BP5250 Просмотр технического описания (PDF) - ROHM Semiconductor
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BP5250 Datasheet PDF : 12 Pages
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BP5250 / BP5250-24
Electrical characteristics (Unless otherwise noted, Vi=12V : BP5250, Vi=24V : BP5250-24, Ta=25°C)
Parameter
Symbol Min. Typ. Max. Unit
Conditions
Test Circuit
Output ADJ Pin voltage
Over current detection
off set voltage1
Over current detection
off set voltage2
CTL pin ON voltage
CTL pin OFF voltage
CTL sink current
Stand by current
VADJ
VLT1
VLT2
VCTLH
VCTLL
ICTL
ISTB
1.225
60
20
2
−
40
−
1.25
68
28
−
−
50
0
1.275
76
36
−
1
70
10
V VSW L→H
mV VSW L→H VADJ=1.25V
mV VSW L→H VADJ=0V
V VSW H→L
V VSW L→H
µA VCTL=5V
µA VCTL=0V
Fig.1
Fig.2
Fig.2
Fig.3
Fig.3
Fig.3
Fig.3
Measurement circuit
BP5250 / BP5250-24
VCTL Vi
12
SW GND IS
345
Vo VADJ
67
Vi=12V : BP5250
Vi=24V : BP5250-24
L→H
VSW
5V Vi
VADJ
BP5250 / BP5250-24
VCTL Vi SW GND
1234
L→H
VSW
5V Vi
IS Vo
56
VLT
VADJ
7
Vi=12V : BP5250
Vi=24V : BP5250-24
VADJ
Fig.1 Output ADJ terminal voltage measurement circuit
Over current detection off set voltage 1 : VADJ=1.25V
Over current detection off set voltage 2 : VADJ=0V
Fig.2 Over current detection off set voltage measurement circuit
BP5250 / BP5250-24
VCTL Vi SW GND IS
12345
AA
ICTL
VCTL
ISTB
VSW
Vi
Vo VADJ
67
Vi=12V : BP5250
Vi=24V : BP5250-24
VADJ
1.25V
CTL sink current : VCTL=5V
Stad by current : VCTL=0V
Fig.3 Control terminal voltage sink current ·
Stand by sink current measurement circuit
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