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WS3232 Datasheet(PDF) 6 Page - Shenzhen Winsemi Microelectronics Co., Ltd |
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WS3232 Datasheet(HTML) 6 Page - Shenzhen Winsemi Microelectronics Co., Ltd |
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6 / 7 page  Steady, Steady, Steady, Steady, keep keep keep keep you you you you advance advance advance advance 6/7 WS WS WS WS3232 3232 3232 3232 Cycle-by-Cycle current limiting (OCP), LED open/short circuit protection, CS resistor short circuit protection, VCC UVLO,OVP and Clamp, over temperature protection, and so on. When the LED is open circuit, it will trigger over-voltage protection logic and latch, the system stops switching immediately; When the LED short circuit is detected, the system works at low frequency(Fop=5Khz), so the power loss is low. At some catastrophic fault condition, such as shorted CS resistor or flyback transformer saturation, the internal fast fault detection circuit will trigger and latch, the system stops switching immediately. After the system enters into fault latch condition, the VCC voltage will fall until it reaches UVLO threshold. Then the system will re-start again. If the fault condition is removed, the system will recover to normal operation. The thermal shutdown circuitry in the WS3232 senses the die temperature after start up, and the thermal protection threshold is set to 150℃ with a 25℃ hysteresis. When the temperature on die of WS3232 rises and reaches the threshold, the power MOSFET will be shut down immediately and maintained switch off until the temperature on die falls 25℃ from thermal protection trigger point. |
Similar Part No. - WS3232 |
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Similar Description - WS3232 |
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