HV825DB1 Supertex, HV825DB1 Datasheet - Page 2

• Manufacturer Part Number: HV825DB1
• Description: Power Management IC Development Tools EL LAMP DRIVER DEMOBOARD
• Manufacturer: Supertex

Specifications of HV825DB1

• Product: Power Management Development Tools
• Tool Is For Evaluation Of: HV825
• Description/function: EL Driver Demo Board
• Factory Pack Quantity: 1

HV825DB1 Circuit Schematic
Modifiying the Supplied Circuit
The supplied circuit is optimized to drive a 1.5in
To better suit other applications, the circuit can be modified
by changing one or more components. The following table
lists the typical performance of the HV825 driving a 1.5in
and a 2.7in
Notes:
120711
©2011
Note:
Supertex inc.
an adequate “product liability indemnification insurance agreement.”
to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and
specifications are subject to change without notice. For the latest product specifications refer to the
1. Lamp brightness can vary by type and manufacturer.
2. The recommended inductor is a Murata LQH4N series. Other inductors may be used, however, different inductor characteristics (especially
series resistance) may result in overall circuit performance different from that listed. Please refer to Application Note AN-H33 for more information.
Enable
1. Tie V
Lamp
Supertex inc.
Size
C
(in
1.5
2.7
DD
2
)
is not needed when a single supply is used.
DD
and V
2
lamp.
does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives
ON = V
OFF = GND
Brightness
IN
together if split suppies are not used.
All rights reserved. Unauthorized use or reproduction is prohibited.
Lamp
(ft-lm)
3.6
3.3
GND
DD
V
V
DD
IN
1
Note 1
Green
Green
Lamp
Color
C
100nF
DD
Lamp
Freq
450
300
(Hz)
2
C
4.7µF
green lamp.
IN
Supertex inc.
560µH
L
Current
2
(mA)
V
27
45
2
IN
1N4148
The demo board can be easily modified to drive 2.7in2 by
changing the inductor, C
component locations, refer to the board layout and connec-
tion diagram at the begining of this note. The circuits are
designed to operate from a single 1.5V supply connected to
V
does not assume responsibility for use of devices described, and limits its liability
D
DD
and V
Supertex inc.
IN
560
330
(µH)
R
1.0MΩ
.
L
C
100nF
EL-Osc
2
S
C
1.0nF
(website: http//www.supertex.com)
Component Values
1235 Bordeaux Drive, Sunnyvale, CA 94089
SW
(MΩ)
R
1.0
2.0
S
R
1.0MΩ
SW-Osc
EL
capacitor and the R
Supertex inc.
RSW
CS
LX
VDD
HV825
GND
REL
VA
VB
R
(KΩ)
1.0
1.0
SW
www.supertex.com
Tel: [phone]
EL
resistor. For
100
(nF)
C
10
S
EL
Lamp