ADM8843 datasheet(8/16 Pages) AD

No de pièce	ADM8843

Description	4 White LED Backlight Driver

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Fabricant	AD [Analog Devices]

Site Internet	http://www.analog.com

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8 / 16 page

ADM8843

Rev. 0 | Page 8 of 16

40

45

50

60

80

90

VCC

70

55

65

75

85

VF = 4.0V

VF = 3.8V

VF = 4.3V

VF = 3.2V

VF = 3.6V

2.8

3.0

3.4

3.8

3.6

3.2

4.0

4.2

2.9

3.1

3.3

3.5

3.7

3.9

4.1

Figure 15. Power Efficiency vs. Supply Voltage over Li-Ion Range,

Four LEDs @ 15 mA/LED

CH2 2.00mV

CH1 2.00V

M 10.0ms CH2

4.36mV

2

1

VOUT

CTRL1/2

∆: 44.0ms

@: –44.4ms

C2 FALL

200

µs

LOW SIGNAL

AMPLITUDE

Figure 16. TPC Delay

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