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 cur.