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LTC1751 - 典型应用图例：
LTC1751典型应用图例一
LTC1751典型应用图例二
LTC1751 - 封装图解：
LTC1751封装图解一
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LINEAR产品 - LTC1751介绍

LTC1751 - LTC1751是Micropower, Regulated Charge Pump DC/DC Converters

LTC1751是LINEAR凌力尔特公司的一款稳压的升压型充电泵产品，LTC1751是LTC1751是Micropower, Regulated Charge Pump DC/DC Converters，本站介绍了LTC1751的封装应用图解、特点和优点、功能等，并给出了与LTC1751相关的LINEAR元器件型号供参考。

LTC1751 - LTC1751是Micropower, Regulated Charge Pump DC/DC Converters - 稳压的升压型充电泵 - 电源管理 - 凌力尔特

LTC1751 - Micropower, Regulated Charge Pump DC/DC Converters

LTC1751 - Micropower, Regulated Charge Pump DC/DC Converters - Linear Technology（凌力尔特）

功能描述
The LTC1751 family are micropower charge pump DC/DC converters that produce a regulated output voltage at up to 100mA. The input voltage range is 2V to 5.5V. Extremely low operating current (20µA typical with no load) and low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make them ideally suited for small, battery-powered applications.

The LTC1751 family operate as Burst Mode™ switched capacitor voltage doublers to achieve ultralow quiescent current. They have thermal shutdown capability and can survive a continuous short circuit from Vout to GND. The PGOOD pin on the LTC1751-3.3 and LTC1751-5 indicates when the output voltage has reached its final value and if the output has an undervoltage fault condition. The FB pin of the adjustable LTC1751 can be used to program the desired output voltage or current. An optional soft-start capacitor may be used at the SS pin to prevent excessive inrush current during start-up.

The LTC1751 family is available in an 8-pin MSOP package.

特点
  • 5V Output Current:100mA (VIN >/= 3V)
  • 3.3V Output Current:80mA (VIN >/= 2.5V)
  • Ultralow Power: 20µA Quiescent Current
  • Regulated Output Voltage: 3.3V ±4%, 5V ±4%, ADJ
  • VIN Range: 2V to 5.5V
  • 800kHz Switching Frequency
  • No Inductors
  • Very Low Shutdown Current: <2µA
  • Shutdown Disconnects Load from VIN
  • PowerGood/Undervoltage Output
  • Adjustable Soft-Start Time
  • Short-Circuit/Thermal Protection
  • Available in 8-Pin MSOP
    • 应用
  • Li-Ion Battery Backup Supplies
  • Local 3V and 5V Conversion
  • Smart Card Readers
  • PCMCIA Local 5V Supplies
  • White LED Backlighting
    • 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)
    LTC1751EMS8 MS-8 E $2.67 $2.25
    LTC1751EMS8-3.3 MS-8 E $2.67 $2.25
    LTC1751EMS8-3.3#PBF MS-8 E $2.67 $2.25
    LTC1751EMS8-3.3#TR MS-8 E $2.31
    LTC1751EMS8-3.3#TRPBF MS-8 E $2.31
    LTC1751EMS8-5 MS-8 E $2.67 $2.25
    LTC1751EMS8-5#PBF MS-8 E $2.67 $2.25
    LTC1751EMS8-5#TR MS-8 E $2.31
    LTC1751EMS8-5#TRPBF MS-8 E $2.31
    LTC1751EMS8#PBF MS-8 E $2.67 $2.25
    LTC1751EMS8#TR MS-8 E $2.31
    LTC1751EMS8#TRPBF MS-8 E $2.31
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  • LTC1682 - Doubler Charge Pumps with Low Noise Linear Regulator
  • LT3080 - 可调 1.1A、单电阻、低压差稳压器
  • LTC3260 - 低噪声、双通道电源的负输出充电泵
  • LT1615 - 采用 ThinSOT 封装的微功率升压型 DC/DC 转换器
  • LTC3105 - 具最大功率点控制功能及 250mV 启动电压的 400mA 升压型 DC/DC 转换器
  • LT1761 - 采用 SOT-23 封装的 100mA、低噪声、LDO 微功率稳压器
  • LT3652 - 用于太阳能电源的功率跟踪 2A 电池充电器
  • LTC4364 - 具理想二极管的浪涌抑制器
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