LTC3829

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. E) Product Selection Table
Part Models
16
1ku List Price
Starting From $4.44
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Part Details

  • 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
  • AEC-Q100 Qualified for Automotive Applications
LTC3829
3-Phase, Single Output Synchronous Step-Down DC/DC Controller with Diffamp
LTC3829 3-Phase, Single Output Synchronous Step-Down DC/DC Controller with Diffamp Efficiency Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Application Note 2

Design Note 1

Technical Articles 1

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Hardware Ecosystem

Parts Product Life Cycle Description
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LTC3880
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Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363
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Tools & Simulations

LTspice 3

Models for the following parts are available in LTspice:

  • LTC3829

LTpowerCAD 5

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
DC1530A

LTC3829EUHF Demo Board | 3-Phase Buck, 7V ≤ VIN ≤ 14V, VOUT = 1.5V @ 60A

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Product Details

Demonstration circuit 1530A is a high efficiency, 3-phase, synchronous buck converter with a 7V to 14V input range. It can supply 1.5V @ 60A maximum load current. The demo board uses the LTC3829EUHF controller. The LTC3829 is a feature-rich, single output, 3-phase synchronous buck controller with on-chip drivers, remote output voltage sensing, inductor DCR temperature compensation, phase shedding, nonlinear control and adaptive voltage positioning (AVP). It is suitable for inputs from 4.5V to 38V and outputs up to 5V.

eval board
schematic 2
schematic 3
schematic 4
schematic 5
schematic 6
DC1675A

LTC3829EUH Demo Board | LTC3829(×2) 3-Phase Buck, 7V ≤ VIN ≤ 14V, VOUT= 1.5V @ 120A

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Product Details

Demonstration circuit 1675A is a high efficiency, 6-phase, synchronous buck converter with a 7V to 14V input range that utilizes two LTC3829 controllers. It can supply 120A maximum load current with a 1.5V output voltage. The LTC3829 is a feature-rich single-output 3-phase synchronous buck controller with on-chip drivers and remote output voltage sensing.
DC1530A
LTC3829EUHF Demo Board | 3-Phase Buck, 7V ≤ VIN ≤ 14V, VOUT = 1.5V @ 60A
DC1530A - Schematic
DC1675A
LTC3829EUH Demo Board | LTC3829(×2) 3-Phase Buck, 7V ≤ VIN ≤ 14V, VOUT= 1.5V @ 120A
DC1675A Demo Board DC1675A Demo Board DC1675A Demo Board DC1675A Demo Board DC1675A - Schematic

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