參數(shù)資料
型號(hào): ADM8845ACPZ
廠商: ANALOG DEVICES INC
元件分類: 顯示驅(qū)動(dòng)器
英文描述: Charge Pump Driver for LCD White LED Backlights
中文描述: LED DISPLAY DRIVER, QCC16
封裝: 3 X 3 MM, 0.90 MM HEIGHT, LEAD FREE, LFCSP-16
文件頁數(shù): 8/18頁
文件大小: 341K
代理商: ADM8845ACPZ
ADM8845
Preliminary Technical Data
Rev. PrJ 06/04 | Page 8 of 18
Figure 16. 1x Mode Operating Waveforms
Power Efficiency over Li-ion Range
40
45
50
55
60
65
70
75
80
85
90
2.8
2.9
3
3.1
3.2
3.3
3.4
3.5
Vcc
3.6
3.7
3.8
3.9
4
4.1
4.2
P
Vf = 4.0V
Vf = 3.8V
Vf = 3.6V
Vf = 3.2V
Vf = 4.3V
Figure 18. Power Efficiency vs. Supply Voltage over Li-ion Range
(6 LEDS @ 15mA/LED)
Power Efficiency over Li-ion Range
40
45
50
55
60
65
70
75
80
85
90
2.8
2.9
3
3.1
3.2
3.3
3.4
3.5
Vcc
3.6
3.7
3.8
3.9
4
4.1
4.2
P
Vf = 4.3V
Vf = 4.0V
Vf = 3.8V
Vf = 3.6V
Vf = 3.2V
Figure 20. Power Efficiency vs. Supply Voltage over Li-ion Range
(4 LEDS @ 15mA/LED)
Power Efficiency over Li-ion Range
40
45
50
55
60
65
70
75
80
85
90
2.8
2.9
3
3.1
3.2
3.3
3.4
3.5
Vcc
3.6
3.7
3.8
3.9
4
4.1
4.2
P
Vf = 4.3V
Vf = 4.0V
Vf = 3.8V
Vf = 3.6V
Vf = 3.2V
Figure 17. Power Efficiency vs. Supply Voltage over Li-ion Range
(6 LEDS @ 20mA/LED)
Power Efficiency over Li-ion Range
40
45
50
55
60
65
70
75
80
85
90
2.8
2.9
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4.2
Vcc
P
Vf = 4.3V
Vf = 4.0V
Vf = 3.8V
Vf = 3.6V
Vf = 3.2V
Figure 19. Power Efficiency vs. Supply Voltage over Li-ion Range
(4 LEDS @ 20mA/LED)
Figure 21. TPC Delay
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