IC-WJZ 参数 Datasheet PDF下载

iC-WJ, iC-WJZ

APPLICATION NOTES

Sep 19 2000, Page 1/3

LASER DIODE OUTPUT WAVEFORMS

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= 25

E

C, unless otherwise noted

Item

Symbol

Parameter

Conditions

Tj

Fig.

Min.

Typ.

Max.

Unit

E

C

CW Operation (IN= VCC)

1

2

3

Operating Frequency (50% duty cycle)

4

5

6

7

8

9

10

11

12

13

14

15

f(IN)

Clock Frequency at IN

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

1

2

3

1

2

3

1

2

3

1

2

3

ton()

Power-on Delay

CI, RSET, CWD:

22nF, 15k, -pF

470nF, 15k, 100pF

4.7µF, 15k, 1000pF

0.54

11

120

ms

ms

ms

65

150

400

30

120

150

400

10

60

100

400

1.8

30

100

350

250

250

250

kHz

kHz

kHz

kHz

kHz

kHz

kHz

kHz

kHz

kHz

kHz

kHz