RT9554A
RT9554A is Battery Output Current Sense Protection manufactured by Richtek.
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Battery Output Current Sense Protection IC
General Description
The RT9554A is designed for over-current detection. The current sense amplifier amplifies the voltage across resistor which is connected between CSP and CSN by 200. The amplified voltage is pared with the voltage of BAT_REF and check whether over-current happens or not. The RT9554A also provides a parator with two input pins, AC_REAL and AC_REF for users. There is an output pin FLAG as an indicator which is a N-MOSFET in open-drain configuration. Users can connect one resistor between the FLAG pin and supply voltage. Either over-current condition occurs or the AC_REAL voltage is larger than the AC_REF voltage,...
