BP5275-25

Data Sheet Non-Isolated Step-Down 3-Terminal DC/DC Converters BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50 Description The BP5275 series of DC/DC converters utilize a synchronous rectification system. A control circuit, switching element, and coil are built in, along with input/output capacitors, resulting in stable operation with no external components required. 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 TO-220 LDO regulators, making replacement easy. Low ripple voltage with high precision output ensure stable operation against the fluctuating voltages from main power supplies, making them ideal for use as local power supplies (i.e. for microcontrollers). Applications Power supplies for copiers, personal computers, facsimiles, AV equipment, measuring instruments, vending machines, security device, registers, industrial equipment, and maintenance tools Features 1) No external parts required 2) High power conversion efficiency. 3) Heat sink unnecessary. 4) Low output ripple voltage 5) High output voltage accuracy 6) Pin-compatible with conventional 3-pin LDOs 7) Compact package. BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50 : SIP3 List of the series BP5275−18 Input voltage Output voltage Maximum output current (no heat sink / include heat sink) Power conversion efficiency (Vin=12V) 4.5 to 14 1.8 500 / 800 73 BP5275−25 4.5 to 14 2.5 500 / 800 78 BP5275−33 5.0 to 14 3.3 500 / 800 83 BP5275−50 6.0 to 14 5.0 500 / 800 88 Unit V V mA % Dimensions (Unit : mm) 4.2 5.2 13.8 MAX 2xC0.5 2.6 5.2 C0.5 4.0±1.0 23.0 MAX 20.3 2.54±0.2 Pin No.1 2 3 0.75 1.3 2.54±0.2 0.5 Note : Dimensions without tolerance is typical. Absolute maximum ratings (Ta=25°C) Parameter Input voltage Operating temperature range Storage temperature range Allowable maximum surface temperature Maximum output current 1 Maximum output current 2 (with Heat Sink) Symbol VIn Topr Tstg Tcmax IO1max IO2max Limits BP5275−18 15 −30 to 85 −40 to 105 100 500 800 BP5275−25 15 −30 to 85 −40 to 105 100 500 800 BP5275−33 15 −30 to 85 −40 to 105 100 500 800 BP5275−50 15 −30 to 85 −40 to 105 100 500 800 Unit V °C °C °C °C °C www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 1/7 2011.08 - Rev. A BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50 Data Sheet Block diagram Measurement circuit Control Circuit 123 Vin Io A V A Vout Vin V V GND GND Electrical characteristics BP5275−18 (Unless otherwise noted : Ta=25°C, Vin=12V, lo1=500mA) Parameter Input voltage Output voltage Output current 1 Output current 2 Line regulation Load regulation Output ripple voltage Minimum start-up time Conversion efficiency Operation frequency Symbol Vin VO IO1 IO2 Vr Vl Vp Ts  f Min. 4 1.75 0 0    4 65  Typ. 12 1.80   5 10 5 7 73 1.5 Max. 14 1.85 500 800 50 50 80    Unit V V mA mA mV mV mVP-P msec % MHz Vin=0V 3V,Ro=3.6Ω With heat sink Vin=4 to 14V IO=0 to 500mA DC IO1=0mA 1 1 Conditions 1 Derating required according to the input voltage and ambient temperature. BP5275-25 (Unless otherwise noted : Ta=25°C, Vin=12V, lo1=500mA) Parameter Input voltage Output voltage Output current 1 Output current 2 Line regulation Load regulation Output ripple voltage Minimum start-up time Conversion efficiency Operation frequency Symbol Vin VO IO1 IO2 Vr Vl Vp Ts  f Min. 4 2.45 0 0    4 73  Typ. 12 2.50   5 10 5 7 78 1.5 Max. 14 2.55 500 800 50 50 50    Unit V V mA mA mV mV mVP-P msec % MHz Vin=3V 4V,Ro=5Ω With heat sink Vin=4 to 14V IO1=0 to 500mA DC IO1=0mA 1 1 Conditions 1 Derating required according to the input voltage and ambient temperature. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 2/7 2011.08 - Rev. A BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50 Electrical characteristics BP5275−33 (Unless otherwise noted :Ta=25°C, Vin=12V, lo1=500mA) Parameter Input voltage Output voltage Output current 1 Output current 2 Line regulation Load regulation Output ripple voltage Minimum start-up time Conversion efficiency Operation frequency Symbol Vin VO IO1 IO2 Vr Vl Vp Ts  f Min. 4.5 3.23 0 0    4 78  Typ. 12 3.30   5 10 5 7 83 1.5 Max. 14 3.37 500 800 50 50 50    Unit V V mA mA mV mV mVP-P msec % MHz Vin=3V 4.5V,Ro=6.6Ω With heat sink Vin=4.5 to 14V IO=0 to 500mA DC IO1=0mA 1 1 Data Sheet Conditions 1 Derating required according to the input voltage and ambient temperature. BP5275-50 (Unless otherwise noted : Ta=25°C, Vin=12V, lo1=500mA) Parameter Input voltage Output voltage Output current 1 Output current 2 Line regulation Load regulation Output ripple voltage Minimum start-up time Conversion efficiency Operation frequency Symbol Vin VO IO1 IO2 Vr Vl Vp Ts  f Min. 6 4.9 0 0    4 83  Typ. 12 5.0   5 10 5 7 88 1.5 Max. 14 5.1 500 800 50 50 50    Unit V V mA mA mV mV mVP-P msec % MHz Vin=3V 6V,Ro=10Ω With heat sink Vin=6 to 14V IO1=0 to 500mA DC IO1=0mA 1 1 Conditions 1 Derating required according to the input voltage and ambient temperature. ●OPERATION NOTES ・This module will stop outputting because of protection circuit when the input voltage becomes maximum input voltage or less. Please note that the input voltage must not become maximum input voltage in any state of the load. ・After the circuit starts, the output voltage needs to become the fixed voltage within minimum activation time. If the output voltage is below the fixed voltage after the minimum activation time, it doesn’t work because of the protection circuit. Please evaluate sufficiently about activation characteristics of input voltage and load characteristics when starting. ・When the output circuit shorts, short-circuit protection of timer-latch type will work and stop outputting. To release the protection, it is necessary to turn on the switch again. This product also has protection element for safety. The protection element is fused if the current, with which the protection element will fuse, will be input by the time the short-circuit protection of timer-latch hangs. Please evaluate sufficiently at using environment about the action when the output circuit shorts. ・There are some case that the heat generates at the module by exceeding allowable maximum surface temperature when the load current which exceeds the maximum output current is electrified. Please make design keeping enough margins not to exceed allowable maximum surface temperature at any time under any application or any test conditions. ・The heat sink at back parts of the product is connected to GND. Please mind the arrangement not to contact with surrounding parts. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 3/7 2011.08 - Rev. A BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50 ●BP5275-18 Data Sheet Line Regulation Output Voltage vs. Temperature Fluctuation（ Vin=12V） 1.85 1.84 Output Voltage Vo [V] 1.83 1.82 1.81 1.80 1.79 1.78 1.77 1.76 1.75 0 100 1.85 1.84 1.83 Output Voltage Vo [V] 1.82 1.81 1.80 1.79 1.78 1.77 1.76 1.75 0 2 4 6 8 10 Intput Voltage Vin [V] Ta= 80°C Ta= 25°C Ta=−35°C 12 14 16 Ta= 80°C Ta= 25°C Ta=−35°C 200 300 400 Output Current Io [ ｍＡ ] 500 Output Voltage vs. Input Voltage Fluctuation（ Ta=25°C） 1.85 Power Conversion Efficiencyη[%] 1.84 1.83 Output Voltage Vo [V] 1.82 1.81 1.80 1.79 1.78 1.77 1.76 1.75 0 100 200 300 400 Output Current Io [ｍＡ] 500 Power Conversion Efficiency Fluctuation（ Ta=25°C） 100 90 80 70 60 50 40 30 20 10 0 0 100 200 300 400 Output Current Io [ｍＡ] 500 Vin= 6V Vin=12V Vin=14V Vin= 6V Vin=12V Vin=14V Derating Curve (No heat sink) 600 Vin=10V以下 Vin=12V Vin=14V Derating Curve (With heat sink) 1000 76℃ Vin=12V 以下 Vin=14V 500 65 ℃ 75 ℃ 800 Load Current Io1 [mA] 400 Load Current Io2 [mA] 600 550mA 333mA 300 OPERATION R R RANGE 200 250mA 400 OPERATION RANGE 200 100 0 -40 -20 0 20 40 60 80 100 0 -40 -20 0 20 40 60 80 100 Ambient Temperature Ta [°C] Ambient Temperature Ta [°C] www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 4/7 2011.08 - Rev. A BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50 ●BP5275-25 Data Sheet Line Regulation 2.55 2.54 2.53 Output Voltage vs. Temperature Fluctuation（ Vin=12V） 2.55 2.54 2.53 Output Voltage Vo [V] 2.52 2.51 2.50 2.49 2.48 2.47 2.46 2.45 0 100 Output Voltage Vo [V] 2.52 2.51 2.50 2.49 2.48 2.47 2.46 2.45 Ta= 80°C Ta= 25°C Ta=−35°C 2 4 6 8 10 12 14 16 Ta= 80°C Ta= 25°C Ta=−35°C 200 300 400 Output Current Io [ ｍＡ ] 500 0 Intput Voltage Vin [V] Output Voltage vs. Input Voltage Fluctuation（ Ta=25°C） 2.55 2.54 Power Conversion Efficiencyη[%] 2.53 Output Voltage Vo [V] 2.52 2.51 2.50 2.49 2.48 2.47 2.46 2.45 0 100 200 300 400 Output Current Io [ｍＡ] 500 Power Conversion Efficiency Fluctuation（ Ta=25°C） 100 90 80 70 60 50 40 30 20 10 0 0 100 200 300 400 500 Output Current Io [ｍＡ] Vin= 6V Vin=12V Vin=14V Vin= 6V Vin=12V Vin=14V Derating Curve (No heat sink) 600 Vin=10V以下 Vin=12V Vin=14V Derating Curve (With heat sink) 1000 74℃ Vin=12V 以下 Vin=14V 500 65 ℃ 75 ℃ 800 Load Current Io1 [mA] 400 Load Current Io2 [mA] 600 528mA 333mA 300 OPERATION RANGE R R 200 250mA 400 OPERATION RANGE 200 100 0 -40 -20 0 20 40 60 80 100 0 -40 -20 0 20 40 60 80 100 Ambient Temperature Ta [ ℃] Ambient Temperature Ta [ ℃] www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 5/7 2011.08 - Rev. A BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50 ●BP5275-33 Data Sheet Line Regulation 3.40 3.38 3.36 Output Voltage vs. Temperature Fluctuation（ Vin=12V） 3.40 3.38 3.36 Output Voltage Vo [V] 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 0 100 200 300 Output Voltage Vo [V] 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 Ta= 80°C Ta= 25°C Ta=−35°C 0 2 4 6 8 10 12 14 16 Ta= 80°C Ta= 25°C Ta=−35°C 400 500 Intput Voltage Vin [V] Output Current Io [ ｍＡ ] Output Voltage vs. Input Voltage Fluctuation（ Ta=25°C） 3.40 3.38 Power Conversion Efficiencyη[%] 3.36 Output Voltage Vo [V] 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 0 100 200 300 400 500 Output Current Io [ｍＡ] Power Conversion Efficiency Fluctuation（ Ta=25°C） 100 90 80 70 60 50 40 30 20 10 0 0 100 200 300 400 500 Output Current Io [ｍＡ] Vin= 6V Vin=12V Vin=14V Vin= 6V Vin=12V Vin=14V Derating Curve (No heat sink) 600 Vin=10V以下 Vin=12V Vin=14V Derating Curve (With heat sink) 1000 73℃ Vin=12V 以下 Vin=14V 500 65 ℃ 75 ℃ 800 Load Current Io1 [mA] 400 Load Current Io2 [mA] 600 505mA 333mA 300 OPERATION RANGE R R 200 250mA 400 OPERATION RANGE 200 100 0 -40 -20 0 20 40 60 80 100 0 -40 -20 0 20 40 60 80 100 Ambient Temperature Ta [ ℃] Ambient Temperature Ta [ ℃] www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 6/7 2011.08 - Rev. A BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50 ●BP5275-50 Data Sheet Line Regulation 5.10 5.08 5.06 Output Voltage Vo [V] Output Voltage Vo [V] Output Voltage vs. Temperature Fluctuation（ Vin=12V） 5.10 5.08 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 0 100 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 0 2 4 6 8 10 12 Intput Voltage Vin [V] Ta= 80°C Ta= 25°C Ta=−35°C 14 16 Ta= 80°C Ta= 25°C Ta=−35°C 200 300 400 Output Current Io [ ｍＡ ] 500 Output Voltage vs. Input Voltage Fluctuation（ Ta=25°C） 5.10 5.08 Power Conversion Efficiencyη[%] 5.06 Output Voltage Vo [V] 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 0 100 200 300 400 Output Current Io [ｍＡ] 500 Power Conversion Efficiency Fluctuation（ Ta=25°C） 100 90 80 70 60 50 40 30 20 10 0 0 100 200 300 400 500 Output Current Io [ｍＡ] Vin= 6V Vin=12V Vin=14V Vin= 6V Vin=12V Vin=14V Derating Curve (No heat sink) 600 Vin=10V以下 Vin=12V Vin=14V Derating Curve (With heat sink) 1000 72℃ Vin=12V 以下 Vin=14V 500 65 ℃ 75 ℃ 800 Load Current Io1 [mA] 400 Load Current Io2 [mA] 600 480mA 333mA 300 OPERATION RANGE R R 200 250mA 400 OPERATION RANGE 200 100 0 -40 -20 0 20 40 60 80 100 0 -40 -20 0 20 40 60 80 100 Ambient Temperature Ta [ ℃] Ambient Temperature Ta [ ℃] www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 7/7 2011.08 - Rev. A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. 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