BP5222 데이터 시트보기 (PDF) - ROHM Semiconductor
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BP5222 Datasheet PDF : 8 Pages
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BP5220 / BP5221 / BP5222 /
BP5220X / BP5221X / BP5222X
Operation notes
(1) The output current should be reduced according to an increase in the input voltage or ambient
temperature. Use the modules within the derating curve range.
(2) Pins 5 and 7 are no connected.
(3) No circuit is installed in the modules to protect against over output currents. Take physical safety measures
such as fusing if short-circuit loading is probable.
(4) A large rush current may flow in the module when the input voltage is applied or the output ON / OFF is
controlled with pin 4 without a capacitor such as C1 in application 4. Operating within the safe operation
ranges shown in Figs.12, 15, and 18.
The safe operation range is determined by the safe operation range of the internal switching transistor.
The amount of rush current depends on the output impedance of the input power supply and capacitors
connected to the module outputs. The pulse load on the internal switching transistor at the start of operation
can be reduced by using the protection circuit of application 1 or the slow start circuit of application 4.
Electrical characteristic curves
BP5220, BP5220X
1200
100
1000
VIN=8~15V
80
VIN=34V
VIN=25V
800
VIN=38V
VIN=30V
60
600
40
400
200
20
VIN =8V
VIN =23V
VIN =38V
0
25
50 70
100 120
AMBIENT TEMPERATURE : Ta(°C)
Fig.10 Derating curve
0
200 400 600 800 1000
OUTPUT CURRENT : Io (A)
Fig.11 Efficiency
20
Pw=0.2ms
10
5
3
2
Pw=1ms
1
0.5
0.3 Tc=25°C
SINGLE PULSE
0.2
0.1
1 2 3 5 10 20 30 50
VOLTAGE BETWEEN PIN2 AND PIN9 (V)
Fig.12 Safety operation range
BP5221, BP5221X
0.6
100
VIN =8V
0.5
VIN=8~20V
80
VIN =23V
0.4
VIN=30~38V
60
VIN =38V
0.3
40
0.2
0.1
20
0
25
50 70
100 120
AMBIENT TEMPERATURE : Ta (°C)
Fig.13 Derating curve
0
0.1
0.2
0.3
0.4
0.5
OUTPUT CURRENT : Io (A)
Fig.14 Efficiency
5
Pw=1ms
3
2
Pw=10ms
1
0.5
0.3 Tc=25°C
SINGLE PULSE
0.2
0.1
1 2 3 5 10 20 30 50
VOLTAGE BETWEEN PIN2 AND PIN9 (V)
Fig.15 Safety operation range
74
6/8
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