LT3992

PRODUCTION

Monolithic Dual Tracking 3A Step-Down Switching Regulator

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Part Details

  • Wide Input Range:
    • – Operation from 3V to 60V
  • Independent Supply, Shutdown, Soft-Start, UVLO, Programmable Current Limit and Programmable Power Good for Each 3A Regulator
  • Die Temperature Monitor
  • Adjustable/Synchronizable Fixed Frequency Operation from 250kHz to 2MHz with Synchronized Clock Output
  • Independent Synchronized Switching Frequencies Optimize Component Size
  • Antiphase Switching
  • Outputs Can Be Paralleled
  • Flexible Output Voltage Tracking
  • Low Dropout: 95% Maximum Duty Cycle
  • 5mm × 5mm QFN Package
  • FMEA Compliant 38-Pin Exposed Pad TSSOP Package
LT3992
Monolithic Dual Tracking 3A Step-Down Switching Regulator
12V and 5V 2-Stage Multi-Frequency Step-Down Converter Independent Synchronized Switching Frequencies Extend Full Frequency Input Range Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 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
Circuit Monitors 1
LTC2960
RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Protection Switches & Controllers 2
LTC4359
RECOMMENDED FOR NEW DESIGNS Ideal Diode Controller with Reverse Input Protection
LTC4364
RECOMMENDED FOR NEW DESIGNS Surge Stopper with Ideal Diode
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:

  • LT3992
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
DC1537A

LT3992EFE Demo Board | Dual Buck with Tracking, 7V ≤ VIN ≤ 60V, VOUT1 = 5V @ 2A, VOUT2 = 3.3V @ 2A

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Product Details

The demo circuit 1537A is a dual current mode PWM step-down DC/DC converter featuring LT3992. The demo circuit is designed for 5V and 3.3V outputs from a 7V to 60V input. The current capability of each channel is up to 3A when running individually and 2A when both are sourcing the same current without special heat sinking. Individual soft-start, current limit, comparator, input voltage for each output as well as frequency division and synchronous and clock output functions simplify the complex design of dual-output power converters.
DC1537A
LT3992EFE Demo Board | Dual Buck with Tracking, 7V ≤ VIN ≤ 60V, VOUT1 = 5V @ 2A, VOUT2 = 3.3V @ 2A
DC1537A - Schematic

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