Emergency Lighting HT45FH4J Single Chip Solution HV Process Characteristics Input voltage : AC 220V / 50Hz Comply with GB17945-2010 standard Power consumption : < 5W Lighting time : over 90mins LED luminance : > 50 lm LED indicators ◆ ◆ ◆ AC power ready Fault Charging state Fire emergency lighting illumination When AC power stable ◆ LED lighting turns off and charges the 1.2V Ni-Cd battery When AC power is unstable ◆ The battery (1.2V Ni-Cd) is boosted to 6V and LED lighting will be turn on. 3 states LED indicator Key Self-test Key 1.2V Ni-Cd Battery Input HT45FH4J Boost / Buck Circuits AC / DC RCC Circuit Applications Fire Emergency Light Application Circuit HV 1 D1 1N4007 D2 1N4007 R4 100/1W P1 C3 D5 1N4007 1uF/400V AC 220 D6 1N4007 C1 R1 510K R3 820K 5 4 C2 T1 103/600V R5 510K R7 750K R2 D4 100k 1N4007 7 100uF/16V D3 R105 R8 100 Q1 13001 C4 104 Q2 8050 R9 10K R10 1.5K R11 10 R6 100 C5 103/600V AC voltage det. D7 6.8V HV_Vout HV 140mA U1 2 C22 104 5 VIN BZ Alert 15 5V VSS VDD 3 D11 5817 C7 104 HV_OUT C6 Boost Buck L1 1 C8 100uF/16V HV_OUT BAT_IN BT1 PA7/PWM0L 1M 10 Q3 4 BatISen R12 0.05 R23 20K 7 AN3/OCP1/PA5 C9 104 AN0/PA1 AN1/PA3 LED2 AN2/TP1/PA4 PA2/ICPCK 10 BatVD 9 AC_VD 8 D8 Green Red 11 PA2 D9 12 PA0 D10 R18 5.1K R24 LED_Isen 100 C10 104 6 13 AN4/OCP0/PA6 PA0/ICPDA HVSS HT45FH4J 16NSOP C12 1.2v Ni-Cd Y ellow S1 Check R15 330 220uF/16V LED_OUT BatISen R21 R16 0.5 47uH C11 104 14 LED 10uF/16V 16 R20 LED1 5V BZ1 G: AC power ready R: Battery Charing Y: Fault R22 0 RCC circuit