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