LM3530UME-40/NOPB National Semiconductor, LM3530UME-40/NOPB Datasheet - Page 20

• 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

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BRT Data
(Hex)
0x0C
0x0D
0x1C
0x0A
0x0B
0x0E
0x0F
0x1A
0x1B
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
% Full-Scale
Current
0.080%
0.086%
0.094%
0.102%
0.109%
0.117%
0.125%
0.133%
0.141%
0.148%
0.156%
0.164%
0.172%
0.180%
0.188%
0.203%
0.211%
0.227%
0.242%
0.250%
0.266%
0.281%
0.297%
0.320%
0.336%
0.352%
0.375%
0.398%
0.00%
TABLE 2. I
BRT Data
(Hex)
0x2A
0x2B
0x2C
0x2D
0x2E
0x3A
0x3B
0x3C
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2F
0x30
0x31
0x32
0x33
0x34
0x35
0x36
0x37
0x38
0x39
LED
FIGURE 11. Exponential Brightness Mapping
vs. Brightness Register Data (Exponential Mapping)
% of Full-
Current
0.500%
0.523%
0.555%
0.586%
0.617%
0.656%
0.695%
0.734%
0.773%
0.820%
0.867%
0.914%
0.969%
1.031%
1.078%
1.148%
1.219%
1.281%
1.359%
1.430%
1.523%
1.594%
1.688%
1.781%
1.898%
2.016%
2.109%
2.250%
2.367%
Scale
20
BRT Data
(Hex)
0x4A
0x4B
0x4C
0x4D
0x4E
0x5A
0x5B
0x5C
0x40
0x41
0x42
0x43
0x44
0x45
0x46
0x47
0x48
0x49
0x4F
0x50
0x51
0x52
0x53
0x54
0x55
0x56
0x57
0x58
0x59
% of Full-Scale
10.078%
10.781%
11.250%
11.953%
12.656%
13.359%
14.219%
Current
2.953%
3.125%
3.336%
3.500%
3.719%
3.906%
4.141%
4.375%
4.648%
4.922%
5.195%
5.469%
5.781%
6.125%
6.484%
6.875%
7.266%
7.656%
8.047%
8.594%
9.063%
9.609%
BRT Data
(Hex)
0x6C
0x6D
0x7C
0x6A
0x6B
0x6E
0x6F
0x7A
0x7B
0x60
0x61
0x62
0x63
0x64
0x65
0x66
0x67
0x68
0x69
0x70
0x71
0x72
0x73
0x74
0x75
0x76
0x77
0x78
0x79
30086618
% of Full-Scale
17.813%
18.750%
19.922%
20.859%
22.266%
23.438%
24.844%
26.250%
27.656%
29.297%
31.172%
32.813%
34.453%
35.547%
38.828%
41.016%
43.203%
45.938%
48.438%
51.406%
54.141%
57.031%
60.703%
63.984%
67.813%
71.875%
75.781%
79.688%
84.375%
Current