SP4425Q Datasheet, PDF (8/12 Pages) Sipex Corporation – Electroluminescent Lamp Driver for Low Noise Applications

The following performance curves are intended to give the designer a relative scale from which to optimize
specific applications. Absolute measurements may vary depending upon the brand of components chosen.
Lamp Frequency vs. Temperature
800
700
600
500
400
300
200
100
0
-40
0
25
70
Temperature (^OC)
3.0V
2.2V
85
Figure
7.
Coil=2mH/44Ω;
C =180pF;
OSC
C_INT=470pF; C_LOAD=4nF
Total I_CC @3V_DD vs. Temperature
40
35
30
25
20
15
10
5
0
-40
0
25
70
85
Temperature (^OC)
Figure 9. Coil=2mH/44Ω; C_OSC=180pF;
C_INT=470pF; C_LOAD=4nF
Light Output vs. Temperature
25
20
15
10
5
0
-40
0
25
70
85
Temperature (^OC)
Figure
8.
Coil=2mH/44Ω;
C =180pF;
OSC
C_INT=470pF; V_DD=3.0V; Load=3 sq.in.
SP4425 Peak-to-Peak Voltage vs. Temperature
250
200
150
100
3.0V
2.2V
50
0
-40
0
25
70
85
Temperature (^OC)
Figure 10. Coil=2mH/44Ω; C_OSC=180pF;
C =470pF; C =4nF
INT
LOAD
SP4425QDS/12
SP4425Q Electroluminescent Lamp Driver
8
© Copyright 1998 Sipex Corporation