ADP5501 datasheet(8/28 Pages) AD

Part #	ADP5501

Description	Programmable Current Backlight Driver with Ambient Light Sensor Input

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Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

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ADP5501

Rev. 0 | Page 8 of 28

1

2

3

TIME (4µs/DIV)

CH1 20.0V

CH3 10.0V

CH2 500mA

CH4 1.0V

4

SW

INDUCTOR CURRENT

BST

BL_SNK

Figure 9. Boost Operation (Backlight = 30 mA)

TIME (4µs/DIV)

1

2

3

4

CH1 20.0V

CH3 10.0V

CH2 500mA

CH4 1.0V

SW

INDUCTOR CURRENT

BST

BL_SNK

Figure 10. Boost Operation (Backlight = 15 mA)

TIME (4µs/DIV)

1

2

3

4

CH1 20.0V

CH3 10.0V

CH2 500mA

CH4 1.0V

SW

INDUCTOR CURRENT

BST

BL_SNK

Figure 11. Boost Operation (Backlight = 2 mA)

TIME (1ms/DIV)

1

2

3

4

CH1 10.0V

CH3 10.0V

CH2 500mA

CH4 1.0V

SW

INDUCTOR CURRENT

BST

BL_SNK

Figure 12. Boost Startup

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