LM3530UME-40/NOPB National Semiconductor, LM3530UME-40/NOPB Datasheet - Page 21

• Manufacturer Part Number: LM3530UME-40/NOPB
• Description: IC LED DRVR PROGRAM I2C 12USMD
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM3530UME-40/NOPB

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 500kHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 12-UFBGA
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: Adjustable
• Led Driver Application: LED Backlighting, Portable Electronics
• No. Of Outputs: 1
• Output Current: 29.5mA
• Output Voltage: 40V
• Input Voltage: 2.7V To 5.5V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Other names: LM3530UME-40TR

BRT Data
BRT Data
(Hex)
0x0A
0x0B
0x0C
0x0D
0x0E
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
(Hex)
0x1D
0x1E
0x1F
% Full-Scale
% Full-Scale
Current
(Linear)
Current
10.24%
11.02%
11.81%
12.60%
13.39%
14.17%
14.96%
15.75%
16.54%
0.422%
0.445%
0.469%
0.00%
0.79%
1.57%
2.36%
3.15%
3.94%
4.72%
5.51%
6.30%
7.09%
7.87%
8.66%
9.45%
TABLE 3. I
BRT Data
BRT Data
(Hex)
0x3D
0x3E
0x3F
(Hex)
0x2A
0x2B
0x2C
0x2D
0x2E
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2F
0x30
0x31
0x32
0x33
0x34
0x35
LED
FIGURE 12. Linear Brightness Mapping
vs. Brightness Register Data (Linear Mapping)
% of Full-
Current
2.508%
2.648%
2.789%
% of Full-
Scale
Current
(Linear)
Scale
25.20%
25.98%
26.77%
27.56%
28.35%
29.13%
29.92%
30.71%
31.50%
32.28%
33.07%
33.86%
34.65%
35.43%
36.22%
37.01%
37.80%
38.58%
39.37%
40.16%
40.94%
41.73%
21
BRT Data
BRT Data
(Hex)
0x5D
0x5E
0x5F
(Hex)
0x4C
0x4D
0x40
0x41
0x42
0x43
0x44
0x45
0x46
0x47
0x48
0x49
0x4A
0x4B
0x4E
0x4F
0x50
0x51
0x52
0x53
0x54
0x55
% of Full-Scale
% of Full-Scale
15.000%
15.859%
16.875%
Current
Current
(Linear)
50.39%
51.18%
51.97%
52.76%
53.54%
54.33%
55.12%
55.91%
56.69%
57.48%
58.27%
59.06%
59.84%
60.63%
61.42%
62.20%
62.99%
63.78%
64.57%
65.35%
66.14%
66.93%
BRT Data
BRT Data
(Hex)
0x7D
0x7E
0x7F
30086619
(Hex)
0x6A
0x6B
0x6C
0x6D
0x6E
0x60
0x61
0x62
0x63
0x64
0x65
0x66
0x67
0x68
0x69
0x6F
0x70
0x71
0x72
0x73
0x74
0x75
% of Full-Scale
Scale Current
89.844%
94.531%
100.00%
Current
% of Full-
(Linear)
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75.59%
76.38%
77.17%
77.95%
78.74%
79.53%
80.31%
81.10%
81.89%
82.68%
83.46%
84.25%
85.04%
85.83%
86.61%
87.40%
88.19%
88.98%
89.76%
90.55%
91.34%
92.13%