Microchip HV853DB1 Bedienungsanleitung
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Supertex inc.
Supertex inc.
www.supertex.com
HV853DB1
Doc.# DSDB-HV853DB1
A032813
General Description
The Supertex HV853DB1 demoboard contains all the
necessary circuitry to demonstrate the features of the HV853
EL lamp driver. The HV853 is the low noise version of the EL
driver HV852 with improved EMI performance.
Simply connect it to a power supply and a lamp as shown in
Figure 1. For additional assistance with the HV853 demoboard
circuit, please refer to the HV853 datasheet.
High Voltage, Low Noise, Inductorless
EL Lamp Driver Demoboard
Specications
Parameter Value
Input voltage:3.2V to 5.0V
Supply current:18mA
Lamp size:0.93in2 and 1.5in2
Lamp frequency:274Hz
Connections:
VDD (IC Supply)
Supplies the HV853 EL driver IC. The supplied demoboard
is optimized for 3.2 to 5.0V operation.
EN (Enable Input)
A logic input which enables/disables the driver. Connect
EN to logic high (VDD) to enable the driver and to logic low
(GND) to disable the driver. This input may be connected to
a mechanical switch or to a logic circuit output.
CLKIN (Clock Input)
A logic input pin to which an external clock can be applied to
set the EL lamp frequency. CLKEN has to be connected to
VDDwhen external clock input is used. Also, the REL resistor
needs to be removed and the REL pin needs to be connected
to ground. Connect CLKIN to GND if not used.
GND (Circuit Ground)
Connect to VDD negative terminal. Supply bypass capaci-
tor for VDD is provided on the demoboard. External supply
bypass capacitors are not required.
VA and VB (Lamp Connections)
They connect to EL lamp terminals. Polarity is irrelevant.
CLKEN (Clock Enable)
Logic input pin which enables/disables the external clock ap-
plied. Logic high (VDD) will cause the EL lamp frequency to
be set by the CLKIN input. Logic low (GND) will cause the EL
lamp frequency to be set by the external REL resistor.
Note:
All of the above connections must be made before powering up the supply voltages.
Board Layout and Connection Diagram
Actual Dimensions: 13mm x 8mm
VDD
EN
CLKIN
GND
VA
VB
CLKEN
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | HV853DB1 |
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