LTC4214-2 Negative Voltage Hot Swap Controllers

The LTC®4214 negative voltage Hot Swap™ controller allows a board to be safely inserted and removed from a live backplane. Output current is controlled by three stages of current limiting: a timed circuit breaker, active current limiting and a fast feedforward path that limits peak current under worst-case catastrophic fault conditions.

Adjustable undervoltage and overvoltage detectors disconnect the load whenever the input supply exceeds the desired operating range. The LTC4214 controls negative supplies ranging from near zero to –16V. A multifunction timer delays initial start-up and controls the circuit breaker’s response time. This response time is accelerated by sensing excessive MOSFET drain voltage, keeping the MOSFET within its safe operating area (SOA). An adjustable soft-start circuit controls MOSFET inrush current at start-up. A power good status output can enable a power module at start-up or disable it if the circuit breaker trips.

The LTC4214-1 latches off after a circuit breaker fault times out. The LTC4214-2 provides automatic retry after a fault. The LTC4214 is available in the 10-pin MSOP package

产品特点 Features
  • Allows Safe Board Insertion and Removal from a Live Backplane
  • Controls Supplies from 0V to –16V
  • Adjustable Analog Current Limit With Circuit Breaker Timer
  • Fast Response Time Limits Peak Fault Current
  • Adjustable Soft-Start Current Limit
  • Adjustable Timer with Drain Voltage Accelerated Response
  • Adjustable Undervoltage/Overvoltage Protection
  • LTC4214-1: Latch Off After Fault
  • LTC4214-2: Automatic Retry After Fault
  • Available in the 10-Pin MSOP Package
参数
LTC4214 参数
应用
  • Hot Board Insertion
  • Electronic Circuit Breaker
  • Negative Power Supply Control
  • Central Office Switching
  • High Availability Servers
  • Disk Arrays
  • Optical Networking/Switching
  • ECL
典型应用图
LTC4214 典型应用
LTC4214-2 订购信息和价格参考Package Variations and Pricing
器件型号 封装 引脚 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量) *
LTC4214-1CMS MSOP 10 C $3.30 $2.35
LTC4214-1CMS#PBF MSOP 10 C $3.30 $2.35
LTC4214-1CMS#TR MSOP 10 C $2.41
LTC4214-1CMS#TRPBF MSOP 10 C $2.41
LTC4214-1IMS MSOP 10 I $3.75 $2.65
LTC4214-1IMS#PBF MSOP 10 I $3.75 $2.65
LTC4214-1IMS#TR MSOP 10 I $2.71
LTC4214-1IMS#TRPBF MSOP 10 I $2.71
LTC4214-2CMS MSOP 10 C $3.30 $2.35
LTC4214-2CMS#PBF MSOP 10 C $3.30 $2.35
LTC4214-2CMS#TR MSOP 10 C $2.41
LTC4214-2CMS#TRPBF MSOP 10 C $2.41
LTC4214-2IMS MSOP 10 I $3.75 $2.65
LTC4214-2IMS#PBF MSOP 10 I $3.75 $2.65
LTC4214-2IMS#TR MSOP 10 I $2.71
LTC4214-2IMS#TRPBF MSOP 10 I $2.71
LTC4214-2 数据手册及相关资料下载
  1. 数据手册(英文) : LTC4214-1/LTC4214-2 - Negative Voltage Hot Swap Controllers.PDF
  2. 设计要点 (中文) : DN402 - 小型 DFN 封装的电子电路断路器免除了检测电阻器.PDF
  3. 可靠性数据 : R421 Reliability Data .PDF
  4. 产品选型卡 : Low Voltage Hot Swap Controllers.PDF