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LTC3737 - 典型应用图例：
LTC3737典型应用图例一
LTC3737典型应用图例二
LTC3737 - 封装图解：
LTC3737封装图解一
LTC3737封装图解二
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LINEAR产品 - LTC3737介绍

LTC3737 - LTC3737是Dual 2-Phase, No RSENSETM DC/DC Controller with Output Tracking

LTC3737是LINEAR凌力尔特公司的一款多输出降压产品，LTC3737是LTC3737是Dual 2-Phase, No RSENSETM DC/DC Controller with Output Tracking，本站介绍了LTC3737的封装应用图解、特点和优点、功能等，并给出了与LTC3737相关的LINEAR元器件型号供参考。

LTC3737 - LTC3737是Dual 2-Phase, No RSENSETM DC/DC Controller with Output Tracking - 多输出降压 - 电源管理 - 凌力尔特

LTC3737 - Dual 2-Phase, No RSENSETM DC/DC Controller with Output Tracking

LTC3737 - Dual 2-Phase, No RSENSETM DC/DC Controller with Output Tracking - Linear Technology（凌力尔特）

功能描述

The LTC3737 is a 2-phase dual step-down switching regulator controller that requires few external components. The constant frequency current mode architecture provides excellent AC and DC load and line regulation. MOSFET VDS sensing eliminates the need for current sense resistors and improves efficiency. Power loss and noise due to the ESR of the input capacitance are minimized by operating the two controllers out of phase.

Burst Mode operation provides high efficiency operation at light loads. 100% duty cycle provides low dropout operation and extends battery operating time.

Switching frequency can be programmed up to 750kHz, allowing the use of small surface mount inductors and capacitors. For noise sensitive applications, the LTC3737 can be externally synchronized from 250kHz to 850kHz.

Other features include a power good output voltage monitor, a tracking input and internal soft-start.

The LTC3737 is available in the low profile thermally enhanced (4mm × 4mm) QFN package or a 24-lead SSOP narrow package.

Protected by U.S. Patents, including 5481178, 5731694, 5929620, 6144194, 6580258, 5994885.

特点
  • Sense Resistor Optional
  • Out-of-Phase Controllers Reduce Required Input Capacitance
  • Programmable Output Voltage Tracking
  • Constant Frequency Current Mode Architecture
  • Wide VIN Range: 2.75V to 9.8V
  • Wide VOUT Range: 0.6V to VIN
  • 0.6V ±1.5% Reference
  • Low Dropout Operation: 100% Duty Cycle
  • True PLL for Frequency Locking or Adjustment (Frequency Range 250kHz to 850kHz)
  • Selectable Burst Mode or Pulse Skipping Operation at Light Loads
  • Internal Soft-Start Circuitry
  • Selectable Maximum Peak Current Sense Threshold
  • Power Good Output Voltage Monitor
  • Output Overvoltage Protection
  • Micropower Shutdown: IQ = 9μA
  • Tiny 4mm × 4mm QFN and 24-Lead SSOP Packages
  • ?
    • 应用
  • One or Two Lithium-Ion Powered Devices
  • Notebook and Palmtop Computers, PDAs
  • Portable Instruments
  • Distributed DC Power Systems
    • 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)
    LTC3737EGN SSOP-24 E $5.27 $3.65
    LTC3737EGN#PBF SSOP-24 E $5.27 $3.65
    LTC3737EGN#TR SSOP-24 E $3.75
    LTC3737EGN#TRPBF SSOP-24 E $3.75
    LTC3737EUF 4x4 QFN-24 E $5.27 $3.65
    LTC3737EUF#PBF 4x4 QFN-24 E $5.27 $3.65
    LTC3737EUF#TR 4x4 QFN-24 E $3.75
    LTC3737EUF#TRPBF 4x4 QFN-24 E $3.75
    下面可能是您感兴趣的Linear Technology（凌力尔特）元器件
  • LTC3736 - 具有输出跟踪功能的双通道、两相、No RSENSE 同步控制器
  • LTC3808 - 具有输出跟踪功能的无检测电阻器 (No RSENSE?) 型、低 EMI、同步 DC/DC 控制器
  • LTC3701 - 两相、低输入电压、双输出降压型 DC/DC 控制器
  • LTC3700 - Constant Frequency Step-Down DC/DC Controller with LDO Regulator
  • LT3796 - 具双电流检测的 100V 恒定电流和恒定电压控制器
  • LTC3891 - 低 Iq、60V、同步降压型控制器
  • LT8614 - 具 2.5μA 静态电流的 42V、4A 同步降压型 Silent Switcher
  • LTM4607 - 36Vin、24Vout、高效率、降压-升压型 DC/DC uModule 稳压器
  • LTC3772 - 微功率无检测电阻器型恒定频率降压 DC/DC 控制器
  • LT3741 / LT3741-1 - 高功率、恒定电流、恒定电压、降压型控制器
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