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产品型号BP5275-18的Datasheet PDF文件预览

Data Sheet  
Non-Isolated Step-Down 3-Terminal DC/DC Converters  
BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50  
Dimensions (Unit : mm)  
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.  
5.2  
13.8 MAX  
2xC0.5  
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).  
0.75  
1.3  
2.54 0.2  
0.5  
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).  
2.54 0.2  
Pin No.1  
2
3
Note : Dimensions without tolerance is typical.  
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  
BP527518  
4.5 to 14  
1.8  
BP527525  
4.5 to 14  
2.5  
BP527533  
5.0 to 14  
3.3  
BP527550  
6.0 to 14  
5.0  
Unit  
V
Input voltage  
Output voltage  
V
Maximum output current  
(no heat sink / include heat sink)  
500 / 800  
73  
500 / 800  
78  
500 / 800  
83  
500 / 800  
88  
mA  
%
Power conversion  
efficiency (Vin=12V)  
Absolute maximum ratings (Ta=25°C)  
Limits  
Parameter  
Input voltage  
Symbol  
Unit  
BP527518  
BP527525  
BP527533  
BP527550  
15  
15  
15  
15  
VIn  
V
30 to 85  
40 to 105  
100  
30 to 85  
40 to 105  
100  
30 to 85  
40 to 105  
100  
30 to 85  
40 to 105  
100  
Operating temperature range  
Storage temperature range  
°C  
Topr  
Tstg  
°C  
°C  
°C  
°C  
Allowable maximum surface temperature  
Maximum output current 1  
Tcmax  
IO1max  
500  
500  
500  
500  
Maximum output current 2 (with Heat Sink)  
800  
800  
800  
800  
IO2max  
www.rohm.com  
© 2011 ROHM Co., Ltd. All rights reserved.  
2011.08 - Rev. A  
1/7  
BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50  
Data Sheet  
Block diagram  
Measurement circuit  
1
2 3  
Control  
Circuit  
Io  
Vin  
A
A
Vout  
GND  
V
V
V
Vin  
GND  
Electrical characteristics  
BP527518 (Unless otherwise noted : Ta=25°C, Vin=12V, lo1=500mA)  
Parameter  
Symbol  
Min.  
Typ.  
Max.  
Unit  
V
Conditions  
DC  
Vin  
4
12  
14  
Input voltage  
VO  
1.75  
0
1.80  
1.85  
500  
800  
50  
V
IO1=0mA  
Output voltage  
1  
1  
IO1  
mA  
mA  
mV  
mV  
Output current 1  
Output current 2  
Line regulation  
IO2  
With heat sink  
Vin=4 to 14V  
IO=0 to 500mA  
0
5
10  
5
Vr  
Vl  
50  
Load regulation  
mVP-P  
msec  
%
80  
Output ripple voltage  
Minimum start-up time  
Conversion efficiency  
Vp  
Ts  
Vin=0V 3V,Ro=3.6Ω  
4
7
65  
73  
Operation frequency  
f
1.5  
MHz  
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  
Symbol  
Vin  
Min.  
4
Typ.  
12  
Max.  
14  
Unit  
V
Conditions  
DC  
Output voltage  
VO  
2.45  
0
2.50  
2.55  
500  
800  
50  
V
IO1=0mA  
Output current 1  
Output current 2  
Line regulation  
1  
1  
IO1  
mA  
mA  
mV  
mV  
mVP-P  
msec  
%
IO2  
0
With heat sink  
Vin=4 to 14V  
5
10  
5
Vr  
Vl  
Load regulation  
50  
IO1=0 to 500mA  
Output ripple voltage  
Minimum start-up time  
Conversion efficiency  
50  
Vp  
Ts  
Vin=3V 4V,Ro=5Ω  
4
7
73  
78  
Operation frequency  
f
1.5  
MHz  
1 Derating required according to the input voltage and ambient temperature.  
www.rohm.com  
© 2011 ROHM Co., Ltd. All rights reserved.  
2011.08 - Rev. A  
2/7  
BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50  
Data Sheet  
Electrical characteristics  
BP527533 (Unless otherwise noted :Ta=25°C, Vin=12V, lo1=500mA)  
Parameter  
Symbol  
Min.  
4.5  
3.23  
0
Typ.  
Max.  
Unit  
V
Conditions  
Input voltage  
DC  
Vin  
12  
14  
Output voltage  
IO1=0mA  
VO  
3.30  
3.37  
500  
800  
50  
V
1  
1  
Output current 1  
Output current 2  
Line regulation  
IO1  
mA  
mA  
mV  
mV  
mVP-P  
msec  
%
IO2  
0
With heat sink  
Vin=4.5 to 14V  
IO=0 to 500mA  
5
10  
5
Vr  
Vl  
Load regulation  
50  
Output ripple voltage  
Minimum start-up time  
Conversion efficiency  
50  
Vp  
Ts  
Vin=3V 4.5V,Ro=6.6Ω  
4
7
78  
83  
Operation frequency  
f
1.5  
MHz  
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  
Symbol  
Vin  
Min.  
6
Typ.  
12  
Max.  
14  
Unit  
V
Conditions  
DC  
Output voltage  
VO  
4.9  
0
5.0  
5.1  
500  
800  
50  
V
IO1=0mA  
Output current 1  
Output current 2  
Line regulation  
1  
1  
IO1  
mA  
mA  
mV  
mV  
mVP-P  
msec  
%
IO2  
0
With heat sink  
Vin=6 to 14V  
5
10  
5
Vr  
Vl  
Load regulation  
50  
IO1=0 to 500mA  
Output ripple voltage  
Minimum start-up time  
Conversion efficiency  
50  
Vp  
Ts  
Vin=3V 6V,Ro=10Ω  
4
83  
7
88  
1.5  
Operation frequency  
f
MHz  
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.  
2011.08 - Rev. A  
3/7  
BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50  
Data Sheet  
BP5275-18  
Line Regulation  
Output Voltage vs. Temperature FluctuationVin=12V)  
1.85  
1.84  
1.83  
1.82  
1.81  
1.80  
1.79  
1.78  
1.85  
1.84  
1.83  
1.82  
1.81  
1.80  
1.79  
1.78  
Ta= 80°C  
Ta= 80°C  
1.77  
1.77  
Ta= 25°C  
Ta= 25°C  
1.76  
1.76  
Ta=35°C  
Ta=35°C  
1.75  
1.75  
0
2
4
6
8
10 12 14 16  
0
100  
200  
300  
400  
500  
Intput Voltage Vin [V]  
Output Current Io [mA]  
Power Conversion Efficiency FluctuationTa=25°C)  
100  
Output Voltage vs. Input Voltage FluctuationTa=25°C)  
1.85  
1.84  
1.83  
1.82  
1.81  
1.80  
1.79  
1.78  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
Vin= 6V  
Vin= 6V  
Vin=12V  
Vin=14V  
1.77  
Vin=12V  
1.76  
Vin=14V  
1.75  
0
100  
200  
300  
400  
500  
0
100  
200  
300  
400  
500  
Output Current Io [mA]  
Output Current Io [mA]  
Derating Curve (With heat sink)  
Derating Curve (No heat sink)  
Vin=10V以下  
Vin=12V  
Vin=14V  
Vin=12V以下  
Vin=14V  
1000  
600  
500  
400  
300  
200  
100  
0
76℃  
65  
75℃  
800  
600  
400  
200  
0
550mA  
333mA  
250mA  
OPERATION RANGE  
OPERATION RANGE  
-40  
-20  
0
20  
40  
60  
80  
100  
-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.  
2011.08 - Rev. A  
4/7  
BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50  
Data Sheet  
BP5275-25  
Output Voltage vs. Temperature FluctuationVin=12V)  
Line Regulation  
2.55  
2.55  
2.54  
2.53  
2.52  
2.51  
2.50  
2.49  
2.48  
2.54  
2.53  
2.52  
2.51  
2.50  
2.49  
2.48  
Ta= 80°C  
Ta= 80°C  
2.47  
2.47  
Ta= 25°C  
Ta= 25°C  
2.46  
2.46  
Ta=35°C  
Ta=35°C  
2.45  
2.45  
0
2
4
6
8
10  
12  
14  
16  
0
100  
200  
300  
400  
500  
Intput Voltage Vin [V]  
Output Current Io [mA]  
Output Voltage vs. Input Voltage FluctuationTa=25°C)  
Power Conversion Efficiency FluctuationTa=25°C)  
100  
90  
80  
70  
60  
50  
40  
30  
2.55  
2.54  
2.53  
2.52  
2.51  
2.50  
2.49  
2.48  
Vin= 6V  
Vin= 6V  
2.47  
20  
Vin=12V  
Vin=12V  
2.46  
10  
Vin=14V  
Vin=14V  
2.45  
0
0
100  
200  
300  
400  
500  
0
100  
200  
300  
400  
500  
Output Current Io [mA]  
Output Current Io [mA]  
Derating Curve (With heat sink)  
Derating Curve (No heat sink)  
Vin=10V以下  
Vin=12V  
Vin=14V  
Vin=12V以下  
Vin=14V  
1000  
800  
600  
400  
200  
0
600  
500  
400  
300  
200  
100  
0
74℃  
65  
75℃  
528mA  
333mA  
250mA  
OPERATION RANGE  
OPERATION RANGE  
-40  
-20  
0
20  
40  
60  
80  
100  
-40  
-20  
0
20  
40  
60  
80  
100  
Ambient Temperature Ta []  
Ambient Temperature Ta []  
www.rohm.com  
© 2011 ROHM Co., Ltd. All rights reserved.  
2011.08 - Rev. A  
5/7  
BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50  
Data Sheet  
BP5275-33  
Line Regulation  
Output Voltage vs. Temperature FluctuationVin=12V)  
3.40  
3.38  
3.36  
3.34  
3.32  
3.30  
3.28  
3.26  
3.40  
3.38  
3.36  
3.34  
3.32  
3.30  
3.28  
3.26  
Ta= 80°C  
Ta= 80°C  
3.24  
3.24  
Ta= 25°C  
Ta= 25°C  
3.22  
3.22  
Ta=35°C  
Ta=35°C  
3.20  
3.20  
0
2
4
6
8
10 12 14 16  
0
100  
200  
300  
400  
500  
Intput Voltage Vin [V]  
Output Current Io [mA]  
Output Voltage vs. Input Voltage FluctuationTa=25°C)  
Power Conversion Efficiency FluctuationTa=25°C)  
100  
3.40  
3.38  
3.36  
3.34  
3.32  
3.30  
3.28  
3.26  
90  
80  
70  
60  
50  
40  
30  
Vin= 6V  
Vin= 6V  
3.24  
20  
Vin=12V  
Vin=12V  
3.22  
10  
Vin=14V  
Vin=14V  
3.20  
0
0
100  
200  
300  
400  
500  
0
100  
200  
300  
400  
500  
Output Current Io [mA]  
Output Current Io [mA]  
Derating Curve (With heat sink)  
Derating Curve (No heat sink)  
Vin=10V以下  
Vin=12V  
Vin=14V  
Vin=12V以下  
Vin=14V  
1000  
800  
600  
400  
200  
0
600  
500  
400  
300  
200  
100  
0
73  
65  
75℃  
333mA  
250mA  
505mA  
OPERATION RANGE  
OPERATION RANGE  
-40  
-20  
0
20  
40  
60  
80  
100  
-40  
-20  
0
20  
40  
60  
80  
100  
Ambient Temperature Ta []  
Ambient Temperature Ta []  
www.rohm.com  
© 2011 ROHM Co., Ltd. All rights reserved.  
2011.08 - Rev. A  
6/7  
BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50  
Data Sheet  
BP5275-50  
Line Regulation  
5.10  
Output Voltage vs. Temperature FluctuationVin=12V)  
5.10  
5.08  
5.06  
5.04  
5.02  
5.00  
4.98  
4.96  
5.08  
5.06  
5.04  
5.02  
5.00  
4.98  
4.96  
Ta= 80°C  
Ta= 80°C  
4.94  
4.94  
Ta= 25°C  
Ta= 25°C  
4.92  
4.92  
Ta=35°C  
Ta=35°C  
4.90  
4.90  
0
2
4
6
8
10 12 14 16  
0
100  
200  
300  
400  
500  
Intput Voltage Vin [V]  
Output Current Io [mA]  
Power Conversion Efficiency FluctuationTa=25°C)  
100  
Output Voltage vs. Input Voltage FluctuationTa=25°C)  
5.10  
5.08  
5.06  
5.04  
5.02  
5.00  
4.98  
4.96  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
Vin= 6V  
Vin= 6V  
Vin=12V  
Vin=14V  
4.94  
Vin=12V  
4.92  
Vin=14V  
4.90  
0
100  
200  
300  
400  
500  
0
100  
200  
300  
400  
500  
Output Current Io [mA]  
Output Current Io [mA]  
Derating Curve (With heat sink)  
Derating Curve (No heat sink)  
Vin=10V以下  
Vin=12V  
Vin=14V  
Vin=12V以下  
Vin=14V  
1000  
800  
600  
400  
200  
0
600  
500  
400  
300  
200  
100  
0
72℃  
65  
75℃  
333mA  
250mA  
480mA  
OPERATION RANGE  
OPERATION RANGE  
-40  
-20  
0
20  
40  
60  
80  
100  
-40  
-20  
0
20  
40  
60  
80  
100  
Ambient Temperature Ta []  
Ambient Temperature Ta []  
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