to synchronize to an external clock, or to select Burst Mode operation or pulse-skipping with or without spread spectrum; the TR/SS pin programs soft-start or tracking. The DFN package omits these pins and can be purchased in pulse-skipping or Burst Mode operation.

Part Number Package Output Voltage  Synch Functionality
LT8607MSE MSE Programmable  Programmable
LT8607-5MSE MSE Fixed 5V Out

Programmable

 LT8607DFN DFN  Programmable 

Burst Mode Operation

LT8607BDFN  DFN  Programmable   Pulse-Skipping Mode

APPLICATIONS

  • General Purpose Step Down Converter
  • Low EMI Step Down
Part Models 42
1ku List Price Starting From $1.77

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Documentation

Documentation

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Feb 4, 2020

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC2565A

LT8607EMSE Demo Board | Synchronous Buck, 5.5V ≤ VIN ≤ 42V, VOUT = 5V @ 750mA, fSW = 2MHz

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DC2565A

LT8607EMSE Demo Board | Synchronous Buck, 5.5V ≤ VIN ≤ 42V, VOUT = 5V @ 750mA, fSW = 2MHz

LT8607EMSE Demo Board | Synchronous Buck, 5.5V ≤ VIN ≤ 42V, VOUT = 5V @ 750mA, fSW = 2MHz

Product Detail

Demonstration Circuit 2565A is a 42V, 0.75A micropower synchronous step-down regulator featuring the LT8607. The demo board is designed for 5V output from a 5.5V to 42V input. The wide input range allows a variety of input sources, such as automotive batteries and industrial supplies. The LT8607 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes less than 3μA of quiescent current when output is regulated at 5V. Top and bottom power switches, compensation components and other necessary circuits are inside of the LT8607 to minimize external components and simplify design.

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 2

AI XCXM1902 Minimum Rails and PL Performance

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ai-xcxm1802-minimum-rails-pl-performance

AI XCXM1902 Minimum Rails and PL Performance

ai-xcxm1802-minimum-rails-pl-performance

Circuits from the lab

tooltip Info:Circuits from the lab
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
Versal AI Core Board

Edge Core FPGA Power Delivery Reference Design

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versal-ai-core-xcvc1902

Edge Core FPGA Power Delivery Reference Design

versal-ai-core-xcvc1902

Circuits from the lab

tooltip Info:Circuits from the lab
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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