HV845DB1 Supertex, HV845DB1 Datasheet

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HV845DB1

Manufacturer Part Number
HV845DB1
Description
Manufacturer
Supertex
Datasheet
1.HV845DB1.pdf (2 pages)

Specifications of HV845DB1

Lead Free Status / Rohs Status
Not Compliant
General Description
The Supertex HV845DB1 demoboard contains all necessary
circuitry to demonstrate the features of the HV845 dual 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).
Board Layout and Connection Diagram
Connections:
Controls C
Various modes of the device are selected via the C
pins. When C
ON/OFF. When C
be ON/OFF. When both C
the device shuts down. These inputs may be connected to
a mechanical switch, or to a logic circuit output that has a
source impedance of less than 20kΩ.
V
Supplies the HV845 EL driver IC. The supplied circuit is
optimized for 3.0V operation.
V
Supplies the high voltage power converter. The demoboard
is optimized for 3.3V to 4.2V operation.
Supertex inc.
DD
IN
: Inductor Supply
: IC Supply
Supertex inc.
1
1
is connected to V
and C
2
is connected to V
2
: Lamp Selection
1
and C
DD
GND
/GND, Lamp 1 (EL
VDD
EL Lamp Driver Demoboard
VIN
2
●
C1
C2
DD
are connected to GND,
1235 Bordeaux Drive, Sunnyvale, CA 94089
/GND, lamp 2 (EL
Low Noise, Dual
Actual Size: 17.3mm x 14.4mm
1
1
) will be
and C
2
) will
2
Specifications
Parameter
V
V
Supply current:
Lamp size:
Lamp frequency:
Converter frequency:
GND: Circuit Ground
Connect to V
capacitor for both V
External supply bypass capacitors are not necessary.
EL
Connects to lamps 1 and 2. Polarity is irrelevant.
Com1 and Com2: Lamp Connections
Connects to the other side of lamps 1 and 2. Polarity is
irrelevant.
DD
IN
inductor supply voltage:
1
input voltage:
and EL
●
Tel: 408-222-8888
DD
2
: Lamp Connections
and V
DD
and V
Com1
EL1
EL2
Com2
IN
negative terminals. Supply bypass
IN
are provided on the demoboard.
●
www.supertex.com
HV845DB1
3.3 - 4.2V
195Hz
98kHz
Value
13mA
2.3in
3.0V
2

HV845DB1 Summary of contents

Page 1

... Supertex inc. General Description The Supertex HV845DB1 demoboard contains all necessary circuitry to demonstrate the features of the HV845 dual EL lamp driver. Simply connect 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) ...

Page 2

... Figure1: HV845DB1 Circuit Schematic + 0.1µ OFF Typical Performance The specific external components used in the above circuit are: R The following performance was observed when driving EL V (V) V (V) Lamp DD IN 3.0 3 3.0 3 3.0 3.3 EL and EL 1 3.0 3 3.0 3 3.0 3.7 EL and ...