TPS22948 器件是一款小型单通道负载开关,能够通过输出电流限制、反向电流阻断和热关断来提供强大的故障情况保护。
开关导通状态由数字输入控制,此输入可与低压控制信号直接连接。首次加电时,此器件使用智能下拉电阻来保持 ON 引脚不悬空,直到系统定序完成。故意将该引脚驱动为高电平 (>VIH) 之后,便会断开智能下拉电阻,以防止不必要的功率损耗。 ™
TPS22948 采用标准 SC-70 封装,工作温度范围为 –40°C 至 125°C。
| Number of channels | 1 |
| Vin (min) (V) | 2.5 |
| Vin (max) (V) | 5.5 |
| Imax (A) | 0.1 |
| Ron (typ) (mΩ) | 300 |
| Shutdown current (ISD) (typ) (µA) | 5 |
| Quiescent current (Iq) (typ) (µA) | 50 |
| Soft start | Fixed Rise Time |
| Current limit type | Fixed |
| Features | Reverse current protection, Short circuit protection, Thermal shutdown |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 105 |
| FET | Internal |
| Device type | Load switches |
| Function | Inrush current control, Reverse current blocking, Short circuit protection, Thermal shutdown |
| SOT-SC70 (DCK) | 6 | 4.2 mm² 2 x 2.1 |