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TPS22951 限流配电开关

TPS22951 描述

The TPS22951 smart-load switch is intended for applications where heavy capacitive loads and short circuits are likely to be encountered. This device incorporates a 1-Ohm P-channel MOSFET power switch for power distribution. The switch is controlled by a logic enable (EN) input and an accessory detect (DET) pin. The switch is active when EN is high and DET is low. The switch is disabled if EN is low or DET is high. A low power state is achieved by driving EN high.

When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by increasing the on resistance of the power switch. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal-protection circuit shuts off the switch to prevent damage. The device recovers from a thermal shutdown once the device has cooled sufficiently, but the switch remains OFF until EN is toggled. This smart-load switch is designed to set current limit at 600-mA maximum

TPS22951
Adjustable Current Limit(Min)(A) 0.6
rDS(on) per FET(Typ)(mOhms) 1000
Number of FETs 1
Enable/Shutdown Active High
Vin(Min)(V) 2.8
Vin(Max)(V) 5.3
Iq(Typ)(uA) 100
Pin/Package 6DSBGA
TPS22951 特性
TPS22951 芯片订购指南
器件 状态 温度 (oC) 价格(美元) | Quantity 封装 | 引脚 封装数量 | 封装载体 丝印标记
TPS22951YFPR ACTIVE -40 to 85 0.25 | 1ku DSBGA (YFF) | 6 3000 | LARGE T&R 2W7
TPS22951 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
TPS22951YFPR Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM TPS22951YFPR TPS22951YFPR
TPS22951 应用技术支持与电子电路设计开发资源下载
  1. TPS22951 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器USB 电源开关产品选型与价格 . xls
  3. PowerPADTM Thermally Enhanced Package (PDF 1040 KB)
  4. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A) (PDF 2206 KB)
  5. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
  6. Comparing Performance of Current Ramp and Voltage Ramp Hot Swap Controller ICs (PDF 356 KB)
  7. PowerPADTM Made Easy (PDF 57 KB)
  8. 标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
  9. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  10. 所选封装材料的热学和电学性质 (PDF 645 KB)
  11. 高速数据转换 (PDF 1967 KB)
TPS22951 相关工具
名称 型号 公司 工具/软件类型
TPS22951 评估模块 TPS22951EVM-290 Texas Instruments 开发电路板/EVM
TPS22951 评估模块 TPS22951EVM-293 Texas Instruments 开发电路板/EVM
TPS22951 评估模块 TPS22951EVM Texas Instruments 开发电路板/EVM