IC-WJZ Datasheet, PDF (1/3 Pages) IC-Haus GmbH – APPLICATION NOTES

iC-WJ, iC-WJZ
APPLICATION NOTES
LASER DIODE OUTPUT WAVEFORMS
Sep 19 2000, Page 1/3
Fig. 1: the lowest operating frequency permitted is determined by a limit of 10% max. overshooting
Fig. 2: setup ok, the time constant given by RSET x CI suits the operating frequency ideal
Fig. 3: switch delay on leading edge starts to effect the duty cycle and thus the pulse power
TYPICAL OPERATIONAL CHARACTERISTICS (taken on iC-WJ)
Operating Conditions: VCC= 5V, Tj= 25EC, unless otherwise noted
Item Symbol Parameter
Conditions
CW Operation (IN= VCC)
1 ton()
Power-on Delay
2
3
Operating Frequency (50% duty cycle)
4 f(IN)
Clock Frequency at IN
5
6
7
8
9
10
11
12
13
14
15
CI, RSET, CWD:
22nF, 15k, -pF
470nF, 15k, 100pF
4.7µF, 15k, 1000pF
CI, RSET, CWD:
100nF, 15k, - pF
see #4
see #4
220nF, 15k, -pF
see #7
see #7
470nF, 15k, 100pF
see #10
see #10
4.7µF, 15k, 1000pF
see #13
see #13
Tj Fig.
EC
Min.
Typ.
Unit
Max.
0.54
ms
11
ms
120
ms
1
65
kHz
2
150
kHz
3
400
kHz
1
30
kHz
2 120
150
250 kHz
3
400
kHz
1
10
kHz
2
60
100
250 kHz
3
400
kHz
1
1.8
kHz
2
30
100
250 kHz
3
350
kHz