IMP528

IMP528

4

408-432-9100/www.impweb.com

© 2001 IMP, Inc.

+

–

GND

8

7

6

5

1

2

3

4

IMP528

2.7M

Ω

910k

Ω

220

0.1

FDLL400

L

EL lamp

10nF

Note:

1. Murata part # LQH4N221K04 (DC resistance <5

Ω)

2. Larger values may be required depending upon supply impedance.

528_03.eps

10nF

200V

Figure 1. 3.0V Application

Test and Application Circuit, 3.0V

Figure 1 shows the IMP528 configured to drive an EL lamp with a

3.0V input.

Dual Supply Operation with 1.5V Battery

The IMP528 can also be operate from a single battery cell when a

regulated voltage higher than 2.0V is also available. This dual

supply configuration, shown in Figure 2, uses the regulated

voltage to operate the IMP528 while the energy for the high-

voltage boost circuit comes from the battery.

+

–

GND

8

7

6

5

1

2

3

4

IMP528

Regulated Voltage

(2.0V to 6.5V)

L

Battery

Voltage

0.1

FDLL400

EL lamp

528_04.eps

1. Larger values may be required depending upon supply impedance.

10nF

200V

Figure 2. Dual Supply Operation

Application Information