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FAN6754 データシート(PDF) 3 Page - Fairchild Semiconductor |
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FAN6754 データシート(HTML) 3 Page - Fairchild Semiconductor |
3 / 14 page © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6754 • Rev. 1.0.1 3 F - Fairchild Logo Z - Plant Code X - 1-Digit Year Code Y - 1-Digit Week Code TT - 2-Digit Die Run Code T - Package Type (M=SOP) P - Y: Package (Green) M - Manufacture Flow Code Marking Information Figure 3. Top Mark Pin Configuration SOP-8 GND SENSE VDD RT GATE HV NC FB 18 7 6 5 4 2 3 Figure 4. Pin Configuration (Top View) Pin Definitions Pin # Name Description 1 GND Ground. This pin is used for the ground potential of all the pins. A 0.1µF decoupling capacitor placed between VDD and GND is recommended. 2 FB Feedback. The output voltage feedback information from the external compensation circuit is fed into this pin. The PWM duty cycle is determined by this pin and the current-sense signal from Pin 6. FAN6754 performs an open-loop protection (OLP); if the FB voltage is higher than a threshold voltage (around 4.6V) for more than 55ms, the controller latches off the PWM. 3 NC No Connection. 4 HV High Voltage Startup. This pin is connected to the line input via a 1N4007 and 200k0 resistors to achieve brownout and high/low line compensation. Once the voltage on the HV pin is lower than the brownout voltage, PWM output turns off. High/low line compensation dominates the cycle-by-cycle current limiting to achieve constant output power limiting with universal input. 5 RT Over-Temperature Protection. An external NTC thermistor is connected from this pin to GND. The impedance of the NTC decreases at high temperatures. Once the voltage on the RT pin drops below the threshold voltage, the controller latches off the PWM. 6 SENSE Current Sense. This pin is used to sense the MOSFET current for the current-mode PWM and current limiting. 7 VDD Supply Voltage. IC operating current and MOSFET driving current are supplied using this pin. This pin is connected to an external bulk capacitor of typically 47µF. The threshold voltage for turn-on and turn-off is 16.5V and 9V, respectively. The operating current is lower than 2mA. 8 GATE Gate Drive Output. The totem-pole output driver for the power MOSFET. It is internally clamped below 13V. ZXYTT 6754MR TPM ZXYTT 6754ML TPM |
同様の部品番号 - FAN6754_09 |
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同様の説明 - FAN6754_09 |
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