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LDS9003 Datenblatt(PDF) 10 Page - IXYS Corporation

Teilenummer LDS9003
Bauteilbeschribung  High Power LED Temperature and PWM Controller with LED-SenseTM In-Situ LED TJ Sensing
PDF  30 Pages
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Hersteller  IXYS [IXYS Corporation]
Direct Link  http://www.ixys.com
Logo IXYS - IXYS Corporation

LDS9003 Datenblatt(HTML) 10 Page - IXYS Corporation

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LDS9003 / 9001
© 2009 IXYS Corp.
10
Doc. No. 9003/9001_DS, Rev. N1.0
Characteristics subject to change without notice
Table 8:
ΔPWM CorrectionCode Allocation
Data bits
Data bits
7 – 4
3 – 0
7 – 4
3 – 0
Register
Address
ΔPWM code for
temperature,
0C
Register
Address
ΔPWM code for
temperature,
0C
50h, 60h, 70h
-30
-35
58h, 68h, 78h
50
45
51h, 61h, 71h
-20
-25
59h, 69h, 79h
60
55
52h, 62h, 72h
-10
-15
5Ah, 6Ah, 7Ah
70
65
53h, 63h, 73h
0
-5
5Bh, 6Bh, 7Bh
80
75
54h, 64h, 74h
10
5
5Ch, 6Ch, 7Ch
90
85
55h, 65h, 75h
20
15
5Dh, 6Dh, 7Dh
100
95
56h, 66h, 76h
30
25
5Eh, 6Eh, 7Eh
110
105
57h, 67h, 77h
40
35
5Fh, 6Fh, 7Fh
120
115
Table 9:
ΔPWM Codes Codes vs. Number of Adjustment Steps
Number of
steps
Binary
Code
Number of
steps
Binary
Code
Number of
steps
Binary
Code
Number of
steps
Binary
Code
Not Valid
1000
-4
1100
0
0000
4
0100
-7
1001
-3
1101
1
0001
5
0101
-6
1010
-2
1110
2
0010
6
0110
-5
1011
-1
1111
3
0011
7
0111
PROGRAMMING EXAMPLES
Operation
Register
Address
Register Data
Command
(hex)
Disable Temperature De-rating (DT_Adjust_disable)
1Eh
04h
XX 1E 04
Re-Enable Temperature De-rating
1Eh
00h
XX 1E 00
Short/open LED diagnostic request
19h
20h
XX 19 20
Read out LED short to GND status
1Ch
XX 1C YY
Read out LED short to VIN/open status
1Dh
XX 1D YY
Set Standby Mode
1Fh
40h
XX 1F 40
Resume normal operation from standby mode
1Fh
00h
XX 1F 00
Calibration request (conduct temperature calibration)
1Fh
10h
XX 1F 10
Set LEDs in shutdown mode at junction temperature above 100
0
C
4Ah
1Bh
XX 4A 1B
Set Ta-Tj offset for LED and Si Diode to -20ºC
49h
CCh
XX 49 CC
Software Reset (to default values) and/or clear of all registers
1Fh
80h
XX 1F 80
Note:
XX – The LD9003/9001 I
2C customer-selected slave address followed by binary 1 for write command, i.e. if I2C slave address is
001 0001 (see Table 8), XX = 0010 0011 (bin) = 23h
YY – The 90003/9001 I
2C customer-selected slave address followed by binary 0 for read command, i.e. if I2C slave address is
001 0001 (see Table 8), YY = 0010 0010 (bin) = 22h



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