LT8612

PRODUCTION

42V, 6A Synchronous Step-Down Regulator with 3μA Quiescent Current

Data Sheet (Rev. B) Product Selection Table
Part Models
8
1ku List Price
Starting From $5.90
Viewing:

Part Details

  • Wide Input Voltage Range: 3.4V to 42V
  • Ultralow Quiescent Current Burst Mode® Operation:
    • 3μA IQ Regulating 12VIN to 3.3VOUT
    • Output Ripple < 10mVP-P
  • High Efficiency Synchronous Operation:
    • 95% Efficiency at 3A, 5VOUT from 12VIN
    • 94% Efficiency at 3A, 3.3VOUT from 12VIN
  • Fast Minimum Switch-On-Time: 40ns
  • Low Dropout Under All Conditions: 250mV at 3A
  • Allows Use Of Small Inductors
  • Safely Tolerates Inductor Saturation in Overload Conditions
  • Adjustable and Synchronizable: 200kHz to 2.2MHz
  • Current Mode Operation
  • Accurate 1V Enable Pin Threshold
  • Internal Compensation
  • Output Soft-Start and Tracking
  • Small Thermally Enhanced 3mm × 6mm 28-Lead QFN Package
  • AEC-Q100 Qualified for Automotive Applications
LT8612
42V, 6A Synchronous Step-Down Regulator with 3μA Quiescent Current
LT8612 Application Circuit LT8612 Pin Configuration LT8612 Performance Graph
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 1

Reliability Data 1

User Guide 2

Design Note 1

Technical Articles 2

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
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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 3

Models for the following parts are available in LTspice:

  • LT8612

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
schematic 5
DC2010A

LT8612 Demo Circuit | 5.8V ≤ VIN ≤ 42V, VOUT = 5V @ 6A

Buy Now View Details

Product Details

Demonstration circuit 2010A is a 42V, 6A micropower synchronous step-down regulator featuring the LT8612. The demo board is designed for 5V output from a 5.8V to 42V input. The wide input range allows a variety of input sources, such as automotive batteries and industrial supplies. The LT8612 is a compact, high efficiency, and high speed synchronous monolithic step-down switching regulator. The integrated power switches and inclusion of all necessary circuitry reduce the components count and solution size. Ultralow 3μA quiescent current in Burst Mode® operation achieves high efficiency at very light loads. Fast minimum on-time of 40ns enables high VIN to low VOUT conversion at high frequency.


 


eval board
schematic 6
schematic 7
schematic 8
schematic 9
DC2132A

24V 3A Constant Voltage, Constant Current Bench Supply Featuring LT3081, LT8612, LT3092

Buy Now View Details

Product Details

DC2132A is a 24V 3A constant voltage, constant current bench supply. It regulates any output voltage from 0V to 24V and any output current from 0A to 3A. It runs from 10V to 40V input although the output voltage should remain 5V or more below the input voltage.
DC2010A
LT8612 Demo Circuit | 5.8V ≤ VIN ≤ 42V, VOUT = 5V @ 6A
DC2010A Demo Board DC2010A Demo Board DC2010A Demo Board DC2010A Demo Board DC2010A - Schematic
DC2132A
24V 3A Constant Voltage, Constant Current Bench Supply Featuring LT3081, LT8612, LT3092
DC2132A Evaluation Board DC2132A Evaluation Board - Top View DC2132A Evaluation Board - Bottom View DC2132A - Schematic

Reference Designs

CN0508 Block Diagram
CN0508 Block Diagram
EVAL-CN0508-RPIZ Evaluation Board
EVAL-CN0508-RPIZ Evaluation Board - Top View
EVAL-CN0508-RPIZ Evaluation Board - Bottom View
CN0508 Circuits from the lab

75 Watt, Single-Output Benchtop Power Supply

View Detailed Reference Design

Features and Benefits

  • 75 Watt Power Supply
  • Constant Current (>3A) and Constant Voltage (>25V) Modes
  • True 0V and 0A operation
  • Manual or Software Controlled
QorIQ LS1088A-RDB Dev Kit
QorIQ LS1088A-RDB Dev Kit
Qor IQ LS1088-RDB Power Tree
NXP (Freescale) QorIQ LS1088A-RDB 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
T1023RDB Dev Kit
T1023RDB Dev Kit
QorIQ T1023 Power Tree
NXP (Freescale) QorIQ T1023RDB 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
CN0508
75 Watt, Single-Output Benchtop Power Supply
CN0508 Block Diagram
EVAL-CN0508-RPIZ Evaluation Board
EVAL-CN0508-RPIZ Evaluation Board - Top View
EVAL-CN0508-RPIZ Evaluation Board - Bottom View
NXP (Freescale) QorIQ LS1088A-RDB
QorIQ LS1088A-RDB Dev Kit
Qor IQ LS1088-RDB Power Tree
NXP (Freescale) QorIQ T1023RDB
T1023RDB Dev Kit
QorIQ T1023 Power Tree

Latest Discussions

2 Years Ago
RE: LT8612 | 1.2V output | Irregular pulses generated
View related discussion on EngineerZone®

Recently Viewed