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BL8508

SHANGHAI BELLING
Part Number BL8508
Manufacturer SHANGHAI BELLING
Description White LED driver circuit
Published Apr 13, 2015
Detailed Description BL8508 LED 26 LED LED LED BL8508 900kHz 0.22uF PCB 92mV BL8508 SOT-23-5 : BL8508 LED • LED • 80% • 3V 4 ...
Datasheet PDF File BL8508 PDF File

BL8508
BL8508

Overview
BL8508 LED 26 LED LED LED BL8508 900kHz 0.
22uF PCB 92mV BL8508 SOT-23-5 : BL8508 LED • LED • 80% • 3V 4 LED • 5V 6 LED • 36V • 2V • 900kHz • • SOT-23-5 • • PDA • • MP3 • 1 SW 2 GND 3 FB 4 CE 5 Vin www.
belling.
com.
cn Ver1.
0 1/10 BL8508 : : ---------------------------------------------------------------------------------------- -10V SW ---------------------------------------------------------------------------------------- 36V FB ----------------------------------------------------------------------------------------- 10V CE ----------------------------------------------------------------------------------------- 10V ---------------------------------------------------------------------------------------- -40~+85°C ---------------------------------------------------------------------------------------- -40~125°C ------------------------------------------------------------------------------- 260°C,10S θJA ----------------------------------------------------------------------------------------- 256°C/W : 2 6V -40 25 70 C1 1 µF C2 0.
1 0.
22 10 µF L1 10 22 47 µH www.
belling.
com.
cn Ver1.
0 2/10 BL8508 : ( Topt 25 Vin=3V Vce=3V) Vmin Vmax Vfb Iss Ioff Dmax Ilimit Fsw VCESAT ISWleak VCEH VCEL SW SW SW CE CE CE=0 ISW=250mA VSW=5V SW off C1=1µF C2=0.
22µF L1=22uH MURATA LQH-220 D1 CENTRAL SEMICONDUCTOR CMDSH-3 2.
0 82 85 0.
8 0.
95 1.
5 : 92 0.
7 0.
1 90 320 0.
9 1.
05 0.
5 V 10 V 102 mV 1.
0 mA 1.
0 uA % mA 1.
0 MHz 1.
25 V 1 uA V 0.
8 V : SW Pin1 EMI GND Pin2 FB Pin3 NMOS FET SW LED R1=92mV/ILED www.
belling.
com.
cn Ver1.
0 3/10 BL8508 ILED(mA) R1(Ω) CE Pin4 1.
5V VIN Pin5 10V 5 18.
4 10 12 9.
2 7.
67 0.
8V 3V 2V 15 6.
13 standby 20 4.
6 : BL8508 BL8508 NMOS BL8508 0.
22uF BL8508 0.
7mA ( ILED 5mA) (85%) PWM( ) BL8508 BiCMOS FB CE 2~6 LED PWM( ) 900KHz (92mV) NMOS 900KHz BL8508 NMOS PWM PWM 1µF PWM BL8508 (DCM) SW (CCM) www.
belling.
com.
cn Ver1.
0 4/10 SW SW Cj L1 SW LC f0 = 2π L1C j Cj L1 LC BL8508 SW BL8508 ...


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