HV857DB1 Supertex, HV857DB1 Datasheet
HV857DB1
Manufacturer Part Number
HV857DB1
Description
Optical Sensor Development Tools HV857 Demo Board
Manufacturer
Supertex
Specifications of HV857DB1
Operating Voltage
1.8 V to 5 V
Operating Current
26 mA
Description/function
EL Driver Demo Board
For Use With/related Products
HV857
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
General Description
The Supertex HV857DB1 demoboard contains all
necessary circuitry to demonstrate the features of the
HV857 EL lamp driver.
Simply connect it to a power supply and a lamp. For
additional assistance in designing EL driver circuits,
please refer to application notes AN-H33 (effect of
external components on performance of Supertex
EL drivers) and AN-H43 (EL lamp driver circuits to
reduce audible noise).
Board Layout and Connection Diagram
Connections:
EN - Enable Input
Enables/Disables the lamp driver. A logic high (connect
to V
GND) disables the driver. This input can be connected to
a mechanical switch or to a logic circuit output that has a
source impedance of less than 20kΩ.
V
Supplies the HV857 EL driver IC. The supplied circuit is
optimized for 3.0V operation. The operating range can be
from 1.8 to 5.0V. Connect to positive terminal of a power
supply.
Supertex inc.
Note:
DD
Make sure all the above connections are made before powering up the supply voltages.
- IC Supply
DD
) enables the driver, and a logic low (connect to
Supertex inc.
Actual Dimensions: 12mm x 12mm
EL Lamp Driver IC Demoboard
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
Low Noise, High Voltage
1
Specifications
Parameter
Input voltage:
Typical supply current:
Lamp size:
Lamp frequency:
Converter frequency:
V
Supplies the high voltage power converter. Connect to
positive terminal of a power supply.
GND - Circuit Ground
Connect to V
capacitor for both V
board. External supply bypass capacitors are not required.
V
Connect to an EL lamp. Polarity is irrelevant.
A
IN
and V
- Inductor Supply
B
- Lamp Connections
GND
●
EN
V
IN
Tel: 408-222-8888
DD
R
R
V
SW
EL
and V
DD
DD
IN
C
and V
C
L
negative terminals. Supply bypass
IN
X
DD
●
HV857
HV857
IN
www.supertex.com
are provided on the demo
V
A
C
HV857DB1
S
D
V
B
1.8 to 5.0V
206Hz
80kHz
Value
26mA
2.6in
2
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HV857DB1 Summary of contents
Page 1
... Supertex inc. EL Lamp Driver IC Demoboard General Description The Supertex HV857DB1 demoboard contains all necessary circuitry to demonstrate the features of the HV857 EL lamp driver. Simply connect power supply and a lamp. For additional assistance in designing EL driver circuits, please refer to application notes AN-H33 (effect of external components on performance of Supertex EL drivers) and AN-H43 (EL lamp driver circuits to reduce audible noise) ...
Page 2
... Package - 0805 0805 0805 0805 0603 SOT- 8-Lead MSOP does not assume responsibility for use of devices described, and limits its liability Supertex inc. Supertex inc. 2 HV857DB1 EL Lamp BAS21 L X 220µ 3.3nF 100V Brightness f EL (Hz) ft-lm cd/ 206 3.65 206 4 ...