IC-HTP Datasheet, PDF (16/51 Pages) IC-Haus GmbH – DUAL CW P-TYPE LASER DIODE DRIVER

iC-HTP
DUAL CW P-TYPE
LASER
DIODE
DRIVER
preliminary
CRNG1(1:0)
Addr. 0x1E; bit 1:0
R/W 00
00
Output current range from 0 to 750 mA, RACC1 = 0,
k factor set to 750/750 = 1
01
Output current range from 0 to 100 mA, RACC1 = 0,
k factor set to 100/750,= 0.13
10
Output current range from 0 to 25 mA, RACC1 = 0, k
factor set to 25/750 = 0.03
11
Output current range from 0 to 9 mA, RACC1 = 0, k
factor set to 9/750 = 0.012
00
Output current range from 0 to 90 mA, RACC1 = 1, k
factor set to 750/750 = 1
01
Output current range from 0 to 12 mA, RACC1 = 1, k
factor set to 100/750 = 0.13
10
Output current range from 0 to 3 mA, RACC1 = 1, k
factor set to 25/750 = 0.03
11
Output current range from 0 to 1.1 mA, RACC1 = 1, k
factor set to 9/750 = 0.012
Table 16: Current range channel 1
Rev B1, Page 16/51
ILIM1
0x00
...
0xFF
Addr. 0x11; bit 7:0
R/W 0xFF
Channel 1 overcurrent threshold set to the minimum
current in APC mode (EACC1 = 0) or overcurrent
protection disabled in ACC mode (EACC1 = 1)
Channel 1 overcurrent threshold set to
Ilim = (∆I(LDA), max · n · k), n from 0 to 255
Channel 1 overcurrent threshold set to the maximum
current
Table 18: Overcurrent threshold configuration
channel 1
ILIM2
0x00
...
0xFF
Addr. 0x16; bit 7:0
R/W 0xFF
Channel 2 overcurrent threshold set to the minimum
current in APC mode (EACC2 = 0) or overcurrent
protection disabled in ACC mode (EACC2 = 1)
Channel 2 overcurrent threshold set to
Ilim = (∆I(LDA), max · n · k), n from 0 to 255
Channel 2 overcurrent threshold set to the maximum
current
Table 19: Overcurrent threshold configuration
channel 2
CRNG2(1:0)
Addr. 0x1E; bit 5:4
R/W 00
00
Output current range from 0 to 750 mA, RACC2 = 0,
k factor set to 750/750 = 1
01
Output current range from 0 to 100 mA, RACC2 = 0,
k factor set to 100/750,= 0.13
10
Output current range from 0 to 25 mA, RACC2 = 0, k
factor set to 25/750 = 0.03
11
Output current range from 0 to 9 mA, RACC2 = 0, k
factor set to 9/750 = 0.012
00
Output current range from 0 to 90 mA, RACC2 = 1, k
factor set to 750/750 = 1
01
Output current range from 0 to 12 mA, RACC2 = 1, k
factor set to 100/750 = 0.13
10
Output current range from 0 to 3 mA, RACC2 = 1, k
factor set to 25/750 = 0.03
11
Output current range from 0 to 1.1 mA, RACC2 = 1, k
factor set to 9/750 = 0.012
Table 17: Current range channel 2
An overcurrent event can be simulated using SOVCx.
If SOVCx = 1, the corresponding overcurrent error bit
OVCx will be set to 1, the error will be signaled at
NCHK and the corresponding laser channel will be dis-
abled. The overcurrent error will remain forced until
SOVCx = 0.
SOVC1
0
1
Addr. 0x1D; bit 5
R/W 0
No Overcurrent event at channel 1 is simulated
Overcurrent event at channel 1 simulated
Table 20: Simulate overcurrent channel 1
SOVC2
0
1
Addr. 0x1D; bit 6
R/W 0
No overcurrent event at channel 2 is simulated
Overcurrent event at channel 2 simulated
Table 21: Simulate overcurrent channel 2