IMP803
Test and Application Circut, 6.0V
At higher input voltage levels, the IMP803 will drive large EL
lamps. Figure 3 shows a 6.0V circuit configuration that will drive
a 10 square-inch lamp.
2MΩ
REL
1
2
3
4
VDD
RSW-OSC
CS
REL-OSC
8
7
6
5
330kΩ
2kΩ
560µH1
L
V
A
RSW
10 in2 lamp
RCL
VB
1N4148
+
LX
GND
VIN = 6.0V
–
IMP803
0.1µF
100V
0.1µF2
CS
Note:
1. Murata part # LQH4N561K04 (DC resistance <14.5 Ω)
2. Larger values may be required depending upon supply impedance.
803_11.eps
Figure 3. 6.0V Application
Enable/Disable Operation
Enable/Disable Table
RSW Connection
Figure 4 shows that the IMP803 can be enabled via a logic gate that
IMP803 State
connects RSW to VDD, and disabled by connecting it to ground.
VDD
Enabled
GND
Disabled
CMOS
Gate
ON = VDD
REL
OFF = 0V
1
2
3
4
VDD
REL-OSC
8
7
6
5
RCL
RSW
L1
RSW-OSC
CS
V
A
EL lamp
VB
1N4148
+
LX
GND
VIN
–
IMP803
0.1µF
100V
0.1µF2
CS
Note:
1. Murata part # LQH4N561K04 (DC resistance <14.5 Ω)
2. Larger values may be required depending upon supply impedance.
803_12.eps
Figure 4. Enable/Disable Operation
ꢀ
© 2000 IMP, Inc.
6
408-432-9100/www.impweb.com
IMP [ IMP, INC ]
