DC/DC converter
5V/300mA output
BP5029
Absolute Maximum Ratings
Parameter
Power supply voltage
Operating temperature
Storage temperature
Symbol
V
IN
Topr
Tstg
Dimensions (mm)
Limits
20
−10
to +80
−25
to +105
Unit
V
°C
°C
18.3Max.
11.5Max.
4.0±1.0
1
2
4
5
6
0.5±0.5
1.3±0.2
0.25±0.05
4.75Max.
6.75Max.
3.25Max.
2.54±0.2
2.54
×
5=12.7
Electrical Characteristics
Symbol
Parameter
Input voltage
Vi
Output voltage
Vo
Output current
Io
Line regulation
VL
Load regulation
VR
Output ripple voltage
Vp
η
Power conversion efficiency
Min.
8.0
4.7
0
−
−
−
77
Typ.
−
5.0
−
0.03
0.07
0.06
82
Max.
16.0
5.3
300
0.10
0.15
0.15
−
Unit
V
V
mA
V
V
Vpp
%
Conditions
DC
Vi=12V, Io=100mA
Vi=12V
∗1
Vi=8 to 15V, Io=300mA
Vi=12V, Io=0 to 300mA
Vi=12V, Io=300mA
∗2
Vi=12V, Io=300mA
Derating curve
Derating Curve
0.4
0.35
0.3
0.25
0.2
Operation Range
0.15
0.1
0.05
0
-30 -20 -10 0 10 20 30 40 50 60 70 80 90
Ambient Temperature Ta(
°C
)
Output Current Io(A)
∗1
Maximum output current varies depending on ambient temperature : please refer to derating curve.
∗2
Spike noise is not included in output ripple voltage.
Conversion Efficiency
Conversion Efficiency
η
(%)
120
100
80
60
40
20
0
0
0.1
0.2
Output Current Io(A)
0.3
Conversion Efficiency
(Ta=25
°C
, Vi=12.0V)
Application circuit
BP5029
BP5029
1
2
4
5
6
Pin No.
1
2
3
4
5
6
Function
Input terminal Vi
Input terminal Vi
Skip
GND
GND
Output terminal Vo
Load Regulation
5.20
Output Voltage Vo(V)
5.10
5.00
4.90
4.80
4.70
0
0.1
0.2
Output Current Io(A)
0.3
V
IN
=16.0V
V
IN
=12.0V
V
IN
=8.0V
F1
V
IN
Load Regulation
(Ta=25
°C
, Vi=12V)
+
C1
C2
C3
Vo
Use a fuse for safety
Be sure to evaluate it under the cindition that it is mounted by your product.
Especially, Confirm whether output current never exceeds a maximum standard
with current probe.
Outside part
F1: FUSE
C1: Input capacitor
Recommend the use of fast-acting type fuse 0.5A.
Rated voltage : More than 50V
Capacity : 33 to 220µF, low impedance type
Rated ripple current : More than 0.1Arms
Rated voltage : More than 25V
Capacity : 100 to 470µF, low impedance type
ESR : Less than 0.39Ω
Rated ripple current : More than 0.37Arms
Evaluate it with the actual opportunity because
it influences an output ripple voltage.
C2: Output capacitor
C3: Noise reduction capacitor Rated voltage : More than 25V
Capacity : 0.1 to 0.22µF
Film capacitor or ceramic capacitor
The constant value should be evaluated in the product.
Marked side
19.3Max.
Rev.A
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1
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