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FAN5631MPX Datasheet(PDF) 5 Page - Fairchild Semiconductor |
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FAN5631MPX Datasheet(HTML) 5 Page - Fairchild Semiconductor |
5 / 13 page © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5631/FAN5632 Rev. 1.0.2 5 Electrical Characteristic VIN = 2.2V to 5.5V, IOUT = 1mA, CIN = 10µF, COUT = 10µF, CB = 1µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C. Symbol Parameter Conditions Min. Typ. Max. Units VUVLO Input Under-voltage Lockout 2 V No-load Supply Current No Switching 60 µA FAN5631, SEL to High 1.5 FAN5631, SEL to Low 1.2 FAN5632, SEL to High 1.5 VOUT Output Voltage FAN5632, SEL to Low Variable between 1.5 and 1.2 V Output Voltage Accuracy 1mA ≤ I OUT ≤ 150mA, VIN=2.7V to 5.5V -5 +5 % RLOAD Load Regulation 0mA ≤ I OUT ≤ 150mA, VIN=3.6V 0.25 mV/mA RLINE Line Regulation IOUT=0.1mA 0.2 4.0 mV/V ISD Shutdown Supply Current VEN=0V 0.1 1.0 µA ISC Output Short-circuit Current (3) VOUT ≤ 150mA 25 mA Peak Efficiency 90 % VIN at Configuration Change VIN Decreasing 2.22xVOUT V FOSC Oscillator Frequency 1.5 MHz TSD Thermal Shutdown Threshold 150 °C TSDHYS Thermal Shutdown Threshold Hysteresis 15 °C VIH Enable Logic Input High Voltage 1.3 V VIL Enable Logic Input Low Voltage 0.4 V IEN Enable Logic Input Current -1 1 µA VIH VSEL Logic Input High Voltage 1.3 V VIL VSEL Logic Input Low Voltage 0.4 V IIN VSEL Logic Input Current -1 1 µA tON VOUT Turn-On Time 1.6 ms Note: 3. The short-circuit protection is designed to protect against pre-existing short-circuit conditions, such as assembly shorts, that exist prior to device power-up. The short-circuit current limit is 25mAAverage. Short-circuit currents in normal operation are inherently limited by the on resistance of the internal FET. Since this resistance is in the range of 1 Ω, in some cases, thermal shutdown may occur. Immediately following the first thermal shutdown event, the short-circuit condition is treated as pre-existing and the load current reduces to 25mAAverage. |
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