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FAN5037 데이터시트(PDF) 2 Page - Fairchild Semiconductor |
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FAN5037 데이터시트(HTML) 2 Page - Fairchild Semiconductor |
2 / 11 page FAN5037 PRODUCT SPECIFICATION 2 REV. 1.0.3 9/26/01 Pin Assignments Absolute Maximum Ratings Note: 1. Functional operation under any of these conditions is not implied. Performance is guaranteed only if Operating Conditions are not exceeded. Operating Conditions Pin Descriptions Pin Name Pin Number Pin Function Description CEXT 1 External capacitor. A 180pF capacitor is connected to this pin as part of the constant on-time pulse width circuit. Careful layout of this pin is critical to system performance. See Applications Information for details. VCCA 2 Analog Vcc. Power supply for regulator control circuitry and voltage reference. Connect to system 5V supply and decouple to ground with 0.1µF ceramic capacitor. IFBH 3 High side current feedback. Pins 3 and 4 are used as the inputs for the current feedback control loop and as the short circuit current sense points. Careful layout of the traces from these pins to the current sense resistor is critical for optimal performance of the short circuit protection scheme. See Applications Information for details. IFBL 4 Low side current feedback. See Applications Information for details. VFB 5 Voltage feedback. Using two external resistors, this pin sets the output voltage level for the switching regulator. GNDP 6 Power Ground. Connect to a low impedance ground. See Application Information for details. DRV 7 MOSFET driver output. Connect this pin to the gate of the N-channel MOSFET Q1 as shown in Figure 12. The trace from this pin to the MOSFET gate should be kept as short as possible (less than 0.5"). See Applications Information for details. VCCP 8 Power Vcc. Power supply for DRV output driver. Connect to system 12V supply with R-C filter shown in Figure 12. See Applications Information for details. Supply Voltages, VCCA 7V Supply Voltages, VCCP 13V Junction Temperature, TJ +150°C Storage Temperature, TS -65 to +150°C Lead Soldering Temperature, 10 seconds 300°C Thermal Resistance Junction-to-Ambient, ΘJA 163°C/W Parameter Conditions Min. Typ. Max. Units Switching Regulator Supply, VCCA 4.75 5 5.25 V Ambient Operating Temperature, TA 070 °C Gate Drive Supply, VCCP 9.5 12 12.6 V CEXT VCCA IFBH VCCP DRV GNDP 1 2 3 8 7 6 IFBL VFB FAN5037 45 |
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