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
- 1-Ohm P-Channel MOSFET
- 300-mA Continuous Source Current
- Thermal and Short-Circuit Protection
- 600-mA Current Limit
- Operating Range: VCC = 2.8 V to 5.3 V
- 41-us Typical Rise Time
- 10-uA Maximum Standby Supply Current
- Ambient Temperature Range: –40°C to 85°C
- ESD Performance Tested Per JESD 22
- 4000-V Human-Body Model (HBM)
- 400-V Machine Model (MM)
- 1000-V Charged-Device Model (CDM)
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
- TPS22951 数据资料 dataSheet 下载.PDF
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- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
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- 高速数据转换 (PDF 1967 KB)
TPS22951 相关工具