LTC3547B

PRODUCTION

Dual Monolithic 300mA Synchronous Step-Down Regulator

Data Sheet Product Selection Table
Part Models
6
1ku List Price
Starting From $2.35
Viewing:

Part Details

  • High Efficiency (Up to 96%) Dual Step-Down Outputs
  • 300mA Output Current per Channel at VIN = 3V
  • 2.25MHz Constant-Frequency Operation
  • 2.5V to 5.5V Input Voltage Range
  • Low Dropout Operation: 100% Duty Cycle
  • No Schottky Diodes Required
  • Internally Compensated for All Ceramic Capacitors
  • Independent Internal Soft-Start for Each Channel
  • Available in Fixed Output Versions
  • Current Mode Operation for Excellent Line and Load Transient Response
  • 0.6V Reference Allows Low Output Voltages
  • Short-Circuit Protected
  • Ultralow Shutdown Current: IQ < 1µA
  • Low Profile (0.75mm) 8-Lead 3mm × 2mm DFN Package
LTC3547B
Dual Monolithic 300mA Synchronous Step-Down Regulator
Dual Monolithic Buck Regulator in 8-Lead 3mm × 2mm DFN Efficiency vs Output Current for VOUT = 2.5V Product Package 1
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

Data Sheet 1

Reliability Data 1

User Guide 1

Data Sheet

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

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
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
Single-Supply Monitors 1
LTC2935
PRODUCTION Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds
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:

  • LTC3547
  • LTC3547-1
  • LTC3547B
  • LTC3547B-1

LTpowerCAD

Design tools for the following parts are available in LTpowerCAD:

  • LTC3547
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
DC1013A

LTC3547EDDB | Dual Monolithic Synchronous Buck Converter

Buy Now View Details

Product Details

Demonstration circuit 1013 is a dual output regulator consisting of two constant-frequency step-down converters, based on the LTC3547 monolithic dual synchronous buck regulator IC. The DC1013 has an input voltage range of 2.5V to 5.5V, and both outputs are capable of delivering up to 300 mA of output current at a minimum input voltage of 3V. In Burst Mode® operation, which is the mode of the LTC3547 during light load current operation, the DC supply current of the DC1013 is typically only 40 uA (per channel) at no load, and less than 1 uA in shutdown. The DC1013 is a very efficient circuit: over 95% for either circuit. The LTC3547 comes in a tiny 8-lead 3 × 2 mm DFN package, which has an exposed pad on the bottom-side of the IC for better thermal performance.
DC1013A
LTC3547EDDB | Dual Monolithic Synchronous Buck Converter
DC1013A - Schematic

Latest Discussions

2 Years Ago
ADIN1110 Decoupling capacitors when LDO is not used
View related discussion on EngineerZone®

Recently Viewed