LTC3729L-6 - LTC3729L-6是PolyPhase, Synchronous Step-Down Switching Regulator

LTC3729L-6是LINEAR凌力尔特公司的一款多相降压型控制器产品，LTC3729L-6是LTC3729L-6是PolyPhase, Synchronous Step-Down Switching Regulator，本站介绍了LTC3729L-6的封装应用图解、特点和优点、功能等，并给出了与LTC3729L-6相关的LINEAR元器件型号供参考。

LTC3729L-6 - LTC3729L-6是PolyPhase, Synchronous Step-Down Switching Regulator - 多相降压型控制器 - 电源管理 - 凌力尔特

LTC3729L-6 - PolyPhase, Synchronous Step-Down Switching Regulator

LTC3729L-6 - PolyPhase, Synchronous Step-Down Switching Regulator - Linear Technology（凌力尔特）

功能描述

The LTC3729L-6 is a PolyPhase™ synchronous stepdown current mode switching regulator controller with a 0.6V reference that drives N-channel external power MOSFET stages in a phase-lockable fixed frequency architecture. The PolyPhase controller drives its two output stages out of phase at frequencies up to 550kHz to minimize the RMS ripple currents in both input and output capacitors. The output clock signal allows expansion for up to 12 evenly phased controllers for systems requiring 15A to 200A of output current. This PolyPhase technique effectively multiplies the fundamental frequency by the number of channels used, improving transient response while operating each channel at an optimum frequency for efficiency. Thermal design is also simplified.

An internal differential amplifier provides true remote sensing of the regulated supply’s positive and negative output terminals as required for high current applications.

A RUN/SS pin provides both soft-start and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipation during short-circuit conditions when the overcurrent latchoff is disabled. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3729L-6 includes a power good output pin that indicates when the output voltage is inside the ±10% tolerance window.

特点

Reduces Required Input Capacitance and Power Supply Induced Noise

True Remote Sensing Differential Amplifier

0.6V, ±1% Voltage Reference Accuracy

PolyPhase Controller Operates from Two to Twelve Phases

Current Mode Control Ensures Current Sharing

Phase-Lockable Fixed Frequency: 250kHz to 550kHz

OPTI-LOOP Compensation Reduces COUT

Power Good Output Voltage Monitor

Wide VIN Range: 4V to 30V Operation

Very Low Dropout Operation: 99% Duty Cycle

Adjustable Soft-Start Current Ramping