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NCP1201 Datasheet(PDF) 4 Page - ON Semiconductor |
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NCP1201 Datasheet(HTML) 4 Page - ON Semiconductor |
4 / 20 page NCP1201 http://onsemi.com 4 PIN FUNCTION DESCRIPTION Pin No. Pin Name Function Description 1 BOK Bulk OK This pin detects the input line voltage by sensing the bulk capacitor, and disables the PWM when line voltage is lower than normal. 2 FB Sets the Peak Current Setpoint By connecting an optocoupler to this pin, the peak current setpoint is ad- justed according to the output power demand. Internal monitoring of this pin level triggers the fault management circuitry. 3 CS Current Sense Input This pin senses the primary inductor current and routes it to the internal comparator via an LEB circuit. 4 GND The IC Ground − 5 DRV Driving Pulses The driver’s output to an external MOSFET. 6 VCC Supplies the IC This pin is connected to an external bulk capacitor of typically 10 mF. 7 NC No Connection This unconnected pin ensures adequate creepage distance between High Voltage pin to other pins. 8 HV Generates the VCC from the Line Connected to the high−voltage rail, this pin injects a constant current into the VCC capacitor. MAXIMUM RATINGS (TJ = 25°C unless otherwise noted) Rating Symbol Value Unit Power Supply Voltage, Pin 6 VCC −0.3, 16 V Input/Output Pins Pins 1, 2, 3, 5 VIO −0.3, 6.5 V Maximum Voltage on Pin 8 (HV) VHV 500 V Thermal Resistance, Junction−to−Air, PDIP−8 Version Thermal Resistance, Junction−to−Air, SOIC Version RqJA RqJA 100 178 °C/W °C/W Operating Junction Temperature Range TJ −40 to +150 °C Operating Ambient Temperature Range TA −25 to +125 °C Storage Temperature Range Tstg −55 to +150 °C ESD Capability, HBM (All pins except VCC and HV pins) (Note 1) − 2.0 kV ESD Capability, Machine Model (All pins except VCC and HV pins) (Note 1) − 200 V Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 1. This device series contains ESD protection and exceeds the following tests: Human Body Model (HBM) > 2.0 kV per JEDEC standard: JESD22−A114. Machine Model (MM) > 200 V per JEDEC standard: JESD22−A115. 2. Latchup Current Maximum Rating: ±150 mA per JEDEC standard: JESD78. |
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