参数资料
型号: LP5521TMEV
厂商: National Semiconductor
文件页数: 15/44页
文件大小: 0K
描述: EVAL BOARD FOR LP5521
标准包装: 1
系列: *
其它名称: Q5109809
SNVS441F – JANUARY 2007 – REVISED FEBRUAY 2013
Table 3. R_CURRENT register (05H), G_CURRENT register (06H), B_CURRENT register (07H):
Name
CURRENT
Bit
7:0
Description
Current setting
bin
0000 0000
0000 0001
0000 0010
0000 0011
0000 0100
0000 0101
0000 0110
...
1010 1111
...
1111 1011
1111 1100
1111 1101
1111 1110
1111 1111
hex
00
01
02
03
04
05
06
...
AF
...
FB
FC
FD
FE
FF
dec
0
1
2
3
4
5
6
...
175
...
251
252
253
254
255
mA
0.0
0.1
0.2
0.3
0.4
0.5
0.6
...
17.5 (def)
...
25.1
25.2
25.3
25.4
25.5
Table 4. ENABLE register (00H):
Name
LOG_EN
Name
PWM_HF
Bit
7
Bit
6
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
Description
Logarithmic PWM adjustment enable bit
0 = Linear adjustment
1 = Logarithmic adjustment
Table 5. CONFIG register (08H):
Description
PWM clock frequency
0 = 256 Hz, frequency defined by 32 kHz clock (internal or external)
1 = 558 Hz, frequency defined by internal oscillator
LOG_EN = 0
LOG_EN = 1
0
0
16
32
48
64
80
96 112 128 144 160 176 192 208 224 240 255
CONTROL (DEC)
Figure 25. Logarithmic and Linear PWM Adjustment Curves
Copyright ? 2007–2013, Texas Instruments Incorporated
Product Folder Links: LP5521
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