Rohm BP5225 Step-down dc/dc converter (non-isolated) Datasheet

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