BP5234A33 ROHM

BP5232A25/BP5232A33/BP5233A33/BP5234A33 Power Module DC / DC converter BP5232A25 / BP5232A33 / BP5233A33 / BP5234A33 The BP5232A25, BP5232A33, BP5233A33 and BP5234A33 are DC / DC converters that use PWM system and VFM system. They contain control circuits, switching devices and coils, and operate by only connecting an I/O smoothing capacitor. With a high efficiency of power conversion, the modules are available in stand-alone SIP packages with no heat sink required. z Applications Power supplies for copiers, personal computers, facsimiles, industrial equipment, and AV equipment. z Features 1) High power conversion efficiency. (BP5233A33 : 93%) 2) Large output current. 3) Low current consumption with no load. (BP5233A33 : 200A Typ.) 4) High conversion efficiency. (85% at output current of 100mA) 5) Applicable to various purposes by fine-adjusting output voltage with external circuits. 6) Built-in ON / OFF switch. 7) Heat sink unnecessary. z Absolute maximum ratings (Ta = 25C) Limits Parameter Symbol Unit BP5232A25 BP5232A33 BP5233A33 BP5234A33 V Input voltage VIN 7 22 3 4 A Output current IO C Operating temperature Topr 20 to +55 25 to +80 C Storage temperature Tstg Derating required according to the input voltage and ambient temperature. z Recommended operating conditions (Ta = 25C) Parameter Symbol Min. Typ. Max. Unit Input voltage VIN 4.5 5.0 5.5 V Rev.A 1/7 BP5232A25/BP5232A33/BP5233A33/BP5234A33 Power Module z Block diagram BP5232A25 / BP5232A33 BP5233A33 / BP5234A33 VIN=5V VIN=5V VO VO 9 2 9 2 + + + + 10 3 10 3 11 1 1 Control circuit Control circuit 7 7 CTL signal CTL signal ON / OFF ON / OFF 6 5 4 6 5 4 z Pin descriptions BP5232A25 , 5232A33 BP5233A33 , BP5234A33 Pin No. Pin No. Pin No. Pin No. Pin description Pin description Pin description Pin description 1 6 GND 1 6 GND Feed back Feed back 2 7 CTL 2 7 CTL VOUT1 VOUT1 3 9 VIN1 3 9 VIN1 VOUT2 VOUT2 10 10 4 VIN2 4 VIN2 GND GND 5 5 11 GND GND VIN3 Pin 8 is removed. Pin 8 is removed. z Electrical characteristics BP5232A25 (Unless otherwise noted, VlN=5V, IO=1A, SW=1, Ta=25C) Parameter Symbol Min. Typ. Max. Unit Conditions Measurement circuit VIN 4.5 5 5.5 V Input voltage Fig.1 VO 2.4 2.5 2.6 V Output voltage Fig.1 1 IO 2A Fig.1 Output current Current consumption at no load IIN 200 300 A Fig.1 VO 13 33 mV IO=0.1A to 2A Fig.1 Load regulation 2 33 100 mVPP Output ripple voltage Fig.1 84 89 % Power conversion efficiency Fig.1 VON 1.8 V CTL pin ON voltage Fig.1 VOFF 0.3 V SW=2 CTL pin OFF voltage Fig.1 (Alternatively, when OPEN) 1 Derating required according to the input voltage and ambient temperature. 2 Pulse noise not included. Rev.A 2/7 1000F 470F 1000F 470F