5V/150mA Output
Step-down DC/DC Converter (Non-isolated)
BP5225
Absolute Maximum Ratings
Input voltage
Operating temperature range
Storage temperature range
Maximum surface temperature
Maximum output current
Parameter Symbol Limits Unit
Vi
Topr
Tstg
Tsmax
Iopeak
V
°C
°C
°C
mA
Unit Conditions
V
V
mA
V
V
Vpp
%
DC
Vi=12V, Io=150mA
Vi=12V
Vi=10.0 to 26.4V, Io=150mA
Vi=12V, Io=0 to 150mA
Vi=12V, Io=150mA
Vi=12V, Io=150mA
Electrical Characteristics
Input voltage range
Output voltage
Output current
Line regulation
Load regulation
Output ripple voltage
Power conversion efficiency
Parameter Symbol Typ. Max.Min.
Efficiency (%)
Conversion Efficiency
Dimensions (Unit : mm)
Application Circuit
External Component Specifications
FUSE: FUSE
Use a fast-acting fuse from 0.5 to 1A.
C1: Input Capacitor
C2: Output Capacitor
C3: Noise Removal Capacitor
Pin No.
1
2
3
4
5
Function
Input terminal Vi
Not used
GND
GND
Output terminal Vo
Verify proper operation under actual conditions before use. In particular, confirm that
the load current does not exceed the maximum rating.
Derating Curve
Operation Range
160
140
120
100
80
60
40
20
0
010-30 -20 -10 20 4030 80706050 90
Ambient Temperature Ta(
°C)
Output Current Io(mA)
Load Regulation
BP5225
Use a fuse for safety
1
345
C1
C2
Io
C3
Vo
Vi
L
IN
+
200
250
300
150
100
50
0
0 20 40 100 120 16014060 80
Output Current (mA)
Frequency (kHz)
Oscillation Frequency
4.7
4.9
4.8
5
5.2
5.1
5.3
010 405060708020 30
Ambient temperature (
°C)
Output voltage (V)
Temperature Characteristics
5413
16.8Max.4.0±1.0
2.54x 4=10.16
P=2.54±0.2
1.3±0.2
0.5±0.1
3.25Max.
9.7Max.
6.05Max.
3.65Max.
0.25±0.05
17.0Max.
Mark Side
Vi=12V
Vi=24V
4
5
6
3
2
1
0
0 50 150 200 250100
Output Current (mA)
Output Voltage (V)
Vi=12V
Vi=24V
Vi=12V, Io=0mA
Vi=12V, Io=150mA
Vi=24V, Io=150mA
Vi=24V, Io=0mA
10%
20%
30%
40%
50%
60%
70%
80%
90%
0%
0 20 40 100 120 16014060 80
Output Current (mA)
Vi=12V
Vi=24V
1/1
2010.03 -
Rev. B
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© 2010 ROHM Co., Ltd. All rights reserved.
Data Sheet
