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SC657 Datasheet(PDF) 17 Page - Semtech Corporation

Part # SC657
Description  Backlight Driver for 5 LEDs with SemPulseTM Interface
PDF  22 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC657 Datasheet(HTML) 17 Page - Semtech Corporation

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7
Register and Bit Definitions (continued)
Main Backlight Current Control Register (01h)
This register is used to set the currents for the backlight
current sinks assigned to the Main Backlight Group. This
group can also be used to control red LEDs for limited RGB
control. These current sinks need to be enabled in the
Backlight Enable Control register to be active.
Bit D5
This bit is unused and is always a zero, so the maximum
pulse count for this register is 3.
MBL4 — MBL0 [D4:D0]
These bits are used to set the current for the main back-
light current sinks. All enabled main backlight current
sinks will sink the same current, as shown in Table 4.
Table 4 — Main Backlight Current Settings
MBL4 MBL3 MBL2 MBL MBL0
Backlight Current (mA)
0
0
0
0
0
0
0
0
0
0

See note 
0
0
0

0
See note 
0
0
0


See note 
0
0

0
0
0.5
0
0

0

.0
0
0


0
.5
0
0



2.0
0

0
0
0
2.5
0

0
0

3.0
0

0

0
3.5
0

0


4.0
0


0
0
4.5
0


0

5.0
0



0
6.0
0




7.0

0
0
0
0
8.0

0
0
0

9.0

0
0

0
0

0
0




0

0
0
2

0

0

3

0


0
4

0



5


0
0
0
6


0
0

7


0

0
8


0


9



0
0
20



0

2




0
23





25
() Reserved for future use
SC657



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