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LTC3727-1技术文档下载:
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LTC3727-1 - 典型应用图例:
LTC3727-1典型应用图例一
LTC3727-1 - 封装图解:
LTC3727-1封装图解一
LTC3727-1封装图解二
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Linear产品 - LTC3727-1介绍
LTC3727-1 - LTC3727-1是High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators

LTC3727-1是Linear公司的一款多输出降压产品,LTC3727-1是High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators,本站介绍了LTC3727-1的封装应用图解、特点和优点、功能等,并给出了与LTC3727-1相关的凌力尔特元器件型号供参考。

LTC3727-1 - High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators

LTC3727-1 - High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators - Linear Technology(凌力尔特)

功能描述

The LTC3727/LTC3727-1 are high performance dual step-down switching regulator controllers that drive all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows phase-lockable frequency of up to 550kHz. Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages out of phase.

OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. There is a precision 0.8V reference and a power good output indicator. A wide 4V to 30V (36V maximum) input supply range encompasses all battery chemistries.

A RUN/SS pin for each controller provides soft-start, and on the LTC3727GN, optional timed, short-circuit shutdown. Current foldback limits MOSFET heat dissipation during short-circuit conditions when overcurrent latchoff is disabled. Output overvoltage protection circuitry latches on the bottom MOSFET until VOUT returns to normal. The FCB mode pin can select among Burst Mode, constant frequency mode and continuous inductor current mode or regulate a secondary winding.

特点
  • Wide Output Voltage Range:0.8V < or = VOUT < or = 14V
  • Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise
  • OPTI-LOOP Compensation Minimizes COUT
  • ±1% Output Voltage Accuracy
  • Power Good Output Voltage Monitor
  • Phase-Lockable Fixed Frequency 250kHz to 550kHz
  • Latched Short-Circuit Shutdown (LTC3727 Only)
  • Dual N-Channel MOSFET Synchronous Drive
  • Wide VIN Range: 4V to 36V Operation
  • Very Low Dropout Operation: 99% Duty Cycle
  • Adjustable Soft-Start Current Ramping
  • Foldback Output Current Limiting
  • Output Overvoltage Protection
  • Low Shutdown IQ: 20μA
  • Selectable Constant Frequency or Burst Mode Operation
  • Small 28-Lead SSOP Package
  • LTC3727-1 Also Available in the 5mm x 5mm QFN Package
  • 应用
  • Telecom Systems
  • Automotive Systems
  • Battery-Operated Digital Devices
  • 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)
    LTC3727EG-1 SSOP-28 E $6.93 $4.85
    LTC3727EG-1#PBF SSOP-28 E $6.93 $4.85
    LTC3727EG-1#TR SSOP-28 E $4.95
    LTC3727EG-1#TRPBF SSOP-28 E $4.95
    LTC3727EUH-1 5x5 QFN-32 E $7.21 $5.05
    LTC3727EUH-1#PBF 5x5 QFN-32 E $7.21 $5.05
    LTC3727EUH-1#TR 5x5 QFN-32 E $5.15
    LTC3727EUH-1#TRPBF 5x5 QFN-32 E $5.15
    LTC3727IG-1#PBF SSOP-28 I $8.43 $5.90
    LTC3727IG-1#TRPBF SSOP-28 I $5.96
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  • LTC3115-1 - 40V、2A、同步降压-升压型 DC/DC 转换器
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  • LT8705 - 80V VIN 和 VOUT 同步、四开关、降压-升压型 DC/DC 控制器
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