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TPS22949A,TPS22949,pdf(Current

消耗积分:3 | 格式:rar | 大小:1025 | 2010-10-09

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The TPS22949 and TPS22949A are devices that provides protection to systems and loads in high-current conditions. The device contains a 500-m current-limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 4.5 V as well as a low-dropout (LDO) regulator with a fixed output voltage of 1.8 V.

The switch is controlled by an on/off input (EN1), which is capable of interfacing directly with low-voltage control signals. When the switch current reaches the maximum limit, the TPS22949/TPS22949A operates in a constant-current mode to prohibit excessive currents from causing damage. If the constant current condition still persists after 12 ms, these devices shut off the switch and pull the fault signal pin (OC) low.

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