11-14-00

SP4501 EL Plus Piezo Driver

© Copyright 2000 Sipex Corporation

7

PERFORMANCE CHARACTERISTICS

0

10

20

30

40

50

60

70

0

1000

2000

3000

4000

5000

6000

7000

frequency (Hz)

Figure 3: Supply Current and Cap Pin Voltage vs.

Oscillator Resistance.

Figure 5: Supply Current and Luminance vs. Supply

Voltage.

Figure 7: Piezo Output Voltage vs. PZCK Input

Frequency.

Figure 6: Supply Current and Luminance vs. Inductor

Value.

Figure 4: Lamp Frequency and Luminance vs.

Oscillator Frequency.

0

10

20

30

40

50

60

70

80

90

100

400

500

600

700

800

900

1000

Inductor Value (

µH)

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

Lumi.

0

10

20

30

40

50

60

70

80

90

100

200

400

600

800

1000

R

V

CAP,pk

I

DD

V

CAP,pk

100

150

200

250

300

350

400

450

500

550

600

200

400

600

800

1000

R

Freq.

Lumi.

0

20

40

60

80

100

120

140

2.0

3.0

4.0

5.0

6.0

V

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

Lumi.

V

CAP,pk

I

DD

I

DD

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0