0.345A、2.7-5.5V 四路(2 入/4 出)高侧 MOSFET、故障报告、工作态低电平启用
The TPS2045A through and TPS2055A through TPS2058A power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered.
These devices incorporate 80-m N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by an independent logic enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.
When the output load exceeds the current-limit threshold or a short is present, these devices limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent OCx logic output low. 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. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present. These power-distribution switches are designed to current limit at 0.5 A.
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
TPS2048A TI 德州仪器 | 当前型号 | 当前型号 |
TPS2057A 德州仪器 | 功能相似 | TPS2048A和TPS2057A的区别 |
TPS2058A 德州仪器 | 功能相似 | TPS2048A和TPS2058A的区别 |