IMP527
Enable/Disable Operation
Figure 2 shows how the IMP527 can be enabled via a logic gate that
connects RSW to VDD, and disabled by connecting it to ground.
The IMP527 can also be disabled using a pad on the die. The
Disable function pin is not available in packaged parts.
Disable PAD Connection
(Available only with dice)
Enable/Disable Table
IMP527 State
RSW Connection
IMP527 State
HIGH (VDD
)
Disabled
Enabled
VDD
Ground
Enabled
Disabled
LOW (Ground)
CMOS
Gate
ON = VDD
OFF = 0V
REL
1
2
3
4
VDD
REL-OSC
8
RSW
L1
RSW-OSC
CS
V
7
6
5
A
EL lamp
D
VB
1N4148
+
VDD
–
LX
GND
IMP527
0.1µF
100V
CSW*
0.1nF
0.1µF2
CS
Note:
1. Murata part # LQH4N331K04 (DC resistance < 8.2 Ω)
2. Larger values may be required depending upon supply impedance.
527_04.eps
* Optional
Figure 2. Enable/Disable Operation
High Voltages Present
The IMP527 generates high voltages and caution should
be exercised.
Inductor Manufacturers
Manufacturer
Toko
Series
USA Phone Number
(847) 297-0070
D52FU
Coilcraft
DS1608, DO1608, DT1608
(847) 639-6400
River Electronics FLC32
(310) 320-7488
Murata
LQH4N
(800) 831-9172
ꢀ
© 2000 IMP, Inc.
6
408-432-9100/www.impweb.com
IMP [ IMP, INC ]
