LTC4252B-1 负电压热插拔控制器

LTC®4252 负电压热插拔 (Hot SwapTM) 控制器允许在带电背板上安全地进行电路板的插拔操作。输出电流由 3 个电流限制级来控制:一个定时电路断路器、有源电流限制和一条快速前馈通路 (用于限制最坏情况灾难性故障条件下的峰值电流)。

当输入电源超过了期望的工作范围时,可调欠压和过压检测器将负载断接。对LTC4252 的电源输入进行并联调节,因而在非常高的电源电压条件下可安全的运作。一个多功能定时器负责延迟初始启动并控制电路断路器的响应时间。当检测到过大的 MOSFET 漏极电压时,可以加快电路断路器的响应时间,从而将 MOSFET 保持在其安全工作区 (SOA) 之内。一个可调软起动电路用于控制启动时的 MOSFET 浪涌电流。

LTC4252-2 提供了在故障之后自动重试的功能。LTC4252C-1 / LTC4252C-2 具有严格的 ±1% 欠压 / 过压门限准确度。LTC4252 可提供 8 引脚或 10 引脚 MSOP 封装。

LTC4252B 和 LTC4252C 改善了 LTC4252 和 LTC4252A 中并联稳压器的坚固性。

产品特点 Features
  • 允许在 -48V 带电背板上安全地进行电路板的插拔操作
  • 浮置拓扑结构允许执行非常高电压的操作
  • 具电路断路器定时器的电流限制
  • 快速响应时间限制了峰值故障电流
  • 可编程软起动电流限值
  • 具漏极电压加速响应的可编程定时器
  • ±1% 欠压 / 过压门限 (LTC4252C)
  • 改善了坚固性的并联稳压器
  • 可调欠压 / 过压保护
  • LTC4252B-1 / LTC4252C-1:在故障之后锁断
  • LTC4252B-2 / LTC4252C-2:在故障之后自动重试
  • 采用 8 引脚和 10 引脚 MSOP 封装
参数
LTC4252 参数
应用
  • 带电电路板插入
  • 电子电路断路器
  • -48V 分布式电源系统
  • 负电源控制
  • 中心局交换
  • 高可用性服务器
  • ATCA (高级电信计算架构)
典型应用图
LTC4252 典型应用
LTC4252B-1 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) *
LTC4252-1CMS MSOP 10 C $3.00 $2.35
LTC4252-1CMS#PBF MSOP 10 C $3.00 $2.35
LTC4252-1CMS#TR MSOP 10 C $2.41
LTC4252-1CMS#TRPBF MSOP 10 C $2.41
LTC4252-1CMS8 MSOP 8 C $2.55 $2.00
LTC4252-1CMS8#PBF MSOP 8 C $2.55 $2.00
LTC4252-1CMS8#TR MSOP 8 C $2.06
LTC4252-1CMS8#TRPBF MSOP 8 C $2.06
LTC4252-1IMS MSOP 10 I $3.40 $2.65
LTC4252-1IMS#PBF MSOP 10 I $3.40 $2.65
LTC4252-1IMS#TR MSOP 10 I $2.71
LTC4252-1IMS#TRPBF MSOP 10 I $2.71
LTC4252-1IMS8 MSOP 8 I $2.90 $2.30
LTC4252-1IMS8#PBF MSOP 8 I $2.90 $2.30
LTC4252-1IMS8#TR MSOP 8 I $2.36
LTC4252-1IMS8#TRPBF MSOP 8 I $2.36
LTC4252-2CMS MSOP 10 C $3.00 $2.35
LTC4252-2CMS#PBF MSOP 10 C $3.00 $2.35
LTC4252-2CMS#TR MSOP 10 C $2.41
LTC4252-2CMS#TRPBF MSOP 10 C $2.41
LTC4252-2CMS8 MSOP 8 C $2.55 $2.00
LTC4252-2CMS8#PBF MSOP 8 C $2.55 $2.00
LTC4252-2CMS8#TR MSOP 8 C $2.06
LTC4252-2CMS8#TRPBF MSOP 8 C $2.06
LTC4252-2IMS MSOP 10 I $3.40 $2.65
LTC4252-2IMS#PBF MSOP 10 I $3.40 $2.65
LTC4252-2IMS#TR MSOP 10 I $2.71
LTC4252-2IMS#TRPBF MSOP 10 I $2.71
LTC4252-2IMS8 MSOP 8 I $2.90 $2.30
LTC4252-2IMS8#PBF MSOP 8 I $2.90 $2.30
LTC4252-2IMS8#TR MSOP 8 I $2.36
LTC4252-2IMS8#TRPBF MSOP 8 I $2.36
LTC4252A-1CMS MSOP 10 C $3.45 $2.50
LTC4252A-1CMS#PBF MSOP 10 C $3.45 $2.50
LTC4252A-1CMS#TR MSOP 10 C $2.56
LTC4252A-1CMS#TRPBF MSOP 10 C $2.56
LTC4252A-1IMS MSOP 10 I $3.90 $2.90
LTC4252A-1IMS#PBF MSOP 10 I $3.90 $2.90
LTC4252A-1IMS#TR MSOP 10 I $2.96
LTC4252A-1IMS#TRPBF MSOP 10 I $2.96
LTC4252A-2CMS MSOP 10 C $3.45 $2.50
LTC4252A-2CMS#PBF MSOP 10 C $3.45 $2.50
LTC4252A-2CMS#TR MSOP 10 C $2.56
LTC4252A-2CMS#TRPBF MSOP 10 C $2.56
LTC4252A-2IMS MSOP 10 I $3.90 $2.90
LTC4252A-2IMS#PBF MSOP 10 I $3.90 $2.90
LTC4252A-2IMS#TR MSOP 10 I $2.96
LTC4252A-2IMS#TRPBF MSOP 10 I $2.96
LTC4252BCMS-1#PBF MSOP 10 C $3.00 $2.35
LTC4252BCMS-1#TRPBF MSOP 10 C $2.41
LTC4252BCMS-2#PBF MSOP 10 C $3.00 $2.35
LTC4252BCMS-2#TRPBF MSOP 10 C $2.41
LTC4252BCMS8-1#PBF MSOP 8 C $2.55 $2.00
LTC4252BCMS8-1#TRPBF MSOP 8 C $2.06
LTC4252BCMS8-2#PBF MSOP 8 C $2.55 $2.00
LTC4252BCMS8-2#TRPBF MSOP 8 C $2.06
LTC4252BIMS-1#PBF MSOP 10 I $3.40 $2.65
LTC4252BIMS-1#TRPBF MSOP 10 I $2.71
LTC4252BIMS-2#PBF MSOP 10 I $3.40 $2.65
LTC4252BIMS-2#TRPBF MSOP 10 I $2.71
LTC4252BIMS8-1#PBF MSOP 8 I $2.90 $2.30
LTC4252BIMS8-1#TRPBF MSOP 8 I $2.36
LTC4252BIMS8-2#PBF MSOP 8 I $2.90 $2.30
LTC4252BIMS8-2#TRPBF MSOP 8 I $2.36
LTC4252CCMS-1#PBF MSOP 10 C $3.45 $2.50
LTC4252CCMS-1#TRPBF MSOP 10 C $2.56
LTC4252CCMS-2#PBF MSOP 10 C $3.45 $2.50
LTC4252CCMS-2#TRPBF MSOP 10 C $2.56
LTC4252CIMS-1#PBF MSOP 10 I $3.90 $2.90
LTC4252CIMS-1#TRPBF MSOP 10 I $2.96
LTC4252CIMS-2#PBF MSOP 10 I $3.90 $2.90
LTC4252CIMS-2#TRPBF MSOP 10 I $2.96
LTC4252B-1 数据手册及相关资料下载
  1. 数据手册(英文) : LTC4252B-1/LTC4252B-2 LTC4252C-1/LTC4252C-2 - Negative Voltage Hot Swap Controllers.PDF
  2. 设计要点 (中文) : DN353 - AdvancedTCA 热插拔控制器简化了功率分配.PDF
  3. 可靠性数据 : R427 Reliability Data .PDF
  4. 产品选型卡 : High Voltage Hot Swap Controllers.PDF