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BP5277-33
Technical data
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ROHM BP5277-33 Technical data

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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. 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.
23.7
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
1.0 26.4 MAX.
±
2.54±0.2
4.0
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
Pin function
Pin No.
1
2
3
Pin Name Function
Vi
GND
Vo
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
Input voltage
Output voltage
Power conversion efficiency (Vi=24V)
BP5277
36
3.3
500 / 800
76
−33
BP5277
36
5
500 / 800
83
−50
BP5277
36
9
500 / 800
88
−90
BP5277−12
36
12
500 / 800
90
BP5277
500 / 800
2xC0.5
2.6 C0.5
BP5277
36
15
500 / 800
93
6.2 MAX.
0.5
−15
16.3 MAX.
123
0.75
1.3
2.54±0.2
Note : Dimensions without tolerance is typical.
Input terminal
GND
Output termial
−13
36
13
91
(2.3)
Unit
V
V
mA
%
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)
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Symbol
Tcmax
I
O1max
IO2max
Vi
Topr
Tstg
BP5277−33
36
−30 to 85
−40 to 105
100
500
800
BP5277
36
−30 to 85
−40 to 105
100
500
800
1/9
−50
BP5277
36
−30 to 85
−40 to 105
100
500
800
−90
Limits
BP5277
36
−30 to 85
−40 to 105
100
500
800
−12
BP5277
36
−30 to 85
−40 to 105
100
500
800
−13
2011.12 -
BP5277
36
−30 to 85
−40 to 105
100
500
800
−15
Rev. A
Unit
V
°C
°C
°C
mA
mA
BP5277-33 / BP5277-50 / BP5277-90 / BP5277-12 / BP5277-13 / BP5277-15
Data Sheet
Block diagram
Vi(24V)
1
Control
GND
Circuit
2
3
Vo
Electrical characteristics
BP5277−33 (Unless otherwise noted, Vi=24.0V, Io1=500mA)
Parameter Symbol Unit ConditionsMin. Typ. Max.
Input voltage
Output voltage
Output current 1
Output current 2
Line regulation
Load regulation
Output ripple voltage
Conversion efficiency
Operation frequency
∗1 Max output current should be reduced according to the surrounding temperature.
Vi 8.0
O V
V
I
O1
I
O2
3.23
Vr
Vl
Vp
η
71
f
24.0
3.30
0
0
−
−
−
−
−
5
5
40
76
−
900
32.0
3.37
500
800
50
50
100
−
−
Measurement circuit
Ii
Vin
A
Vi
V
mA
mA
mV
mV
mV
kHz
GND
V
P-P
%
DC
IO1=0mA
With heat sink
Vi=8 to 32V
O=0 to 500mA
I
1 2 3
Io
Vout
A
V
Vo
∗1
∗1
GND
BP5277−50 (Unless otherwise noted, Vi=24.0V, Io1=500mA)
Parameter Symbol Unit ConditionsMin. Typ. Max.
Input voltage
Output voltage
Output current 1
Output current 2
Line regulation
Load regulation
Output ripple voltage
Conversion efficiency
Operation frequency
∗1 Max output current should be reduced according to the surrounding temperature.
Vi 8.0
V
O V
I
O1
I
O2
4.90
Vr
Vl
Vp
η
78
f
24.0
5.00
0
0
−
−
−
−
−
5
5
40
83
−
900
BP5277−90 (Unless otherwise noted, Vi=24.0V, Io1=500mA)
Parameter Symbol Unit ConditionsMin. Typ. Max.
Input voltage
Output voltage
Output current 1
Output current 2
Line regulation
Load regulation
Output ripple voltage
Conversion efficiency
Operation frequency
∗1 Max output current should be reduced according to the surrounding temperature.
Vi 12.0
V
O V
I
O1
I
O2
8.80
Vr
Vl
Vp
η
83
f
24.0
9.00
0
0
−
−
−
−
−
5
5
40
88
−
900
32.0
5.10
500
800
50
50
100
−
−
32.0
9.20
500
800
50
50
100
−
−
mA
mA
mV
mV
mV
kHz
mA
mA
mV
mV
mV
kHz
V
P-P
%
V
P-P
%
DC
IO1=0mA
With heat sink
Vi=8 to 32V
O=0 to 500mA
I
DC
IO1=0mA
With heat sink
Vi=12 to 32V
O=0 to 500mA
I
∗1
∗1
∗1
∗1
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2/9
2011.12 -
Rev. A
BP5277-33 / BP5277-50 / BP5277-90 / BP5277-12 / BP5277-13 / BP5277-15
Electrical characteristics
BP5277-12 (Unless otherwise noted, Vi=24.0V, Io1=500mA)
Parameter Symbol Unit ConditionsMin. Typ. Max.
Input voltage
Output voltage
Output current 1
Output current 2
Line regulation
Load regulation
Output ripple voltage
Conversion efficiency
Operation frequency
∗1 Max output current should be reduced according to the surrounding temperature.
Vi 15.0
V
O V
11.75
I
O1
I
O2
Vr
Vl
Vp
η
85
f 900
24.0
12.00
0
0
−
−
−
−
−
5
5
40
90
−
BP5277−13 (Unless otherwise noted, Vi=24.0V, Io1=500mA)
Parameter Symbol Unit ConditionsMin. Typ. Max.
Input voltage
Output voltage
Output current 1
Output current 2
Line regulation
Load regulation
Output ripple voltage
Conversion efficiency
Operation frequency
∗1 Max output current should be reduced according to the surrounding temperature.
Vi 16.5
V
O V
12.70
I
O1
I
O2
Vr
Vl
Vp
η
86
f
24.0
13.00
0
0
−
−
−
−
−
5
5
40
91
−
900
32.0
12.25
500
800
50
50
100
−
−
32.0
13.30
500
800
50
50
100
−
−
mV
mV
V
mA
mA
mV
mV
P-P
%
kHz
V
mA
mA
mV
mV
P-P
%
kHz
DC
IO1=0mA
With heat sink
Vi=15 to 32V
O=0 to 500mA
I
DC
IO1=0mA
With heat sink
Vi=16.5 to 32V
O=0 to 500mA
I
∗1
∗1
∗1
∗1
Data Sheet
BP5277−15 (Unless otherwise noted, Vi=24.0V, Io1=500mA)
Parameter Symbol Unit ConditionsMin. Typ. Max.
Input voltage
Output voltage
Output current 1
Output current 2
Line regulation
Load regulation
Output ripple voltage
Conversion efficiency
Operation frequency
∗1 Max output current should be reduced according to the surrounding temperature.
Vi 19.0
V
O V
14.70
I
O1
I
O2
Vr
Vl
Vp
η
88
f 900
24.0
15.00
0
0
−
−
−
−
−
5
5
40
93
−
32.0
15.30
500
800
50
50
100
−
−
mV
V
mA
mA
mV
mV
P-P
%
kHz
DC
IO1=0mA
With heat sink
Vi=19 to 32V
O=0 to 500mA
I
∗1
∗1
OPERATION NOTES
•There is fear of destruction of the internal circuit in case that input voltage exceeds the absolute maximum ratings (36V) by such as a surge
occurred because of rapid start-up of power voltage. Be sure not to exceed absolute maximum ratings even momentarily.
•This product has a protection element for safety. The protection element is fused for safety when the current which the protection element will
fuse. Please evaluate sufficiently at using environment about the action when the output circuit shorts.
•There are some case that the module generates heat exceeding allowable maximum surface temperature when the load current which exceeds
the maximum output current is flowed. Please make design keeping enough margins not to exceed allowable maximum surface temperature at
any time under any application or any test conditions.
•The aluminum board at back part of the product is connected to GND.
Please mind the arrangement not to contact surrounding parts.
•When using the module with bent lead pin, it might be destroyed with an extreme stress for the PCB or the aluminum board. Please use the
module without bending the lead pin.
•The aluminum board in the back might come off when an excessive stress is put in the direction of the thickness. When fixing to the heat sink
etc. to use this product, please mount to PCB after fixing to the heat sink and both the heat sink and this hold to PCB.
www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved.
3/9
2011.12 -
Rev. A
BP5277-33 / BP5277-50 / BP5277-90 / BP5277-12 / BP5277-13 / BP5277-15
BP5277-33
Data Sheet
7
6
5
4
3
2
Output Voltage Vo [V]
Ta=85°C
Line Regulation (Io=500mA)
1
Ta=25°C
Ta=−
0
5101520253035
Intput Voltage Vi [V]
100
90
80
70
60
50
40
30
20
Power Conversion Efficiency η[%]
10
0
0
100 200 300 400 500 0 100 200 300 400 500
Vi=8V
Vi=24V
Vi=32V
Output Current Io [mA]
30°C
Output Voltage vs. Temperature Fluctuation (Vi=24V)
7
6
5
4
3
2
Output Voltage Vo [V]
1
0
0 100 200 300 400 500
Ta=85°C Ta=25°C
Ta=−
30°C
Output Current Io [mA]
Output Voltage vs. Input Voltage Fluctuation (Ta=25°C)Power Conversion Efficiency Fluctuation (Ta=25°C)
7
6
5
4
3
Output Voltage Vo [V]
2
1
Vi=8V
Vi=24V
Vi=32V
0
Output Current
Io [mA]
Derating Curve (No heat sink) Derating Curve (With heat sink)
600
500
400
300
200
100
Load Current Io1 [mA]
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
Ambient Temperature Ta [°C]
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70°C
75°C
Vi=32V Vi=24V
250mA
100mA
4/9
1000
800
600
400
200
Load Current Io2 [mA]
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
75°C
Ambient Temperature Ta [°C]
2011.12 -
Vi=24V, 32V
500mA
Rev. A
BP5277-33 / BP5277-50 / BP5277-90 / BP5277-12 / BP5277-13 / BP5277-15
BP5277-50
Data Sheet
Line Regulation (Io=500mA)
7
6
5
4
3
2
Output Voltage Vo [V]
1
0
5151025 3020 35
Intput Voltage Vi [V]
100
90
80
70
60
50
40
30
20
Power Conversion Efficiency η[%]
10
0
0 100 200 300 400 500
Output Current Io [mA]
Ta=85°C Ta=25°C
Ta=−
30°C
Vin=8V
Vin=24V
Vin=32V
Output Voltage vs. Temperature Fluctuation (Vi=24V)
7
6
5
4
3
2
Output Voltage Vo [V]
1
0
0 100 200 300 400 500
Ta=85°C Ta=25°C
Ta=−
30°C
Output Current Io [mA]
Output Voltage vs. Input Voltage Fluctuation (Ta=25°C)Power Conversion Efficiency Fluctuation (Ta=25°C)
7
6
5
4
3
Output Voltage Vo [V]
2
1
Vin=8V
Vin=24V
Vin=32V
0
0 100 200 300 400 500
Output Current
Io [mA]
Derating Curve (No heat sink) Derating Curve (With heat sink)
600
500
400
300
200
100
Load Current Io1 [mA]
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
Ambient Temperature Ta [°C]
www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved.
65°C
73°C
Vi=32V Vi=24V
150mA
100mA
5/9
1000
800
600
400
200
Load Current Io2 [mA]
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
75°C
Ambient Temperature Ta [°C]
2011.12 -
Vi=24V, 32V
500mA
Rev. A
BP5277-33 / BP5277-50 / BP5277-90 / BP5277-12 / BP5277-13 / BP5277-15
BP5277-90
Data Sheet
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
0
10 15 20 25 30 35
Intput Voltage Vi [V]
Line Regulation (Io=500mA)
100
90
80
70
60
50
40
30
20
Power Conversion Efficiency η[%]
10
0
0 100 200 300 400 500 0 100 200 300 400 500
Output Current Io [mA]
Ta=85°C Ta=25°C
Ta=−
30°C
Vi=12V
Vi=24V
Vi=32V
Output Voltage vs. Temperature Fluctuation (Vi=24V)
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
0
0 100 200 300 400 500
Ta=85°C Ta=25°C
Ta=−
30°C
Output Current Io [mA]
Output Voltage vs. Input Voltage Fluctuation (Ta=25°C)Power Conversion Efficiency Fluctuation (Ta=25°C)
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
Vi=12V
Vi=24V
Vi=32V
0
Output Current
Io [mA]
Derating Curve (No heat sink) Derating Curve (With heat sink)
600
500
400
300
200
100
Load Current Io1 [mA]
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
Ambient Temperature Ta [°C]
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65°C
70°C
Vi=32V Vi=24V
150mA
80mA
6/9
1000
800
600
400
200
Load Current Io2 [mA]
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
70°C
Ambient Temperature Ta [°C]
2011.12 -
Vi=24V, 32V
400mA
Rev. A
BP5277-33 / BP5277-50 / BP5277-90 / BP5277-12 / BP5277-13 / BP5277-15
BP5277-12
Data Sheet
Line Regulation (Io=500mA)
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
Ta=85°C Ta=25°C
Ta=−
0
10 15 20 25 30 35
Intput Voltage Vi [V]
Power Conversion Efficiency Fluctuation (Ta=25°C)
100
90
80
70
60
50
40
30
20
Power Conversion Efficiency η[%]
10
0
0 100 200 300 400 500
Vi=15V
Vi=24V
Vi=32V
Output Current Io [mA]
30°C
Output Voltage vs. Temperature Fluctuation (Vi=24V)
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
0
100
0
200
Ta=85°C Ta=25°C
Ta=−
30°C
300 400 500
Output Current Io [mA]
Output Voltage vs. Input Voltage Fluctuation (Ta=25°C)
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
0
0 100 200 300 400 500
Output Current
Vi=15V
Vi=24V
Vi=32V
Io [mA]
Derating Curve (No heat sink) Derating Curve (With heat sink)
600
500
400
300
200
100
Load Current Io [mA]
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
Ambient Temperature Ta [°C]
www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved.
63°C
70°C
Vi=32V Vi=24V
150mA
80mA
7/9
1000
800
600
400
200
Load Current Io [mA]
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
70°C
Ambient Temperature Ta [°C]
2011.12 -
Vi=24V, 32V
400mA
Rev. A
BP5277-33 / BP5277-50 / BP5277-90 / BP5277-12 / BP5277-13 / BP5277-15
BP5277-13
Data Sheet
Line Regulation (Io=500mA)
18
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
0
15 20 25 30 35
Ta=85°C Ta=25°C
Ta=−
30°C
Intput Voltage Vi [V]
Power Conversion Efficiency Fluctuation (Ta=25°C)
100
90
80
70
60
50
40
30
20
Power Conversion Efficiency η[%]
10
0
0 100 200 300 400 500 0 100 200 300 400 500
Vi=16.5V Vi=24V Vi=32V
Output Current Io [mA]
Output Voltage vs. Temperature Fluctuation (Vi=24V)
18
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
0
0 100 200 300 400 500
Output Current Io [mA]
Output Voltage vs. Input Voltage Fluctuation (Ta=25°C)
18
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
Output Current
Io [mA]
Ta=85°C Ta=25°C
Ta=−
30°C
Vi=16.5V Vi=24V Vi=32V
Derating Curve (No heat sink) Derating Curve (With heat sink)
600
500
400
300
200
Load Current Io1 [mA]
100
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
Ambient Temperature Ta [
www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved.
60°C
67°C
°C]
Vi=32V Vi=24V
160mA
80mA
8/9
1000
800
600
400
200
Load Current Io2 [mA]
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
65°C
Ambient Temperature Ta [°C]
2011.12 -
Vi=24V, 32V
300mA
Rev. A
BP5277-33 / BP5277-50 / BP5277-90 / BP5277-12 / BP5277-13 / BP5277-15
BP5277-15
Data Sheet
Line Regulation (Io=500mA)
18
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
0
15 20 25 30 35
Ta=85°C Ta=25°C
Ta=−
Intput Voltage Vi [V]
Power Conversion Efficiency Fluctuation (Ta=25°C)
100
90
80
70
60
50
40
30
20
Power Conversion Efficiency η[%]
10
0
0 100 200 300 400 500
Output Current Io [mA]
30°C
Vi=19V
Vi=24V
Vi=32V
Output Voltage vs. Temperature Fluctuation (Vi=24V)
18
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
0
0 100 200 300 400 500
Ta=85°C Ta=25°C
Ta=−
30°C
Output Current Io [mA]
Output Voltage vs. Input Voltage Fluctuation (Ta=25°C)
18
16
14
12
10
8
6
Output Voltage Vo [V]
4
2
0
0 100 200 300 400 500
Output Current
Vi=19V
Vi=24V
Vi=32V
Io [mA]
Derating Curve (No heat sink) Derating Curve (With heat sink)
600
500
400
300
200
100
Load Current Io1 [mA]
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
Ambient Temperature Ta [
www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved.
60°C
67°C
°C]
Vi=32V Vi=24V
160mA
85mA
9/9
1000
800
600
400
200
Load Current Io2 [mA]
0
-40 -20 0 20 40 60 80 100
OPERATION RANGE
65°C
Ambient Temperature Ta [°C]
2011.12 -
Vi=24V, 32V
300mA
Rev. A
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd.
The content specied herein is subject to change for improvement without notice.
The content specied 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 specications, 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 specied 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 specied herein is intended only to show the typical functions of and examples of application circuits for the Products. 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 specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu­nication devices, electronic appliances and amusement devices).
The Products specied 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, re or any other damage caused in the event of the failure of any Product, such as derating, redundancy, re 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, transpor tation equipment, aerospace machinery, nuclear-reactor controller, fuel­controller 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 specied 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.
Notice
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