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SC668
Typical Characteristics — Backlights (continued)
Group #1 Blink Function (25mA)
Start time = 32ms, target time = 3072ms
Group #1 Breathe Function (20mA to 0.5mA)
Breathe rate = 24ms, start time = 32ms, target time = 1024ms
— 25mA
— 20mA
I BL (10mA/div)
0mA
Time (400ms s ?div)
Bank #1 with ADP (rate = 256 μ s)
Battery transient condition: 100Hz, 12.5% duty cycle
I BL (10mA/div)
— 0.5mA
Time (1000ms s ?div)
Backlight with ADP (rate = 4 m s)
Battery transient condition: 50Hz, 30% duty cycle
I BL (10mA/div)
15mA
15mA
11mA
I BL (10mA/div)
15mA 14
13
12
11
10
9
8mA
0mA
3.40V
V IN (500mV/div)
3.05V
Time (10ms s ?div)
Backlight Dimming with ALS and Fade
V IN = 3.7V, V LDO4 = 2.8V, AD RISE = B0h, AD FALL = 80h, 4ms fade rate
V IN (500mV/div)
3.32V
2.98V
Time (20ms s ?div)
I BL (10mA/div)
10mA
0mA —
2.8V —
V ADI (1V/div)
0V —
0.5mA
ADC reference
brighter
ambient
lighting
dimmer
Time (1000ms s ?div)
0.5mA
8
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