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FAN5067 Scheda tecnica(PDF) 2 Page - Fairchild Semiconductor |
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FAN5067 Scheda tecnica(HTML) 2 Page - Fairchild Semiconductor |
2 / 14 page FAN5067 PRODUCT SPECIFICATION 2 REV. 1.0.1 5/2/02 Pin Assignments Pin Definitions Pin Number Pin Name Pin Function Description 1 QCAP Charge pump cap. Attach flying capacitor between this pin and PUMP to generate high voltage from standby power. 2 PUMP Charge pump switcher. 3 5VSTBY 5V Standby. Apply +5V standby on this pin to run the circuit in standby mode. 4 DUALOUT1 Dual output main gate control. Attach this pin to a transistor powering 3.3V or 5V dual from the main supply. 5 DUALOUT2 Dual output standby gate control. Attach this pin to a transistor powering 3.3V or 5V dual from the 5V standby supply. 6 DUALFB Dual output voltage Feedback. Pin 6 is used as the input for the voltage feedback control loop for 3.3V or 5V dual. 7 SLP_S3 SLP_S3. Control signal governing the Soft Off state S3. Internal current source pulls this line high if left open. 8 SLP_S5 SLP_S5. Control signal governing the Soft Off state S5. Internal current source pulls this line high if left open. 9 PWR_OK PWR_OK. Control signal for switches. Internal current source pulls this line high if left open. 10 SS Softstart. Attach a capacitor to this pin to determine the softstart rate. 11 GND Ground. Connect this pin to ground. 12 VADJFB Adjustable Dual Voltage Feedback. Pin 12 is used as the input for the voltage feedback loop for the adjustable dual voltage. 13 VADJ Adjustable Dual Voltage. Pin 13 sources VADJ during standby. 14 VADJOUT Adjustable Dual Voltage Base Control. Attach this pin to an NPN transistor powering VADJ from the 5V Main. 15 5VMAIN 5V Main. Apply +5V Main on this pin to run the VADJ base drive. 16 VCCP Main Power. Apply +12V through a diode on this pin to run the circuit in normal mode. Bypass with a 0.1µF capacitor. When 12V is not present, this pin produces voltage doubled 5V standby. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 FAN5067 QCAP PUMP 5VSTBY DUALOUT1 DUALOUT2 DUALVFB SLP_S3 SLP_S5 VCCP 5VMAIN VADJOUT VADJ VADJFB GND SS PWR_OK |
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