BP5029
DC/DC converter
Absolute Maximum Ratings
Power supply voltage
Operating temperature
Storage temperature
Parameter Symbol Limits Unit
VIN
Topr
Tstg
20
−10 to +80
−25 to +105
V
°C
°C
Unit
∗2
∗1
Conditions
V
V
mA
V
V
Vpp
%
DC
Vi=12V, Io=100mA
Vi=12V
Vi=8 to 15V, Io=300mA
Vi=12V, Io=0 to 300mA
Vi=12V, Io=300mA
Vi=12V, Io=300mA
∗1 Maximum output current varies depending on ambient temperature : please refer to derating curve.
∗2 Spike noise is not included in output ripple voltage.
Electrical Characteristics
Input voltage
Output voltage
Output current
Line regulation
Load regulation
Output ripple voltage
Power conversion efficiency
Parameter Symbol Typ. Max.Min.
Vi
Vo
Io
VL
VR
Vp
η
−
5.0
−
0.03
0.07
0.06
82
16.0
5.3
300
0.10
0.15
0.15
−
8.0
4.7
0
−
−
−
77
Load Regulation
5.20
5.10
5.00
4.90
4.80
4.70
0 0.1 0.30.2
(Ta=25°C, Vi=12V)
Output Current Io(A)
Output Voltage Vo(V)
Load Regulation
Conversion Efficiency
120
100
80
60
40
20
0
0 0.1 0.30.2
(Ta=25°C, Vi=12.0V)
Output Current Io(A)
Conversion Efficiency η (%)
Conversion Efficiency
Dimensions (mm)
Application circuit
Outside part
F1: FUSE
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.
C1: Input capacitor
C2: Output 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.
C3: Noise reduction capacitor
Pin No.
1
2
3
4
5
6
Function
Input terminal Vi
Input terminal Vi
Skip
GND
GND
Output terminal Vo
BP5029
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.
5V/300mA output
Derating curve
Derating Curve
Operation Range
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
010-30 -20 -10 20 4030 80706050 90
Ambient Temperature Ta(°C)
Output Current Io(A)
BP5029
12 456
C1
F1
C2 C3 Vo
VIN +
65412
18.3Max. 11.5Max.
6.75Max.
4.75Max.
19.3Max.
4.0±1.0
2.54×5=12.7
2.54±0.2
1.3±0.2
0.5±0.5 0.25±0.05
3.25Max.
Marked side
VIN=8.0V
VIN=12.0V
VIN=16.0V
Rev.A
Appendix
Appendix1-Rev1.1
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.
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.
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.
