LTC3419

PRODUCTION

Dual Monolithic 600mA Synchronous Step-Down Regulator

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Overview

  • High Efficiency Dual Step-Down Outputs: Up to 96%
  • 600mA Current per Channel at VIN = 3V
  • Only 35µA Quiescent Current During Operation (Both Channels)
  • 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
  • User-Selectable Burst Mode® Operation
  • Short-Circuit Protected
  • Ultralow Shutdown Current: IQ < 1µA
  • Available in Small MSOP or 3mm × 3mm DFN-8 Packages
LTC3419
Dual Monolithic 600mA Synchronous Step-Down Regulator
Dual Monolithic Buck Regulator in 8-Lead 3 × 3 DFN Efficiency and Power Loss vs Output Current Product Package 1 Product Package 2
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Documentation

Data Sheet 1

User Guide 1

Data Sheet

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

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Power System Management (PSM) & Sequencers 1
LTC2974
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Supervisory Circuits & Reset ICs 1
LTC2934
PRODUCTION Ultra-Low Power Adjustable Supervisor with Power-Fail Output
Switching Regulators & Controllers 1
LTC3880
RECOMMENDED FOR NEW DESIGNS Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC3419

LTpowerCAD 1

Design tools for the following parts are available in LTpowerCAD:

  • LTC3419
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.

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

eval board
schematic 1
DC1128A

LTC3419EDD Demo Board | 2.25MHz, 2.5V ≤ VIN ≤ 5.5V, VOUT1 = 1.2V/1.5V/1.8V @ 600mA, VOUT2 = 2.5V/3.3V @ 600mA

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Product Details

Demonstration circuit 1128A is a dual channel synchronous, 2.25MHz Step-Down DC/DC Regulator featuring the LTC3419. The DC1128A has an input voltage range of 2.5V to 5.5V. Both jumper selectable 3.3V/2.5V and 1.2V/1.5V/1.8V outputs are capable of delivering up to 600mA of output current. The device also features independent internal soft-start for each channel.
DC1128A
LTC3419EDD Demo Board | 2.25MHz, 2.5V ≤ VIN ≤ 5.5V, VOUT1 = 1.2V/1.5V/1.8V @ 600mA, VOUT2 = 2.5V/3.3V @ 600mA
DC1128A - Schematic

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