ADM8845(RevD) データシートの表示（PDF） - Analog Devices
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ADM8845 Datasheet PDF : 18 Pages
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ADM8845
VCC 1
VOUT 2
CH1 20.0mV BW CH2 20.0mV BW M 400ns CH1 220mV
Figure 15. 1× Mode Operating Waveforms
90
VF = 3.8V
85
VF = 4.0V
80
VF = 4.3V
75
70
65
60
55
VF = 3.6V
50
VF = 3.2V
45
40
2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
VCC (V)
Figure 16. Power Efficiency vs. VCC over Li-Ion Range,
Six LEDS at 15 mA/LED
90
85
VF = 3.8V
80
VF = 4.0V
75
VF = 4.3V
70
65
60
55
VF = 3.6V
50
VF = 3.2V
45
40
2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
VCC (V)
Figure 17. Power Efficiency vs. VCC over Li-Ion Range,
Four LEDS at 15 mA/LED
Data Sheet
90
85
VF = 3.8V
80
VF = 4.0V
75
VF = 4.3V
70
65
60
55
VF = 3.6V
50
VF = 3.2V
45
40
2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
VCC (V)
Figure 18. Power Efficiency vs. VCC over Li-Ion Range,
Six LEDS at 20 mA/LED
90
85
VF = 3.8V
80
VF = 4.0V
75
VF = 4.3V
70
65
60
55
VF = 3.6V
50
VF = 3.2V
45
40
2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
VCC (V)
Figure 19. Power Efficiency vs. VCC over Li-Ion Range
Four LEDS at 20 mA/LED
CTRL1/2
1
: 44.0ms C2 FALL
@: –44.4ms 200s
LOW SIGNAL
AMPLITUDE
VOUT
2
CH1 2.00V CH2 2.00V
M10.0ms
Figure 20. TPC Delay
CH2 4.36V
Rev. D | Page 8 of 18
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