IC manufacturers Analog Devices

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Analog Devices LT8692S | Demoboard EVAL-LT8692S-AZ

42V/2A plus 3× 8V/1A, 2MHz Quad Monolithic Synchronous Step-Down Regulator

Overview

TopologyBuck Converter
Input voltage6.2-42 V
Switching frequency1800-2200 kHz
Output 11.2 V / 1 A
Output 23.3 V / 1 A
Output 35 V / 1 A
Output 41.8 V / 1 A

Description

Demonstration circuit EVAL-LT8692S-AZ is an ultracompact 4 rail power supply featuring the LT®8692S,a 42V quad monolithic synchronous step-down Silent Switcher®. The demo circuit is designed for 5V, 3.3V,1.8V, and 1.2V outputs from a nominal 12V input. The 3.3V, 1.8V and 1.2V converters are powered from the high voltage buck regulator with 5V output, which is powered from a wide range of 6.2V to 42V input. The current capability is 2A for the channel 1, and 1A for the low voltage channels.

Features

  • Flexible Power Supply System Providing Four Outputs with a Wide Input Range
  • One High Voltage Synchronous Buck Regulator
  • 3V to 42V Input Voltage Range
  • Continuous Output Current Up to 2A
  • High Efficiency Up to 93%
  • Three Low Voltage Synchronous Buck Regulators
  • 1.2V to 8V Input Voltage Range
  • Continuous Output Currents Up to 1A
  • High Efficiency Up to 95%
  • Silent Switcher® Architecture
  • Ultralow EMI/EMC Emissions
  • Spread Spectrum Frequency Modulation
  • Ultralow Quiescent Current Burst Mode® Operation
  • 9.6μA IQ Regulating 12VIN1 to 5V/3.3V/1.8V/1.2VOUT1-4
  • Output Ripple <10mVPK-PK
  • External Synchronization Capability
  • Forced Continuous Mode Capability
  • Small Thermally Enhanced 4mm × 3mm 20-Lead LQFN Package
  • AEC-Q100 Qualified for Automotive Applications

Typical applications

  • Power Supplies
  • Industrial Controls
  • Automotive Systems