LT8607

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. D) Product Selection Table
Part Models
42
1ku List Price
Starting From $1.77
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Part Details

  • 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
LT8607
42V, 750mA Synchronous Step-Down Regulator with 2.5μA Quiescent Current
LT8607/LT8607B Application Circuit LT8607/LT8607B Performance Graph LT8607-8607B-pc LT8607/LT8607B Pin Configuration
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 1

Technical Articles 2

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Hardware Ecosystem

Parts Product Life Cycle Description
High Voltage Hot Swap Controllers 1
LTC4380
RECOMMENDED FOR NEW DESIGNS Low Quiescent Current Surge Stopper
Low Voltage Hot Swap Controllers 1
LTC4231
RECOMMENDED FOR NEW DESIGNS Micropower Hot Swap Controller
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT8607

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
schematic 2
schematic 3
schematic 4
DC2565A

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

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Product Details

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.
DC2565A
LT8607EMSE Demo Board | Synchronous Buck, 5.5V ≤ VIN ≤ 42V, VOUT = 5V @ 750mA, fSW = 2MHz
DC2565A Evaluation Board DC2565A Evaluation Board - Top View DC2565A Evaluation Board - Bottom View DC2565A

Reference Designs

Versal AI Core Board
Versal AI Core Board
Versal AI Core Board
Versal AI Core XCVC1902 Power Tree
Versal AI Core XCVC1902 Circuits from the lab

Edge Core FPGA Power Delivery Reference Design

View Detailed 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.

Versal PRIME Circuits from the lab

AI XCXM1902 Minimum Rails and PL Performance

View Detailed Reference Design

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.
Versal AI Core XCVC1902
Edge Core FPGA Power Delivery Reference Design
Versal AI Core Board
Versal AI Core Board
Versal AI Core XCVC1902 Power Tree
Versal PRIME
AI XCXM1902 Minimum Rails and PL Performance

Latest Discussions

3 Years Ago
RE: TSP62840 Replace - nanopower buck recommend request.
5 Years Ago
RE: LT8608 θjc of DC package
5 Years Ago
RE: LT8608 Thermal resistance of DC package
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