sc624a Semtech Corporation, sc624a Datasheet - Page 18

• Manufacturer Part Number: sc624a
• Description: Led Light Management Unit Charge Pump, 4 Leds, Dual Ldos, And I 2 C Interface
• Manufacturer: Semtech Corporation

Register and Bit Defi nitions (continued)
BL[4:0]
These bits are used to set the current for the backlight
current sinks. All enabled backlight current sinks will sink
the same current, as shown in Table 1.
BL_4 BL_3 BL_2 BL_1 BL_0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Table 1 — Backlight Current Control Bits
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Backlight Current
(mA)
10.5
11.5
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.5
6.5
7.5
8.5
9.5
10
11
12
13
14
15
17
19
21
23
25
5
6
7
8
9
BL Enable Control Register (0x01)
This register is used to enable the backlight current
sinks.
BLEN[4:1]
These bits are used to enable current sinks (active high,
default low).
BLEN_4 — Enable bit for backlight BL4
BLEN_3 — Enable bit for backlight BL3
BLEN_2 — Enable bit for backlight BL2
BLEN_1 — Enable bit for backlight BL1
When enabled, the current sinks will carry the current set
by the backlight current control bits BL[4:0], as shown in
Table 1.
SC624A
18