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LTC1709 - 典型应用图例：
LTC1709典型应用图例一
LTC1709典型应用图例二
LTC1709 - 封装图解：
LTC1709封装图解一
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LINEAR产品 - LTC1709介绍

LTC1709 - LTC1709是2-Phase, 5-Bit Adjustable,High Efficiency, Synchronous Step-Down Switching Regulator

LTC1709是LINEAR凌力尔特公司的一款数字可编程的降压型稳压器产品，LTC1709是LTC1709是2-Phase, 5-Bit Adjustable,High Efficiency, Synchronous Step-Down Switching Regulator，本站介绍了LTC1709的封装应用图解、特点和优点、功能等，并给出了与LTC1709相关的LINEAR元器件型号供参考。

LTC1709 - LTC1709是2-Phase, 5-Bit Adjustable,High Efficiency, Synchronous Step-Down Switching Regulator - 数字可编程的降压型稳压器 - 电源管理 - 凌力尔特

LTC1709 - 2-Phase, 5-Bit Adjustable,High Efficiency, Synchronous Step-Down Switching Regulator

LTC1709 - 2-Phase, 5-Bit Adjustable,High Efficiency, Synchronous Step-Down Switching Regulator - Linear Technology（凌力尔特）

功能描述
The LTC1709 is a 2-phase, VID programmable, synchronous step-down switching regulator controller that drives all N-channel external power MOSFET stages in a fixed frequency architecture. The 2-phase controller drives its two output stages out of phase at frequencies up to 300kHz to minimize the RMS ripple currents in both input and output capacitors. The 2-phase technique effectively multiplies the fundamental frequency by two, improving transient response while operating each channel at a 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 in high current applications. The RUN/SS pin provides soft-start and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipaton during short-circuit conditions when overcurrent latchoff is disabled. OPTI-LOOP compensation allows the transient response to be optimized for a wide range of output capacitors and ESR values.
特点
  • Two Ouput Stages Operate Antiphase ReducingInput Capacitance and Power Supply Noise
  • 5-Bit VID Control (VRM 8.4 Compliant)VOUT: 1.3V to 3.5V in 50mV/100mV Steps
  • Current Mode Control Ensures Current Sharing
  • True Remote Sensing Differential Amplifier
  • OPTI-LOOP™ Compensation Minimizes COUT
  • Programmable Fixed Frequency: 150kHz to300kHz—Effective 300kHz to 600kHz SwitchingFrequency
  • ±1% Output Voltage Accuracy
  • Wide VIN Range: 4V to 36V Operation
  • Adjustable Soft-Start Current Ramping
  • Internal Current Foldback
  • Short-Circuit Shutdown Timer with Defeat Option
  • Overvoltage Soft-Latch Eliminates Nuisance Trips
  • Low Shutdown Current: 20µA
  • Small 36-Lead Narrow (0.209
    • 应用
  • Desktop Computers
  • Internet/Network Servers
  • Large Memory Arrays
  • DC Power Distribution Systems
  • Battery Chargers
    • 以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
    器件型号 封装 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量)
    LTC1709EG SSOP-36 E $5.60 $4.75
    LTC1709EG#PBF SSOP-36 E $5.60 $4.75
    LTC1709EG#TR SSOP-36 E $4.85
    LTC1709EG#TRPBF SSOP-36 E $4.85
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  • LT3080 - 可调 1.1A、单电阻、低压差稳压器
  • LTM4609 - 36VIN、34VOUT、高效率、降压-升压型 DC/DC uModule 稳压器
  • LT4320 / LT4320-1 - 理想二极管桥控制器
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  • LTC4000 - 用于电池充电和电源管理的高电压、大电流控制器
  • LTC3732 - 3-Phase, 5-Bit VID, 600kHz, Synchronous Buck Switching Regulator Controller
  • LT3763 - 60V 高电流降压型 LED 驱动器控制器
  • LTC3789 - 高效率、同步、四开关降压-升压型控制器
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