LTC3731H

PRODUCTION

3-Phase, 600kHz, Synchronous Buck Switching Regulator Controller

Part Models
4
1ku List Price
Starting From $6.56
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Part Details

  • 3-Phase Current Mode Controller with Onboard MOSFET Drivers
  • ±5% Output Current Matching Optimizes Thermal Performance and Size of Inductors and MOSFETs
  • ±2% VREF Accuracy Over Temperature Up to 140°C
  • Reduced Power Supply Induced Noise
  • ±10% Power Good Output Indicator
  • 225kHz to 680kHz Per Phase, PLL, Fixed Frequency
  • PWM, Stage Shedding or Burst Mode Operation
  • OPTI-LOOP Compensation Minimizes COUT
  • Adjustable Soft-Start Current Ramping
  • Short-Circuit Shutdown Timer with Defeat Option
  • Overvoltage Soft Latch
  • Adjustable Undervoltage Lockout Threshold
  • Selectable Phase Output for Up to 12-Phase Operation
  • Available in 36-Pin Narrow (0.209") SSOP and 5mm × 5mm QFN Packages
LTC3731H
3-Phase, 600kHz, Synchronous Buck Switching Regulator Controller
High Current Triple Phase Step-Down Converter Efficiency vs IOUT Product Package 1 Product Package 2
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Documentation

Data Sheet

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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
Dual-Supply Monitors 1
LTC2960 RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Multiple Output Buck Regulators 1
LTC3880 RECOMMENDED FOR NEW DESIGNS Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363 RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Tools & Simulations

LTspice 1


Models for the following parts are available in LTspice:

  • LTC3731
  • LTC3731H
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.

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