1/7 non-isolated step-down 3-terminal dc/dc converters BP5275-18 / bp5275-25 / bp5275-33 / bp5275-50 data sheet 2011.08 - rev. a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. bp5275 ? 18 bp5275 ? 25 bp5275 ? 33 4.5 to 14 4.5 to 14 5.0 to 14 v 1.8 2.5 3.3 v 500 / 800 500 / 800 500 / 800 ma bp5275 ? 50 bp5275 ? 18 bp5275 ? 25 bp5275 ? 33 bp5275 ? 50 6.0 to 14 5.0 73 78 83 88 500 / 800 % unit parameter symbol limits unit v in v i o 1max i o 2max c c topr tstg tcmax c c c 23.0 max 13.8 max 2xc0.5 c0.5 5.2 0.5 4.0 1.0 2.6 4.2 5.2 20.3 2.54 0.2 0.75 2.54 0.2 1.3 pin no.1 2 3 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). description dimensions (unit : mm) applications features list of the series absolute maximum ratings (ta=25 c) power supplies for copiers, personal computers, facsimiles, av equipment, measuring instruments, vending machines, security device, registers, industrial equipment, and maintenance tools 7) compact package. BP5275-18 / bp5275-25 / bp5275-33 / bp5275-50 : sip3 2) high power conversion efficiency. 3) heat sink unnecessary. input voltage input voltage operating temperature range storage temperature range allowable maximum surface temperature maximum output current 1 maximum output current 2 (with heat sink) output voltage power conversion efficiency (vin=12v) maximum output current (no heat sink / include heat sink) note : dimensions without tolerance is typical. 1) no external parts required 4) low output ripple voltage 5) high output voltage accuracy 6) pin-compatible with conventional 3-pin ldos 15 ? 30 to 85 ? 40 to 105 100 500 800 15 ? 30 to 85 ? 40 to 105 100 500 800 15 ? 30 to 85 ? 40 to 105 100 500 800 15 ? 30 to 85 ? 40 to 105 100 500 800 www.datasheet.co.kr datasheet pdf - http://www..net/
2/7 2011.08 - rev. a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. data sheet BP5275-18 / bp5275-25 / bp5275-33 / bp5275-50 bp5275 ? 18 (unless otherwise noted : ta=25 c, vin=12v, lo1=500ma) parameter symbol unit conditions min. typ. max. input voltage output voltage output current 1 output current 2 line regulation load regulation output ripple voltage minimum start-up time conversion efficiency input voltage output voltage output current 1 output current 2 line regulation load regulation output ripple voltage minimum start-up time conversion efficiency vin 4 1.75 0 0 4 65 12 1.80 5 10 5 7 73 14 1.85 500 800 50 50 80 v v o v i o 1 vl i o 2 ma ma vr mv vp ts f mhz 1.5 mv msec i o =0 to 500ma vin=0v 3v,ro=3.6 vin=4 to 14v mv p-p ? ? % i o 1=0ma ? ? ? ?? ? ? ? dc ? 1 ? 1 bp5275-25 (unless otherwise noted : ta=25 c, vin=12v, lo1=500ma) ? 1 derating required according to the input voltage and ambient temperature. parameter symbol unit conditions min. typ. max. vin 4 2.45 0 0 4 73 12 2.50 5 10 5 7 78 14 2.55 500 800 50 50 50 v v o v i o 1 vl i o 2 ma ma vr mv vp ts mv msec i o 1=0 to 500ma vin=3v 4v,ro=5 vin=4 to 14v mv p-p ? ? % i o 1=0ma ? ? ? ? ? ? dc ? 1 ? 1 ? 1 derating required according to the input voltage and ambient temperature. with heat sink with heat sink block diagram electrical characteristics operation frequency f mhz 1.5 ?? operation frequency control circuit 1 2 3 v a a v v vin vin gnd vout gnd io measurement circuit www.datasheet.co.kr datasheet pdf - http://www..net/
3/7 2011.08 - rev. a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. data sheet BP5275-18 / bp5275-25 / bp5275-33 / bp5275-50 bp5275 ? 33 (unless otherwise noted :ta=25 c, vin=12v, lo1=500ma) parameter symbol unit conditions min. typ. max. vin 4.5 3.23 0 0 4 78 12 3.30 5 10 5 7 83 14 3.37 500 800 50 50 50 v v o v i o 1 vl i o 2 ma ma with heat sink vr mv vp ts mv msec i o =0 to 500ma vin=3v 4.5v,ro=6.6 vin=4.5 to 14v mv p-p ? ? % i o 1=0ma ? ? ? ? ? ? dc ? 1 ? 1 bp5275-50 (unless otherwise noted : ta=25 c, vin=12v, lo1=500ma) parameter symbol unit conditions min. typ. max. vin 6 4.9 0 0 4 83 12 5.0 5 10 5 7 88 14 5.1 500 800 50 50 50 v v o v i o 1 vl i o 2 ma ma vr mv vp ts mv msec i o 1=0 to 500ma vin=3v 6v,ro=10 vin=6 to 14v mv p-p ? ? % i o 1=0ma ? ? ? ? ? ? dc ? 1 ? 1 electrical characteristics with heat sink ? 1 derating required according to the input voltage and ambient temperature. ? 1 derating required according to the input voltage and ambient temperature. input voltage output voltage output current 1 output current 2 line regulation load regulation output ripple voltage minimum start-up time conversion efficiency input voltage output voltage output current 1 output current 2 line regulation load regulation output ripple voltage minimum start-up time conversion efficiency f mhz 1.5 ?? operation frequency f mhz 1.5 ?? operation frequency ? 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 c ircuit. 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.datasheet.co.kr datasheet pdf - http://www..net/
4/7 2011.08 - rev. a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. data sheet BP5275-18 / bp5275-25 / bp5275-33 / bp5275-50 ? BP5275-18 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 1.84 1.85 0 100 200 300 400 500 0 10 20 30 40 50 60 70 80 90 100 0 100 200 500 400 300 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 1.84 1.85 0246810121416 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 1.84 1.85 0 100 200 300 400 500 vin= 6v vin=12v vin=14v vin= 6v vin=12v vin=14v ta = 8 0 c ta = 2 5 c ta = ? 35 c ta = 8 0 c ta = 2 5 c ta = ? 35 c output current io [ < ] output voltage vo [v] power conversion efficiency fluctuation ta=25 c output current io [ < ] power conversion efficiency [%] line regulation output voltage vo [v] output voltage vs. temperature fluctuation vin=12v output voltage vo [v] intput voltage vin [v] output current io [ < ] output voltage vs. input voltage fluctuation ta=25 c 0 100 200 300 400 500 600 65 ? operation range 333ma 250ma 75 ? -40 -20 0 20 40 60 80 100 vin=10v ?< vin=12v vin=14v 0 200 400 600 800 1000 -40 -20 0 20 40 60 80 100 vin=12v ?< vin=14v operation range r r operation range 550ma 76 ? ambient temperature ta [ c ] load current io1 [ma] derating curve (no heat sink) derating curve (with heat sink) load current io2 [ma] ambient temperature ta [ c ] www.datasheet.co.kr datasheet pdf - http://www..net/
5/7 2011.08 - rev. a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. data sheet BP5275-18 / bp5275-25 / bp5275-33 / bp5275-50 ? bp5275-25 2.45 2.46 2.47 2.48 2.49 2.50 2.51 2.52 2.53 2.54 2.55 0 100 200 300 400 500 0 10 20 30 40 50 60 70 80 90 100 2.45 2.46 2.47 2.48 2.49 2.50 2.51 2.52 2.53 2.54 2.55 0 100 200 300 400 500 c ta = 2 5 c ta = ? 35 c ta = 8 0 c ta = 2 5 c ta = ? 35 c 0246810121416 output current io [ < ] output voltage vo [v] power conversion efficiency fluctuation ta=25 c output current io [ < ] power conversion efficiency [%] line regulation output voltage vo [v] output voltage vs. temperature fluctuation vin=12v output voltage vo [v] intput voltage vin [v] output current io [ < ] output voltage vs. input voltage fluctuation ta=25 c 0 100 200 300 400 500 600 65 ? operation range 333ma 250ma 75 ? -40 -20 0 20 40 60 80 100 vin=10v ?< vin=12v vin=14v 0 200 400 600 800 1000 -40 -20 0 20 40 60 80 100 vin=12v ?< vin=14v operation range r r operation range 528ma 74 ? ambient temperature ta [ ? ] load current io1 [ma] load current io2 [ma] ambient temperature ta [ ? ] 0 100 200 500 400 300 derating curve (no heat sink) derating curve (with heat sink) www.datasheet.co.kr datasheet pdf - http://www..net/
6/7 2011.08 - rev. a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. data sheet BP5275-18 / bp5275-25 / bp5275-33 / bp5275-50 ? bp5275-33 3.20 3.22 3.24 3.26 3.28 3.30 3.32 3.34 3.36 3.38 3.40 0 100 200 300 400 500 0 10 20 30 40 50 60 70 80 90 100 3.20 3.22 3.24 3.26 3.28 3.30 3.32 3.34 3.36 3.38 3.40 0 100 200 300 400 500 output current io [ < ] output voltage vo [v] power conversion efficiency fluctuation ta=25 c output current io [ < ] power conversion efficiency [%] line regulation output voltage vo [v] output voltage vs. temperature fluctuation vin=12v output voltage vo [v] intput voltage vin [v] output current io [ < ] output voltage vs. input voltage fluctuation ta=25 c 0 100 200 300 400 500 600 65 ? operation range 333ma 250ma 75 ? -40 -20 0 20 40 60 80 100 vin=10v ?< vin=12v vin=14v 0 200 400 600 800 1000 -40 -20 0 20 40 60 80 100 vin=12v ?< vin=14v operation range r r operation range 505ma 73 ? ambient temperature ta [ ? ] load current io1 [ma] load current io2 [ma] ambient temperature ta [ ? ] 0 100 200 500 400 300 vin= 6v vin=12v vin=14v vin= 6v vin=12v vin=14v ta = 8 0 c ta = 2 5 c ta = ? 35 c ta = 8 0 c ta = 2 5 c ta = ? 35 c derating curve (no heat sink) derating curve (with heat sink) www.datasheet.co.kr datasheet pdf - http://www..net/
7/7 2011.08 - rev. a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. data sheet BP5275-18 / bp5275-25 / bp5275-33 / bp5275-50 ? bp5275-50 output voltage vs. input voltage fluctuation ta=25 c 4.90 4.92 4.94 4.96 4.98 5.00 5.02 5.04 5.06 5.08 5.10 0 100 200 300 400 500 0 10 20 30 40 50 60 70 80 90 100 4.90 4.92 4.94 4.96 4.98 5.00 5.02 5.04 5.06 5.08 5.10 :?:?:?:? :?:?:?:? :?:?:?:? :?:?:?:? :?:?:?:? :?:?:?:? :?:?:?:? :?:?:?:? :?:?:?:? :?:?:?:? :?:?:?:? :? :?:?:? :?:?:? :?:?:? :?:?:? :?:?:? output current io [ < ] output voltage vo [v] power conversion efficiency fluctuation ta=25 c output current io [ < ] power conversion efficiency [%] line regulation output voltage vo [v] output voltage vs. temperature fluctuation vin=12v output voltage vo [v] vin= 6v vin=12v vin=14v vin= 6v vin=12v vin=14v ta = 8 0 c ta = 2 5 c ta = ? 35 c ta = 8 0 c ta = 2 5 c ta = ? 35 c 0246810121416 intput voltage vin [v] output current io [ < ] 0 100 200 300 400 500 600 65 ? operation range 333ma 250ma 75 ? -40 -20 0 20 40 60 80 100 ambient temperature ta [ ? ] load current io1 [ma] vin=10v ?< vin=12v vin=14v 0 200 400 600 800 1000 -40 -20 0 20 40 60 80 100 vin=12v ?< vin=14v operation range r r operation range 480ma 72 ? load current io2 [ma] ambient temperature ta [ ? ] 0 100 200 500 400 300 derating curve (no heat sink) derating curve (with heat sink) www.datasheet.co.kr datasheet pdf - http://www..net/
www.datasheet.co.kr datasheet pdf - http://www..net/
r1120 a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. 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. the technical information specified herein is intended only to show the typical functions of and examples of application circuits for the produc ts. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specified in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any product, such as derating, redundancy, fire control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specified herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law. www.datasheet.co.kr datasheet pdf - http://www..net/
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