bd9202efs ROHM Co. Ltd., bd9202efs Datasheet - Page 5

• Manufacturer Part Number: bd9202efs
• Description: White Backlight Led Drivers For Medium To Large Lcd Panels Swreg Type
• Manufacturer: ROHM Co. Ltd.

●The reference data (Unless otherwise specified VCC=24V and Ta=25 ℃)
© 2009 ROHM Co., Ltd. All rights reserved.
BD9202EFS
Fig.1 VREG Temperature characteristic
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5.0
4.5
4.0
3.5
3.0
1.0
0.9
0.8
0.7
0.6
0.5
100
5.5
5.3
5.1
4.9
4.7
4.5
80
60
40
20
0
-40
-40
-40
0.0
Fig.4 ILED depending on VLED
Fig.10
-15
0.5
VCC=24V, Io=0mA
-15
-15
VCC=24V
Fig.7
characteristic
Short detection temperature
characteristic
1.0
VCC=24V, RSET=68kΩ
10
10
10
VLED [V]
Ta [℃]
Ta [℃]
Ta [℃]
VLED
1.5
35
35
35
2.0
Temperature
60
60
60
2.5
85
85
3.0
85
100
110
100
1.0
0.9
0.8
0.7
0.6
0.5
80
60
40
20
90
80
70
60
Fig.2 VREF Temperature characteristic
0
90
85
80
75
70
-40
0.0
Fig.5 ILED Temperature characteristic
0
-40
Fig.11 Open
Fig.8 ICC-VCC characteristic
200
0.5
VCC=24V, RSET=130kΩ
-15
-15
VCC=24V, Io=0mA
400
1.0
characteristic
IDCDC [mA]
10
VLED [V]
10
5/19
Ta [℃]
600
Ta [℃]
detection temperature
1.5
35
35
800
2.0
1000
60
60
2.5
1200
3.0
85
85
1.0
0.9
0.8
0.7
0.6
0.5
700
680
660
640
620
600
580
560
540
520
500
110
100
90
80
70
60
Fig.3 OSC1,OSC2 Temperature
-40
-40
10
0
8
6
4
2
0
0
Fig.6 VSET Constant electric current
200
-15
-15
Fig.9 EN Threshold voltage
VCC=24V, recommendation for
ex
VCC=24V, RSET=68kΩ
ternal part use
re characteristic
VCC=24V, RT(BRT)=51kΩ
1
Fig.12 Efficiency
400
10
10
IDCDC [mA]
Ta [℃]
Ta [℃]
characteristic
2
600
VEN [V]
Technical Note
2009.04 - Rev.A
35
35
800
3
60
60
1000
4
85
1200
85
5