BD6067GU_11 ROHM [Rohm], BD6067GU_11 Datasheet - Page 3

• Manufacturer Part Number: BD6067GU_11
• Description: White Backlight LED Drivers for Small to Medium LCD Panels (Switching Regulator Type)
• Manufacturer: ROHM [Rohm]

© 2011 ROHM Co., Ltd. All rights reserved.
BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN
►BD6067GU
●Electrical characteristic curves (Reference data)
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3500
3000
2500
2000
1500
1000
100
500
5.0
4.0
3.0
2.0
1.0
0.0
25
20
15
10
Brightness Control Characteristic
90
80
70
60
50
Fig.1 Operating current vs. Power
5
0
Fig.4 Efficiency vs. LED Current
0
0.0
2.5
2.5
5
Vin=3.1V
Fig.7 Output Voltage vs.
Power Supply Voltage
3
Ta=-30 ℃
3
Vin=3.6V
Ta=85 ℃
0.5
15
Supply Voltage
Vin=2.7V
(6LED) (Ta=25℃)
Fig.10 DAC
Vin=3.1V
3.5
3.5
VDAC [V]
ILED [mA]
(8LED)
Vin [V]
Vin [V]
1.0
Ta=25 ℃
25
4
4
Ta=25 ℃
Ta=85 ℃
Vin=5.5V
Ta=-30 ℃
4.5
4.5
Vin=3.6V
1.5
35
5
5
2.0
5.5
5.5
45
100
230
220
210
200
190
180
170
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Fig.2 Quiescent current vs. Power
Fig.8 VFB Pin Control Voltage vs.
90
80
70
60
50
Fig.5 Efficiency vs. LED Current
2.5
2.5
5
Power Supply Voltage
Ta=-30 ℃
3
3
(8LED) (ILED=20mA)
15
Supply Voltage
Ta=-30 ℃
(7LED) (Ta=25℃)
Vin=3.1V
3.5
3.5
3/29
ILED [mA]
Vin=5.5V
Ta=25 ℃
Vin [V]
Vin [V]
25
4
4
Ta=25 ℃
Ta=85 ℃
4.5
4.5
Ta=85 ℃
Vin=3.6V
35
5
5
5.5
5.5
45
PWM Brightness Control Characteristic
1.4
1.3
1.2
1.1
0.9
0.8
0.7
0.6
100
25
20
15
10
90
80
70
60
50
1
5
0
Fig.6 Efficiency vs. LED Current
2.5
Fig.3 Oscillation Frequency vs.
0
5
Power Supply Voltage
3
20
Ta=-30 ℃
Vin=3.1V
(f=100Hz, Ta=25℃)
15
Fig.9 EN Pin
(8LED) (Ta=25℃)
3.5
EN Duty [%]
40
Vin=5.5V
ILED [mA]
Vin [V]
2011.01 - Rev.C
Technical Note
Vin=3.6V
Ta=25 ℃
4
25
Vin=2.7V
60
Vin=3.1V
Vin=3.6V
Ta=85 ℃
4.5
35
80
5
100
5.5
45