BP5122(2010) Ver la hoja de datos (PDF) - ROHM Semiconductor
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BP5122 Datasheet PDF : 1 Pages
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Data Sheet
Negative DC/DC Converter (Non-isolated)
BP5122
Absolute Maximum Ratings
Parameter
Input voltage
Output Current
Operating
temperature range
Symbol
Limits
Unit
Vi
24
V
Io
0.1
A
Topr
°C
Storage temperature
Tstg
range
°C
Electrical Characteristics
(Vi=15V, lo=0.05A, SW=1, Ta=25°C unless otherwise noted)
Parameter
Symbol Min. Typ. Max. Unit
Input voltage
Vi
8
20 V
output voltage
Vo
Rated output current
lo
0.01
V
0.1 A
Line regulation
2
80 mV
Conditions
See Derating Curve.
Vi=8V to 20VDC
Load regulation
Output ripple voltage
Power conversion
efficiency
Switching
Frequency
fSW
5
80 mV lo=0.01A to 0.1A
10 80 mVpp
60 70
%
250
kHz
Sample Application Circuit
FUSE
Use a fuse for safety
Please verify operation and characteristics in the customer's circuit
before actual usage. Ensure that the load current does not exceed
the maximum rating.
Pin No.
1
2
3
4
5
6
7
8
9
Terminal name
Output Terminal
GND
GND
GND
GND
GND
GND
Skip
Input Terminal
Dimensions (Unit : mm)
26.7MAX.
12.7MAX.
Marked side
3.25MAX.
1 2 3 45 67
9
P=2.54±0.2
0.5±0.1
1.3±0.2
2.54 8=20.32
0.25±0.05
4.45MAX.
8.25MAX.
Derating Curve
120
100
80
60
Operation Range
40
20
0
0 10 20 30 40 50 60 70 80
Ambient Temperature Ta(°C)
Conversion Efficiency
100
80
60
40
20
0
0
(Ta=25°C,Vi=15V)
20 40 60 80 100
Output Current Io(mA)
Load Regulation
0
20
40
60
80
100
Output Current Io(mA)
External Component Settings
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© 2010 ROHM Co., Ltd. All rights reserved.
1/1
2010.03 - Rev. B
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