Microchip HV861DB1 Bedienungsanleitung
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Supertex inc.
Supertex inc.
www.supertex.com
HV861DB1
Doc.# DSDB-HV861DB1
A032813
General Description
The Supertex HV861DB1 demoboard contains all the
necessary circuitry to demonstrate the features of the HV861
dual EL Lamp driver.
Simply connect it to a power supply and a lamp as shown in
Figure 1.
A 2.2µF capacitor is connected between VREF and GND. It
allows the lamp to slowly (in about 400ms) brighten up/dim
down during power up/power down. The dimming feature is
common to both lamps.
Board Layout
Dimmable, Low Noise, Dual EL Lamp
Driver Demoboard
Specications
Parameter Value
VDD input voltage:2.5V to 4.5V
VIN inductor supply voltage:3.2V to 4.2V
Typical supply current:28mA
Lamp size:4.5in2
Lamp frequency:188Hz
Converter frequency:98kHz
Connections:
EN1 and EN2: Lamp Selection
CMOS logic inputs which enable/disable the lamp drivers.
When EN1 is connected to VDD/GND, Lamp 1 (EL1) will
be ON/OFF. When EN2 is connected to VDD/GND, Lamp 2
(EL2) will be ON/OFF.
VDD: IC Supply
Supplies the HV861 EL driver IC. The supplied circuit is op-
timized for 3.0V operation.
VIN: Inductor Supply
Supplies the high voltage power converter. The demoboard
is optimized for 3.2V to 4.2V operation
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.
EL1 and EL2: Lamp Connections
Connects to Lamps 1 and 2.
COM1 and COM2: Lamp Connections
Connects to the other side of Lamps 1 and 2.
Actual Dimensions: 26mm x 24mm
Notes:
All of the above connections must be made before powering up the supply voltages.
The VREG pin should not be touched after power-up.
EL1
COM1
COM2
EL2
VDD
EN1
EN2
GND
VIN
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | HV861DB1 |
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