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TPS5102IDBTR датащи(PDF) 5 Page - Texas Instruments |
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TPS5102IDBTR датащи(HTML) 5 Page - Texas Instruments |
5 / 34 page TPS5102 DUAL, HIGH-EFFICIENCY CONTROLLER FOR NOTEBOOK PC POWER SLVS239 - SEPTEMBER 1999 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 detailed description (continued) current protection Current protection is achieved by sensing the high-side power MOSFET drain-to-source voltage drop during on-time at VCC_CNTP and LL. An external resistor between Vin and TRIP pin in serial with the internal current source adjusts the current limit. When the voltage drop during the on-time is high enough, the current comparator triggers the current protection and the circuit is reset. The reset repeats until the over-current condition is removed. COMP COMP is an internal comparator used for any voltage protection such as the output under-voltage protection for notebook power applications. If the core voltage is lower than the setpoint, the comparator turns off both channels to prevent the notebook from damage. SOFT1, SOFT2 Separate softstart terminals make it possible to set the start-up time of each output for any possibility. STBY1, STBY2 Both channels can be switched into standby mode separately by grounding the STBY pin. The standby current is as low as 1 µA. ULVO When the input voltage goes up to about 4 V, the IC is turned on, ready to function. When the input voltage is lower than the turn-on value, the IC is turned off. The typical hysteresis is 40 mV. |
Аналогичный номер детали - TPS5102IDBTR |
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Аналогичное описание - TPS5102IDBTR |
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