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SC620
Applications Information (continued)
Backlighting Three LEDs of Any Color Combination
Plus Lens Voice Coil Drive and One GPO
This example uses the SC620 to drive 3 backlight LEDs,
plus a voice coil actuator for lens auto-focus and one
open-drain digital output. Independent outputs allow
these functions to be supported simultaneously. The V IN
supply is typically single cell Li-Ion or 5.0V. V IN and the
LED anode voltage may be supplied by different sources.
The operating voltage limit of (V IN - 1.5V) at the sink pins
must be observed to achieve the specified accuracy of the
device.
V BAT = 2.7V to 5.5V
LED Backlighting
Main Panel
V LOGIC
Lens Focusing
V BAT
Voice
SCL
1 μ F
2
11
IN
SCL
SC620
ILED1
ILED2
5
6
Coil
SDA
EN
10
3
SDA
EN
ILED3
ILED4
7
8
Digital Output Expander
GPO
1
4
9
12
GND
GND
GND
GND
ILED5
ILED6
ILED7
ILED8
13
14
15
16
12
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相关代理商/技术参数
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