Features

• Optional Nonlinear Control for Fast Response
• ±0.75%, 0.6V Reference Accuracy
• PWM, Stage Shedding™ or Burst Mode® Operation
• High Efficiency: Up to 95%
• RSENSE or DCR Current Sensing
• Programmable DCR Temperature Compensation
• Phase-Lockable Fixed Frequency: 250kHz to 770kHz
• True Remote Sense Differential Amplifier
• Programmable Active Voltage Positioning (AVP)
• Triple N-Channel MOSFET Synchronous Drive
• Wide VIN Range: 4.5V to 38V Operation
• VOUT Range: 0.6V to 5V without Diffamp
• VOUT Range: 0.6V to 3.3V with Diffamp
• Clock Input and Output for 6-Phase Operation
• Adjustable Soft-Start or VOUT Tracking
• 38-Pin (5mm × 7mm) QFN and FE Packages
• Applications

Typical Application

Applications

• Applications
• Notebook and Palmtop Computers
• Telecom Systems
• Portable Instruments
• DC Power Distribution Systems

Packaging

Datasheet

• LTC3829 - 3-Phase, Single Output Synchronous Step-Down DC/DC Controller with Diffamp

Application Note

• AN133 - A Closed-Loop, Wideband, 100A Active Load
• AN140 - Basic Concepts of Linear Regulator and Switching Mode Power Supplies

Design Note

• DN489 - High Efficiency, High Density 3-Phase Supply Delivers 60A with Power Saving Stage Shedding, Active Voltage Positioning and Nonlinear Control for Superior Load Step Response

Reliability Data

• R526 - Reliability Data

Press Release

• Three Phase Step-Down DC/DC Controller Targets High Current Rails

LTspice

• LTC3829 Demo Circuit - 3-Phase Single Output Step-Down Regulator (7-14V to 1.5V @ 60A)
• LTC3829 Demo Circuit - 6-Phase Single Output Step-Down Regulator (7-14V to 1.5V @ 120A)

LTpowerCAD

• LTC3829 Project - 3-Phase, Single Output Synchronous Step-Down Supply with Vout Remote Sense & Inductor DCR Current Sensing (7-14V to 1.5V @ 60A)
• LTC3829 Project - 3-Phase, Single Output Synchronous Step-Down Supply with Vout Remote Sense & Rsense Current Sensing (11-13V to 1V @ 90A)
• LTC3829 Project - 3-Phase, Single Output Synchronous Step-Down Supply with Vout Remote Sense & Rsense Current Sensing (7-14V to 1.5V @ 60A)
• LTC3829 Project - 6-Phase, Single Output Synchronous Step-Down Supply with Vout Remote Sense (7-14V to 1.5V @ 120A)
• LTC3829 Project - 6-Phase, Single Output Synchronous Step-Down Supply with Vout Remote Sensing & Inductor DCR Current Sense (7-14V to 1.5V @ 120A)

Related Product

• LT8705 - 80V VIN and VOUT Synchronous 4-Switch Buck- Boost DC/DC Controller
• LTC3855 - Dual, Multiphase Synchronous DC/DC Controller with Differential Remote Sense
• LTC3789 - High Efficiency, Synchronous, 4-Switch Buck-Boost Controller
• LT3796/LT3796-1 - 100V Constant-Current and Constant-Voltage Controller with Dual Current Sense
• LT4320/LT4320-1 - Ideal Diode Bridge Controller
• LTC3880 - Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
• LTC4000 - High Voltage High Current Controller for Battery Charging and Power Management
• LT4363 - High Voltage Surge Stopper with Current Limit
• LT3758 - High Input Voltage, Boost, Flyback, SEPIC and Inverting Controller
• LTC4364 - Surge Stopper with Ideal Diode