Mobile communication terminal and circuit used for protecting charging of mobile communication terminal
A mobile communication terminal and protection circuit technology, applied in emergency protection circuit devices, battery circuit devices, circuit devices, etc., can solve the problem that there is no hardware method, the charger voltage input has no reverse protection function, and the mobile phone power management chip is easily damaged. and other problems to achieve the effect of protecting from damage and preventing reverse flow
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[0015] see figure 1 , figure 1 It is a schematic diagram of a circuit for protecting charging of a mobile communication terminal according to the present invention. Such as figure 1 As shown, the circuit 10 for protecting charging of a mobile communication terminal suggested in this embodiment includes: a comparator 103 , a first MOS transistor 101 , a second MOS transistor 102 , a diode 105 , a first resistor 106 and a second resistor 104 .
[0016] In this embodiment, the anode of the diode 105 is connected to the drain of the first MOS transistor 101, the cathode of the diode 105 is connected to the source of the first MOS transistor 101, and the source of the first MOS transistor 101 is also connected to the charging unit of the mobile communication terminal 12 and the negative input terminal of the comparator 103, the drain of the first MOS transistor 101 is also connected to the charging interface 11 of the mobile communication terminal and the positive input terminal ...
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