Datasheet BL8531 (Belling) - 3

BL8531 RECOMMENDED WORK CONDITIONS Item Min Recommended Max. Unit Input Voltage Range 0.8 Vout V Inductor 10 27 100 μH Input Capacitor 0 ≥10 μF Output Capacitor 47 100 220 μF Ambient Temperature -40 85 °C ELECTRICAL CHARACTERISTICS REFERENCE DATA SYMBOL ITEM TEST CONDITIONS UNIT Min Typ Max 2.45 2.5 2.55 2.646 2.7 2.754 2.94 3.0 3.06 3.234 3.3 3.366 Vout Output Voltage V 3.528 3.6 3.672 3.92 4.0 4.08 4.9 5.0 5.1 5.88 6.0 6.12 Vin Input Voltage Vout V Iout=0mA， Iin Input Current 12 15 uA Vin=Vout*0.6 Iout=1mA， Vstart Start-up voltage 0.8 0.9 V Vin：0→2V Iout=1mA， Vhold Hold-on voltage 0.6 0.7 V Vin：2→0V Quiescent current Without external IDD drawn from power components, Vout 4 7 uA source =Vout×1.05 Switch ON Rswon 0.5 Ω Resistance ILXleak LX leakage current Vout=Vlx=6.5V 0.5 5 uA CE “H” threshold VCEH V ：0→2V 0.8 V voltage CE CE “H” threshold VCEL V ： 2→0V 0.3 V voltage CE Oscillator LX on “L” side Fosc 400 Khz frequency Vout=Vout*0.96 Oscillator duty Maxdty On（Vlx“L”）side 70 75 80 ％ cycle η Efficiency 85 ％ Note： 1. Diode: Schottky type, such as: 1N5817, 1N5819, 1N5822 2. Inductor: 27uH(R<0.5Ω) 3. Capacitor: 100uF(Tantalum type) www.belling.com.cn 3