Data Sheet
18V/500mA Output
Step-down DC/DC Converter(Non-isolated)
BP5226-18
Absolute Maximum Ratings
Parameter Input ...
Data Sheet
18V/500mA Output
Step-down DC/DC Converter(Non-isolated)
BP5226-18
Absolute Maximum Ratings
Parameter Input
voltage Operating temperature range Storage temperature range Maximum surface temperature Maximum output current Symbol
Vi Topr Tstg
Dimensions (Unit :mm)
Limits Unit V Conditions DC Refer to derating curve (Ambient temperature + the module self-heating) Tcmax
°C °C °C
mApk
Tcmax Iomax
Electrical Characteristics
Symbol Parameter Input
voltage range Output
voltage Output current Line regulation Load regulation Output ripple
voltage CTL pin OFF
voltage CTL pin ON
voltage CTL terminal pull-up resistance Power conversion efficiency Min. Typ. Max. Unit Conditions DC Vi=34V, Io=500mA Vi=34V Vi=20 to 46V, Io=500mA Vi=34V, Io=0 to 500mA Vi=34V, Io=500mA SW1 OFF (VoOFF) SW1 ON (VoON)
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Derating Curve
600 Output Current Io(mA) 500 400 300 200 100 0 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Ambient Temperature Ta(°C) Operation Range Derating Curve
Conversion Efficiency
100 80 60 Conversion Efficiency (Ta=25°C, Vi=34V)
Vi=34V, Io=500mA
Application Circuit
BP5226-18
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Function Output terminal:Vo(18V) CTL terminal Power inductor terminal Skip Power inductor terminal Skip COMMON Skip Skip Input terminal N.C. Input terminal
40 20 0 0 100 200 300 400 Output Current Io(mA) 500
1211 10
7
5
321 Io
Load Regulation
20.0 18.0 16.0 14.0 12.0 10.0 8.0 6.0 4.0 2.0 0 Load Regulation (Ta=25°C, Vi=12V) Output
Voltage Vo(V)
...