LTC3543

PRODUCTION

600mA Synchronous Step Down Buck Regulator with PLL, Soft-Start and Spread Spectrum

Part Models
2
1ku List Price
Starting From $2.35

Part Details

  • 600mA Output Current
  • 2.5V to 5.5V Input Voltage Range
  • 2.25MHz Constant-Frequency Operation, Spread Spectrum or Synchronized PLL (1MHz to 3MHz)
  • High Efficiency: Up to 95%
  • 1A Peak Inductor Current
  • Very Low Quiescent Current: Only 45µA During Burst Mode Operation
  • No Schottky Diode Required
  • Low Dropout Operation: 100% Duty Cycle
  • Overtemperature Protected
  • Stable with Ceramic Capacitors
  • Shutdown Mode Draws <1µA Supply Current
  • ±2% Output Voltage Accuracy
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Soft-Start
  • Available in a Low Profi le (0.75mm) 2mm × 3mm 6-Lead DFN Package
LTC3543
600mA Synchronous Step Down Buck Regulator with PLL, Soft-Start and Spread Spectrum
Ask a Question

Documentation

Data Sheet

This is the most up-to-date revision of the Data Sheet.

Learn More

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts Product Life Cycle Description
Digital Power System Managers 1
LTC2974 RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Multiple Output Buck Regulators 1
LTC3880 RECOMMENDED FOR NEW DESIGNS Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
Silicon Oscillators 1
LTC6909 PRODUCTION 1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation
Single-Supply Monitors 1
LTC2934 PRODUCTION Ultra-Low Power Adjustable Supervisor with Power-Fail Output
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


Models for the following parts are available in LTspice:

  • LTC3543
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
DC1008A

LTC3543EDC8 Demo Board | 2.5V ≤ VIN ≤ 5.5V, VOUT = 1.8V @ 600mA

Product Details

Demonstration circuit 1008 is a step-down converter, using the LTC3543 monolithic synchronous buck regulator. The DC1008 has an input voltage range of 2.5V to 5.5V, and is capable of delivering up to 600 mA of output current in a small 2mm × 3mm DFN package. The default output voltage of the DC1008 is 1.8V, but can be set as low as 0.6V, the reference voltage of the LTC3543.



DC1008A
LTC3543EDC8 Demo Board | 2.5V ≤ VIN ≤ 5.5V, VOUT = 1.8V @ 600mA

Latest Discussions

Recently Viewed