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STC6105 データシート(PDF) 10 Page - Suntac Electronic Corp. |
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STC6105 データシート(HTML) 10 Page - Suntac Electronic Corp. |
10 / 10 page Product Specification - 10 - R2 R1 2.1V 64uA -12V -5V PWM switching signal in the secondary power transformer is proportional to the AC line voltage. Adjust the ratio of resistor divider to decide the threshold of power-down warning. A small capacitor is connected from UVAC to ground for filtering the switching noise. Over Power Protection (OPP) The OPP (over power protection) is used for detecting over power and/or short-circuit conditions. When OPPS voltage (p.4, Note-1) is higher than 2.1V and this situation existed for longer than 7 msec,STC6105 will pull the PG low and lock off the power outputs. Vdd OPP OP2 OP1 R1 R2 R3 C1 Negative Voltage Protection The NVP provides an UVP (under voltage protection) for negative voltage outputs. An under-voltage represents the phenomenal of the overload condition in negative voltage output. For example, the –12V output may drop to –10V during the overload situation. A resistor determining the threshold of the protection is connected from pin NVP to the negative voltage output. Via this resistor, NVP outputs a 64uA constant current to the negative voltage output. When the NVP voltage is over 2.1V and the situation kept for longer than 7 msec, STC6105 will lock the power outputs off. VNVP = 64 uA (R1 + R2) – V-12V The power outputs will be locked off when VNVP 2.1V. + UVAC Vo 0.7V R1 R2 C1 VS Vin STC6105 Power Supply Supervisor + Regulator + PWM |
同様の部品番号 - STC6105 |
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同様の説明 - STC6105 |
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