HV857LDB1 Supertex, HV857LDB1 Datasheet

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HV857LDB1

Manufacturer Part Number
HV857LDB1
Description
Manufacturer
Supertex
Datasheet
1.HV857LDB1.pdf (2 pages)

Specifications of HV857LDB1

Lead Free Status / RoHS Status
Not Compliant
General Description
The Supertex HV857LDB1 demo board contains all
necessary circuitry to demonstrate the features of the
HV857L 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).
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 HV857L EL driver IC. The supplied circuit is
optimized for 3.0V operation. The operating range can be
from 1.8V to 5.0V. Connect to positive terminal of a power
supply.
Note:
Make sure all the above connections are made before powering up the supply voltages.
DD
DD
IC Supply
) enables the driver and a logic low, (connect to
GND
EN
V
IN
R
R
V
SW
EL
DD
C
C
L
IN
X
DD
HV857L
HV857L
EL Lamp Driver IC Demoboard
V
Low Noise, High Voltage
A
C
S
D
V
B
1
Specifi cations
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
Actual Dimensions: 12mm x 12mm
Lamp Connections
DD
and V
DD
IN
and V
negative terminals. Supply bypass
IN
are provided on the demo
HV857LDB1
1.8V to 5.0V
204Hz
70kHz
27mA
3.0in
2

HV857LDB1 Summary of contents

Page 1

... EL Lamp Driver IC Demoboard General Description The Supertex HV857LDB1 demo board contains all necessary circuitry to demonstrate the features of the HV857L 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) ...

Page 2

... (V) (mA) 1.8 27.06 2.0 26.95 3.0 27.01 4.0 21.94 5.0 17.55 HV857LDB1 Bill of Materials Component Description L 220µH Inductor X C 3.3nF, 100V, NPO chip capacitor S R 5%, 560kΩ resistor SW R 5%, 2MΩ resistor EL C 4.7µF, 10V ceramic chip capacitor IN C 0.1µ ...