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MIC2172BN

  • 描述:输出类别: 可调节 输出配置: 正极或负极,可隔离 拓扑结构: Boost,Cuk,Flyback,Forward Converter 开关频率: 100千赫兹 输出电流: 1.25A(开关) 供应商设备包装: 8-PDIP
  • 品牌: 微芯 (Microchip)
  • 交期:5-7 工作日
渠道:
  • 自营
  • 得捷
  • 贸泽

起订量: 1

  • 库存: 0
  • 单价: ¥36.53319
  • 数量:
    - +
  • 总计: ¥36.53
在线询价

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规格参数

  • 输出类别 可调节
  • 输出数量 one
  • 制造厂商 微芯 (Microchip)
  • 工作温度 -40摄氏度~85摄氏度(TA)
  • 最小电压输入 3V
  • 最大输入电压 40伏
  • 同步整流装置
  • 安装类别 通孔
  • 包装/外壳 8-DIP (0.300", 7.62毫米)
  • 供应商设备包装 8-PDIP
  • 最小输出电压 / 固定输出电压 1.24伏
  • 功能 上一步,上一步/下一步
  • 输出电流 1.25A(开关)
  • 开关频率 100千赫兹
  • 部件状态 过时的
  • 最大输出电压 65V (Switch)
  • 输出配置 正极或负极,可隔离
  • 拓扑结构 Boost,Cuk,Flyback,Forward Converter

MIC2172BN 产品详情

The MIC2172BN and MIC3172 are complete 100kHz SMPS current-mode controllers with internal 65V 1.25A power switches. The MIC2172BN features external frequency synchronization or frequency adjustment, while the MIC3172 features an enable/shutdown control input.

Although primarily intended for voltage step-up applications, the floating switch architecture of the MIC2172/3172 makes it practical for step-down, inverting, and Cuk configurations as well as isolated topologies.

Operating from 3V to 40V, the MIC2172/3172 draws only 7mA of quiescent current making it attractive for battery operated supplies.

The MIC3172 is for applications that require on/off control of the regulator. The MIC3172 is externally shutdown by applying a TTL low signal to EN (enable). When disabled, the MIC3172 draws only leakage current (typically less than 1µA). EN must be high for normal operation. For applications not requiring control, EN must be tied to VIN or TTL high.

The MIC2172BN is for applications requiring two or more SMPS regulators that operate from the same input supply. The MIC2172BN features a SYNC input which allows locking of its internal oscillator to an external reference. This makes it possible to avoid the audible beat frequencies that result from the unequal oscillator frequencies of independent SMPS regulators.

A reference signal can be supplied by one MIC2172BN designated as a master. To insure locking of the slave's oscillators, the reference oscillator frequency must be higher than the slave's. The master MIC2172's oscillator frequency is increased up to 135kHz by connecting a resistor from SYNC to ground (see applications information).

The MIC2172/3172 is available in an 8-pin plastic DIP or SOIC for -40°C to +85°C operation.

Feature

  • 1.25A, 65V internal switch rating
  • 3V to 40V input voltage range
  • Current-mode operation
  • Internal cycle-by-cycle current limit
  • Thermal shutdown
  • Low external parts count
  • Operates in most switching topologies
  • 7mA quiescent current (operating)
  • <1µA quiescent current, shutdown mode (MIC3172)
  • TTL shutdown compatibility (MIC3172)
  • External frequency synchronization (MIC2172)
  • External frequency trim (MIC2172)
  • Fits most LT1172 sockets (see applications info)
MIC2172BN所属分类:DC-DC开关调节器,MIC2172BN 由 微芯 (Microchip) 设计生产,可通过久芯网进行购买。MIC2172BN价格参考¥36.533188,你可以下载 MIC2172BN中文资料、PDF数据手册、Datasheet数据手册功能说明书,可查询MIC2172BN规格参数、现货库存、封装信息等信息!

微芯 (Microchip)

微芯 (Microchip)

Microchip Technology Inc.是微控制器和模拟半导体的领先供应商,为全球数千种不同的客户应用程序提供低风险的产品开发、更低的系统总成本和更快的上市时间。Microchip总部位于亚利...

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