User Guide Rev. 0
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Overview

Features and Benefits

  • Silent Switcher Architecture, Ultralow EMI Emissions
  • Input Voltage Range up to 65V
  • 400kHz Switching Frequency
  • High 92.6% Efficiency (VIN = 24V, IOUT = 3.5A)
  • 8μA IQ Regulating 24VIN to 5VOUT
  • On-the-Fly Mode Change Among Burst Mode, Pulse-Skipping Mode (PSM), and Forced Continuous Mode (FCM)
  • 99% Duty-Cycle Operation
  • 0.75μA Shutdown Current
  • Bias Bootstrap Input for Improved Efficiency
  • Burst and Pulse Skipping Modes to Enable Enhanced Light-Load Efficiency
  • Programmable Soft-Start and Tracking
  • Built-in Output-Voltage Monitoring and Die Temperature Monitoring with PG/TJ
  • Overtemperature and Overcurrent Protection
  • External Clock Synchronization
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR 25 Class 5 Conducted and Radiated Emissions

Product Details

The LT80603EVKIT# (EV kit) is a proven 5V design to evaluate the LT80603 synchronous step-down Silent Switcher®. The EV kit is designed for a 5V output. The wide input range up to 65V allows a variety of input sources, such as automotive batteries and industrial supplies. The LT80603 is a compact, ultralow electromagnetic interference (EMI) emission, high-efficiency, high-speed synchronous monolithic step-down switching regulator that consumes only 8μA of quiescent current when the output is regulated at 5V. The top and bottom power switches, compensation components, and other necessary circuits within the LT80603 minimize the need for external components and simplify the design. The EV kit can also evaluate the LT80602, LT80603A, LT80603HV, LT80602HV, and LT80603AHV. Refer to the IC datasheet guidelines when modifying the schematic to achieve optimal performance.

The application circuit demonstrated in the evaluation board is suitable for a wide range of automotive, telecom, industrial, and other applications.

The LT80603 data sheet provides a complete description of the part, its operation, and application information. Consult the data sheet in conjunction with this EV kit.

Design files for this circuit board are available at https://www.analog.com/en/products/LT80603.html.

Applicable Parts

Documentation & Resources

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  • Evaluation Design File (1)
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