Microchip HV833DB1 Bruksanvisning
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Supertex inc.
Supertex inc.
www.supertex.com
HV833DB1
Doc.# DSDB-HV833DB1
B032114
The Supertex HV833DB1 demoboard contains all necessary
circuitry to demonstrate the features of the HV833 EL lamp driver.
Simply connect it to a power supply and a lamp as shown below.
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-H45 (EL Lamp
Driver Circuits to Reduce Lamp Audible Noise).
Board Layout and Connections
High Voltage
EL Lamp Driver Demoboard
Connections:
EN - Enable Input
Enables/Disables the lamp driver. A logic high (VDD) enables
the driver and a logic low (GND) disables the driver. This
input may be connected to a mechanical switch, or to a
logic circuit output that has a source impedance of less than
20K .Ω
VDD - IC Supply
Supplies the HV833 EL driver IC. The supplied circuit is
optimized for 1.8 to 6.5 volt operation.
VIN - Inductor Supply
Supplies the high voltage power converter.
GND - Circuit Ground
Connect to VDD and VIN negative terminals. Supply bypass
capacitor for both VDD and VIN are provided on the demo
board. External supply bypass capacitors are not necessary.
VA and VB - Lamp Connections
Connect to an EL lamp. Polarity is irrelevant.
Parameter Value
Input voltage1.8 to 6.5V
Supply current45mA
Lamp size range 5.5in2 to 10in2
Lamp frequency250Hz
Converter frequency70kHz
General Description
HV833
Rsw
REL
CDD
CIN
DIODE
VDD
EN
VIN
GND
VB
VA
EL Lamp
ON
OFF
1.8 - 6.5V
LX
CS
Specications
Produktspecifikationer
| Varumärke: | Microchip |
| Kategori: | Inte kategoriserad |
| Modell: | HV833DB1 |
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