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ADP5501 Datasheet(PDF) 7 Page - Analog Devices

Part # ADP5501
Description  Programmable Current Backlight Driver with Ambient Light Sensor Input
PDF  28 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP5501 Datasheet(HTML) 7 Page - Analog Devices

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ADP5501
Rev. 0 | Page 7 of 28
40
0246
8
10 12 14 16 18 20 22 24 26 28 30
BACKLIGHT CURRENT (mA)
TYPICAL PERFORMANCE CHARACTERISTICS
VBAT = 3.6 V, TA = 25°C, unless otherwise noted. Inductor = LPS4012-472MLB. Schottky rectifier = MBR140SFT1G.
90
85
80
75
70
65
60
55
50
45
6 LEDs, VBAT = 3.0V
6 LEDs, VBAT = 3.6V
6 LEDs, VBAT = 4.2V
6 LEDs, VBAT = 5.5V
48
40
32
24
16
8
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
VBAT (V)
TEMP = –40°C
TEMP = +25°C
TEMP = +85°C
Figure 4. Efficiency vs. Backlight Current (6 LEDs)
90
85
80
75
70
65
60
55
50
45
40
0246
8
10 12 14 16 18 20 22 24 26 28 30
BACKLIGHT CURRENT (mA)
6 LEDs, VBAT = 3.6V
5 LEDs, VBAT = 3.6V
4 LEDs, VBAT = 3.6V
40
0246
8
10 12 14 16 18 20 22 24 26 28 30
BACKLIGHT CURRENT (mA)
Figure 5. Efficiency vs. Backlight Current (4, 5, and 6 LEDs)
90
85
80
75
70
65
60
55
50
45
6 LEDs, VBAT = 4.2V
6 LEDs, VBAT = 4.2V,
AUTOLOAD-ENABLED
Figure 6. Efficiency vs. Backlight Current (Autoload On/Off)
Figure 7. Standby Supply Current vs. VBAT
16
14
12
10
8
6
4
2
0
0
0.5
1.0
1.5
2.0
2.5
3.0
AUX LED PIN VOLTAGE (V)
Figure 8. Typical Auxiliary LED Pin (LED0, LED1, LED2), Full-Scale
Sink Current vs. Applied Pin Voltage



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