Data Sheet Non-Isolated Step-Down 3-Terminal DC/DC Converters BP5277-33 / BP5277-50 / BP5277-90 / BP5277-12 / BP5277-13 / BP5277-15 Description Dimensions (Unit : mm) The BP5275 series of DC/DC converters utilize high rated voltage. 2xC0.5 A control circuit, switching element, and coil are built in, along 6.2 MAX. 16.3 MAX. with input/output capacitors, resulting in stable operation with no external components required. C0.5 High conversion efficiency, combined with an original heat dissipation structure, enables configuration an ultra-compact switching power supplies. 500mA output is possible with no heat sink required (800mA with heat sink). In addition, the ICs are pin-compatible with conventional 12 3 TO-220 LDO regulators, making replacement easy. 0.75 Low ripple voltage with high precision output ensure stable 0.5 1.3 (2.3) 2.540.2 2.540.2 operation against the fluctuating voltages from main power Note : Dimensions without tolerance is typical. supplies, making them ideal for use as local power supplies (i.e. for microcontrollers). Pin function Pin No. Pin Name Function Applications Power supplies for copiers, personal computers, 1 Vi Input terminal facsimiles, AV equipment, measuring instruments, 2 GND GND vending machines, security device, registers, 3 Vo industrial equipment, and maintenance tools Output termial Features 1) High rated voltage 2) No external parts required 3) High power conversion efficiency. 4) Heat sink unnecessary. 5) Low output ripple voltage 6) High output voltage accuracy 7) Pin-compatible with conventional 3-pin LDOs 8) Compact package. BP5277-33 / BP5277-50 / BP5277-90 / BP5277-12 / BP5277-13 / BP5277-15 : SIP3 List of the series BP5277 33 BP527750 BP527790 BP527712 BP527713 BP527715 Unit Input voltage 36 36 36 36 36 36 V Output voltage 3.3 5 9 12 13 15 V Maximum output current 500 / 800 500 / 800 500 / 800 500 / 800 500 / 800 500 / 800 mA (no heat sink / include heat sink) Power conversion 76 83 88 90 91 93 % efficiency (Vi=24V) Absolute maximum ratings (Ta=25C) Limits Parameter Symbol Unit BP527733 BP527750 BP527790 BP5277 12 BP527713 BP527715 Input voltage 36 36 36 36 36 36 Vi V Operating temperature range 30 to 85 30 to 85 30 to 85 30 to 85 30 to 85 30 to 85 Topr C Storage temperature range 40 to 105 40 to 105 40 to 105 40 to 105 40 to 105 40 to 105 Tstg C Allowable maximum surface temperature Tcmax 100 100 100 100 100 100 C Maximum output current 1 IO1max 500 500 500 500 500 500 mA Maximum output current 2 (with Heat Sink) 800 800 800 800 800 800 IO2max mA www.rohm.com 2011.12 - Rev. A 1/9 2011 ROHM Co., Ltd. All rights reserved. Not Recommended for New Designs 4.01.0 26.4 MAX. 23.7 2.6BP5277-33 / BP5277-50 / BP5277-90 / BP5277-12 / BP5277-13 / BP5277-15 Data Sheet Block diagram Measurement circuit Vi(24V) 1 Control 1 2 3 Circuit Ii Io 3 Vo Vin Vout A A V Vi V Vo GND GND GND 2 Electrical characteristics BP527733 (Unless otherwise noted, Vi=24.0V, Io1=500mA) Parameter Symbol Min. Typ. Max. Unit Conditions Input voltage Vi 8.0 24.0 32.0 V DC Output voltage VO 3.23 3.30 3.37 V IO1=0mA Output current 1 IO1 500 mA 1 0 1 Output current 2 IO2 0 800 mA With heat sink Line regulation Vr 5 50 mV Vi=8 to 32V Load regulation Vl 5 50 mV IO=0 to 500mA Output ripple voltage 40 100 mVP-P Vp Conversion efficiency 71 76 % Operation frequency f 900 kHz 1 Max output current should be reduced according to the surrounding temperature. BP527750 (Unless otherwise noted, Vi=24.0V, Io1=500mA) Parameter Symbol Min. Typ. Max. Unit Conditions Input voltage Vi 8.0 24.0 32.0 V DC Output voltage VO 4.90 5.00 5.10 V IO1=0mA Output current 1 1 IO1 0 500 mA 1 Output current 2 IO2 0 800 mA With heat sink Line regulation Vr 5 50 mV Vi=8 to 32V Load regulation Vl 5 50 mV IO=0 to 500mA Output ripple voltage 40 100 mVP-P Vp Conversion efficiency % 78 83 Operation frequency f 900 kHz 1 Max output current should be reduced according to the surrounding temperature. BP527790 (Unless otherwise noted, Vi=24.0V, Io1=500mA) Parameter Symbol Min. Typ. Max. Unit Conditions Input voltage Vi 12.0 24.0 32.0 V DC Output voltage O V IO1=0mA V 8.80 9.00 9.20 Output current 1 1 IO1 0 500 mA 1 IO2 Output current 2 0 800 mA With heat sink Line regulation Vr 5 50 mV Vi=12 to 32V Load regulation Vl 5 50 mV IO=0 to 500mA Output ripple voltage mVP-P Vp 40 100 Conversion efficiency % 83 88 Operation frequency f 900 kHz 1 Max output current should be reduced according to the surrounding temperature. www.rohm.com 2/9 2011.12 - Rev. A 2011 ROHM Co., Ltd. All rights reserved. Not Recommended for New Designs