LTC3569

PRODUCTION

Triple Buck Regulator with 1.2A and Two 600mA Outputs and Individual Programmable References

Data Sheet Product Selection Table
Part Models
12
1ku List Price
Starting From $3.72
Viewing:

Part Details

  • Three Independent Current Mode Buck DC/DC Regulators (1.2A and 2 × 600mA)
  • Single Pin Programmable VFB Servo Voltages from 800mV Down to 425mV (in 25mV Steps)
  • Pull VFB High to Make Each 600mA Buck a Slave for Higher Current Operation
  • Pulse-Skipping or Burst Mode® Operation
  • Programmable Switching Frequency (1MHz to 3MHz) or Fixed 2.25MHz
  • Synchronizable (1.2MHz to 3MHz)
  • VIN Range 2.5V to 5.5V
  • All Regulators Internally Compensated
  • PGOOD Output Flag
  • Quiescent Current <100μA (All Regulators in Burst Mode Operation)
  • Zero Shutdown Current
  • Overtemperature and Short-Circuit Protection
  • Tiny 3mm × 3mm, 3mm × 4mm 20-Lead QFN and Thermally Enhanced TSSOP FE-16 Packages
LTC3569
Triple Buck Regulator with 1.2A and Two 600mA Outputs and Individual Programmable References
Efficiency vs Load Current Product Package 1 Product Package 2 Product Package 3
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

Design Note 2

Data Sheet

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

Learn More
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

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
PowerPath, Ideal Diodes, and Load Switches 1
LTC4417
RECOMMENDED FOR NEW DESIGNS Prioritized PowerPath™ Controller
Silicon Oscillators 1
LTC6909
PRODUCTION 1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation
Single-Supply Monitors 1
LTC2935
PRODUCTION Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LTC4365
RECOMMENDED FOR NEW DESIGNS Overvoltage, Undervoltage and Reverse Supply Protection Controller
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:

  • LTC3569
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
DC1340A

LTC3569EUD Demo Board | Triple Buck Regulator with 1.2A and Two 600mA Outputs and Individual Programmable References

Buy Now View Details

Product Details

Demonstration circuit 1340 is a triple output regulator consisting of three constant-frequency step-down converters integrated into LTC3569. DC1340 has an input voltage range of 2.5V to 5.5V, with regulators capable of delivering 1.2A or 600mA of load current on corresponding output. The three regulators operate independently with individual Enable pins and enter pulse skipping or burst mode at low loads for increasing efficiency. The DC1340 is a very efficient circuit with efficiency reading above 90%. High operating frequency of 2.25MHz allows exclusive use of the small size, low profile surface mount components. These features plus internal compensation circuits and extremely low quiescent current make the DC1340 demo board an ideal circuit for use in battery-powered, hand-held applications.
DC1340A
LTC3569EUD Demo Board | Triple Buck Regulator with 1.2A and Two 600mA Outputs and Individual Programmable References
DC1340A - Schematic

Latest Discussions

6 Years Ago
RE: LTC3569 EN Pins
View related discussion on EngineerZone®

Recently Viewed