The LTC3829EUHF#TRPBF is a high performance 3-phase single output synchronous step-down DC/DC switching controller that drives all N‑channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 770kHz. Power loss and noise due to ESR of the input capacitors are minimized by operating the three controller output stages out of phase.
The LTC3829EUHF#TRPBF can be configured for 6-phase operation, has DCR temperature compensation, and output foldback current limiting. This device features a precision 0.6V reference and a power good indicator.
Light load efficiency is optimized by using a choice of output Stage Shedding or Burst Mode operation. A differential amplifier provides true remote sensing of the output voltage at the point of load.
The LTC3829EUHF#TRPBF is available in both low profile 38-pin 5mm × 7mm QFN and Exposed Pad FE packages.
Feature
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
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
