Data Sheet 3.3V/ 300mA Output Step-down DC/DC Converter(Non-isolated) BP5224-33 Absolute Maximum Ratings Unit V °C °C °C mA Vi Topr Tstg Tcmax Iopeak 9.7Max. 17.8Max. BP5224-33 Marking side Limits 18.1Max. Symbol 4.0±1.0 Parameter Input voltage Operating temperature Storage temperature Maximum surface temperature Maximum output current Dimensions (Unit : mm) 1 2 4 5 6 0.5±0.1 3.3Max. P=2.54±0.2 Electrical Characteristics 3.65Max. 6.05Max. 2.54x5=12.7(TYP.) Min. Typ. Max. Unit V V mA V V Vp-p % Conditions DC Derating Curve Derating Curve 350 Vi=7 to 18V Io=0 to 300mA Output Current Io(A) Symbol Parameter Input voltage Output voltage Output current Line regulation Load regulation Output ripple voltage Power conversion efficiency 0.25±0.05 1.3±0.2 300 250 200 150 100 50 0 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Ambient Temperature Ta(°C) Conversion Efficiency Application Circuit Pin No. 1 2 3 4 5 6 BP5224-33 1 2 4 5 6 Conversion Efficiency (Ta=25°C, Vi=16V) 100 90 80 70 60 50 40 30 20 10 0 Function Input terminal Vi Input terminal Vi Skip GND GND Output terminal Vo Be sure to use fuse for safety. 50 F1 100 150 200 250 300 Output Current Io(A) VI C2 Load Regulation Vo Please verify operation and characteristics in the customer's circuit before actual usage. Ensure that the load current does not exceed the maximum rating. External Component Specifications Output Voltage Vo(V) C1 Load Regulation (Ta=25°C) 4.0 3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 VI =7V VI =16V 0 F1: FUSE Be sure to use a fuse for safety. 50 100 150 200 250 Output Current Io(A) 300 C1: Input capacitor C2: Output capacitor www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1/1 2010.03 - Rev. B