LT80602

RECOMMENDED FOR NEW DESIGNS

3V to 65V, 2.5A/3.5A/4.5A Synchronous Step-Down Silent Switcher with 8μA Quiescent Current

Viewing:

Overview

  • Silent Switcher® Architecture
    • Ultralow EMI Emissions
    • Spread Spectrum Frequency Modulation
  • High Efficiency at High Frequency
    • Up to 94.3% at 400kHz, 90% at 2.1MHz, 24VIN to 5VOUT
    • Up to 95.6% at 400kHz, 91.1% at 2.1MHz, 48VIN to 12VOUT
  • Pin Selectable Fixed 3.3V, Fixed 5V, or Adjustable Output from 0.8V to 99% of VIN
  • Low Quiescent Current Burst Mode Operation
    • 8μA IQ Regulating 24VIN to 5VOUT
  • On-the-Fly Mode Change Among Burst Mode, Pulse-Skipping Mode, and FCM
  • Built-in Output-Voltage Monitoring and Die Temperature Monitoring with PG/TJ
  • 200kHz to 3MHz Adjustable Switching Frequency with External Clock Synchronization
  • 80V Transient-Input Tolerant (LT8060xHV)
  • Programmable Soft-Start and Tracking
  • Small 17-Lead 3mm × 3mm Quad Flat No-lead (QFN)
LT80602
3V to 65V, 2.5A/3.5A/4.5A Synchronous Step-Down Silent Switcher with 8μA Quiescent Current
LT80602-LT80603 Simplified Application Diagram LT80602-LT80603 Efficiency LT80602-LT80603 Pin Configuration LT80602 Chip Illustration
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

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts Product Life Cycle Description
LT8620 RECOMMENDED FOR NEW DESIGNS 65V, 2A Synchronous Step-Down Regulator with 2.5μA Quiescent Current
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 2


Models for the following parts are available in LTspice:

  • LT80602
  • LT80602HV
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
LT80603EVKIT

Evaluates: LT80603, LT80602 in 5V Output-Voltage Application

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.

LT80603EVKIT
Evaluates: LT80603, LT80602 in 5V Output-Voltage Application
LT80603-EVKIT Evaluation Board Angle View LT80603-EVKIT Evaluation Board Top View LT80603-EVKIT Evaluation Board Bottom View

Latest Discussions

No discussions on LT80602 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed