LT8613

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. A) Product Selection Table
Part Models
4
1ku List Price
Starting From $6.20
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Part Details

  • Rail-to-Rail Current Sense Amplifier with Monitor
  • 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
  • Low EMI
  • 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
LT8613
42V, 6A Synchronous Step-Down Regulator with Current Sense and 3μA Quiescent Current
LT8613 Application Circuit LT8613 Performance Graph LT8613 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
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT8613
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.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC2011A

LT8613EUDE Demo Board | Sync Buck, 5.8V ≤ VIN ≤ 42V, VOUT = 5V @ 6A

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Product Details

Demonstration Circuit 2011A is a 42V, 6A micropower synchronous step-down regulator with current sense featuring the LT8613. 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 LT8613 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.
DC2011A
LT8613EUDE Demo Board | Sync Buck, 5.8V ≤ VIN ≤ 42V, VOUT = 5V @ 6A
DC2011A Demo Board DC2011A Demo Board DC2011A Demo Board DC2011A Demo Board DC2011A - Schematic

Latest Discussions

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RE: LT8613 control loop stability
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