Data Sheet Step-down DC/DC Converters(Non-isolated) BP5220A / BP5221A / BP5222A Dimensions (Unit : mm) Description The BP5220A, BP5221A, BP5222A, are DC / DC 28.0 Max. 12.0 converters that use a pulse width modulation (PWM) Max. system. They contain control circuits, switching devices, Marked side rectifiers, and coils, and operate by only connecting an I / O smoothing capacitor. With a high efficiency of power 19.5 Max. conversion, the modules are available in stand-alone 9-pin SIP packages with no heat sink required. They can be applied to various purposes by fine-tuning Pin No.1 23456 7 9 41 0.5 the output voltage and switching on and off. With a wide 2.54 1.4 range of input voltage, the modules are best suited for 4.0 8.0 2.54x 8=20.32 Max. Max. obtaining a stable local power supply from a main power supply with a large voltage variation. Note : Dimensions without tolerance is typical. SIP9 Applications Power supplies for copiers, personal computers, facsimiles, AV equipment, measuring instruments, vending machines, security device, registers, industrial equipment, and maintenance tools Features 1) Wide input voltage range 2) High power conversion efficiency. 3) Built-in output ON / OFF switch. 4) Adjustable output voltage ensures wide compatibility 5) Few external components required. 6) Heat sink unnecessary. 7) Compact package. BP5220A / BP5221A / BP5222A : SIP9 Lineup BP5220A BP5221A BP5222A Unit Input voltage 8 to 38 8 to 38 15 to 38 V Output voltage 5 5 12 V Output current 1 0.5 0.5 A 85 84 90 Power conversion % (Vi=15V) (Vi=15V) (Vi=20V) efficiency Absolute maximum ratings (Ta=25C) Limits Parameter Symbol Unit BP5220A BP5221A BP5222A Input voltage Vi 8 to 38 8 to 38 15 to 38 V A Output current IO 1 0.5 0.5 C Operating temperature range Topr C Storage temperature range Tstg www.rohm.com 2011.10 - Rev. C 1/7 2011 ROHM Co., Ltd. All rights reserved. Marked sideBP5220A/BP5221A/BP5222A Data Sheet Block diagram BP5220A / BP5221A / BP5222A DRIVE CIRCUIT POWER SUPPLY CONTROL CIRCUIT CIRCUIT N. C. N. C. 9 7654321 Vi ADJ N. C. CTL GND VOUT FB Electrical characteristics BP5220A (Unless otherwise noted : Vi=15V, Io=0.5A, SW=1, Ta=25C) Parameter Symbol Min. Typ. Max. Unit Conditions V Input voltage Vi 8 38 Output voltage VO 4.75 5 5.25 V Output current IO 1 A Vi<30V Line regulation 27 80 mV Vi=8V to 38V 13 80 mV Io=0.1A to 1A Load regulation 22 70 mVPP Output ripple voltage % Power conversion efficiency 75 85 Io=1A Switching frequency fSW 190 kHz CTL pin ON resistance RON 4.7 Vo>4.75V CTL pin OFF resistance ROFF 200 Vo<0.1V, SW=2 BP5221A (Unless otherwise noted : Vi=15V, Io=0.25A, SW=1, Ta=25C) Symbol Parameter Min. Typ. Max. Unit Conditions Input voltage Vi 8 38 V Output voltage VO 4.75 5 5.25 V Output current IO 0.5 A Line regulation 13 50 mV Vi=8V to 38V Load regulation 350 mV Io=0.05A to 0.5A Output ripple voltage 25 70 mVPP Power conversion efficiency 70 84 % Io=1A Switching frequency fSW 190 kHz CTL pin ON resistance RON 4.7 Vo>4.75V ROFF Vo<0.1V, SW=2 CTL pin OFF resistance 200 www.rohm.com 2/7 2011.10 - Rev. C 2011 ROHM Co., Ltd. All rights reserved.