IMP560

IMP560

6

408-432-9100/www.impweb.com

© 2000 IMP, Inc.

Enable/Disable Operation

Figure 3 shows the IMP560 can be enabled via a logic gate that con-

IMP560 State

Enabled

Ground

Disabled

Figure 3. Enable/Disable Operation

+

–

OFF = 0V

GND

8

7

6

5

1

2

3

4

IMP560

CMOS

Gate

0.1

15V

1N4148

EL lamp

Note:

1. Murata part # LQH4N561K04 (DC resistance <14.5

Ω)

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

560_11.eps

0.1

µF

100V

Enable/Disable Table

Dual Supply Operation with 1.5V Battery

The IMP560 can also be operate from a single battery cell when a

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

supply configuration, shown in Figure 4, uses the regulated

voltage to operate the IMP560 while the energy for the high-

voltage boost circuit comes from the battery. The current to run

the internal logic is typically 420

µA.

The circuit of Figure 4 can also be used with batteries that exceed

+

–

GND

8

7

6

5

1

2

3

4

IMP560

Regulated Voltage

(2.0V to 6.5V)

L

Battery

Voltage

0.1

1N4148

EL lamp

560_12.eps

0.1

µF

100V

* Larger values may be required

depending upon supply impedance

OFF = 0V

Figure 4. Dual Supply Operation with High Battery Voltages