HV859MG-G Supertex, HV859MG-G Datasheet - Page 4

• Manufacturer Part Number: HV859MG-G
• Description: Display Drivers High Voltage Low Noise EL Lamp
• Manufacturer: Supertex

Specifications of HV859MG-G

• Mounting Style: SMD/SMT
• Package / Case: MSOP-8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Fig. 1: Typical Application/Test Circuit
Fig. 2: Split Supply and Enable/Disable Configuration
Split Supply Configuration
The HV859 can also be used for handheld devices operating
from a battery where a regulated voltage is available. This
is shown in Fig. 2. The regulated voltage can be used to
run the internal logic of the HV859. The amount of current
necessary to run the internal logic is 150µA max at a V
3.0V. Therefore, the regulated voltage could easily provide
the current without being loaded down.
OFF = 0V
ON = V
V
Regulated Voltage = V
DD
= V
DD
Supertex inc.
+
IN
-
OFF = 0V
ON = V
V
+
-
IN
DD
V
DD
DD
Enable Signal
1.0 F
1235 Bordeaux Drive, Sunnyvale, CA 94089
C
IN
Enable Signal
2.0M
560k
* Murata Inductor - LQH32CN221K21
** BAS21 - General Purpose HV diode
R
R
SW
EL
DD
1
2
3
4
VDD
RSW-Osc
REL-Osc
GND
of
1
2
3
4
4
VDD
RSW-Osc
REL-Osc
GND
HV859
The HV859 can be easily enabled and disabled via a logic
control signal on the R
below. The control signal can be from a microprocessor. R
and R
of microamperes will be drawn from the logic signal when it
is at a logic high (enable) state. When the microprocessor
signal is high the device is enabled, and when the signal is
low, it is disabled.
HV859
EL
VA
VB
CS
LX
are typically very high values. Therefore, only 10’s
VA
VB
CS
LX
8
7
6
5
Tel: [phone]
8
7
6
5
2.0k
SW
220 H*
BAS21**
and R
L
X
D
Equivalent to 3.0in
EL
www.supertex.com
resistors as shown in Fig. 2
C
3.3nF
200V
EL Lamp
S
2
10nF
lamp
HV859
SW