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BL8505

SHANGHAI BELLING
Part Number BL8505
Manufacturer SHANGHAI BELLING
Description High Efficiency PFM Step-up DC/DC Converter
Published Dec 18, 2006
Detailed Description www.DataSheet4U.com BL8505 High Efficiency PFM Step-up DC/DC Converter Outline Features Applications Selection Guide ...
Datasheet PDF File BL8505 PDF File

BL8505
BL8505

Overview
www.
DataSheet4U.
com BL8505 High Efficiency PFM Step-up DC/DC Converter Outline Features Applications Selection Guide BL8505 XX X XX package Pin Configurations Function description Output voltage www.
belling.
com.
cn Ver1.
1 1/10 BL8505 Pin Description: Pin No.
SOT-89-3 TO-92 SOT-23-3 SOT-89-5 SOT-23-5 Symbol Description Product List: Product Name Output Voltage LX Tr.
Driver Chip Enable Package Block Diagram Absolute Maximum Ratings: www.
belling.
com.
cn Ver1.
1 2/10 BL8505 Recommended Operating Conditions: Min Nom Max Unit *Suggestion Electrical Characteristics: Symbol Item Test Conditions Min Reference Data Typ.
Max Unit www.
belling.
com.
cn Ver1.
1 3/10 BL8505 Typical Characteristics Detailed Description: Selection Of The External Components: D 1 Inductor Selection Vout Vin Vout www.
belling.
com.
cn Ver1.
1 4/10 BL8505 L min D(1 D) RL 2f 2 Lmin D Vin Lf Vin Im ax (1 D) 2 RL I DVin 2 Lf rL Rload (1 D) 2 2 Capacitor Selection r Vout Vout D Rload Cf r' r Im ax RESR Vout 3 Diode Selection www.
belling.
com.
cn Ver1.
1 5/10 BL8505 4 Input Capacitor Test Circuits 3 www.
belling.
com.
cn Ver1.
1 6/10 BL8505 Typical Characteristics L=10uH 3.
5 3.
4 Vin=0.
9V Vin=1.
0V Vin=1.
5V Vin=1.
8V Vin=2.
0V Output Voltage(V) 3.
3 3.
2 3.
1 3 2.
9 2.
8 2.
7 0 50 100 150 200 250 300 350 400 450 500 Output Current(mA) www.
belling.
com.
cn Ver1.
1 7/10 BL8505 L=10uH 100 (%) 90 80 70 60 50 0 50 100 150 200 250 300 350 400 Vin=0.
9V Vin=1.
0V Vin=1.
5V Vin=1.
8V Vin=2.
0V 450 500 Efficiency Output Current(mA) L=47uH 3.
5 3.
4 Output Voltage(V) 3.
3 3.
2 3.
1 3 2.
9 2.
8 2.
7 0 50 100 150 200 250 300 350 400 Vin=0.
9V Vin=1.
0V Vin=1.
5V Vin=1.
8V Vin=2.
0V 450 500 Output Current(mA) L=47uH 100 (%) Efficiency 90 80 Vin=0.
9V 70 60 50 0 50 100 150 200 250 300 350 400 Vin=1.
0V Vin=1.
5V Vin=1.
8V Vin=2.
0V Vin=2.
5V 450 500 Output Current(mA) www.
belling.
com.
cn Ver1.
1 8/10 BL8505 L=100uH 3.
3 3.
2 3.
1 3 2.
9 2.
8 2.
7 0 50 100 150 200 250 300 350 400 Outpu...


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