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PDF 4423CN Data sheet ( Hoja de datos )
| Número de pieza | 4423CN | |
| Descripción | SP4423CN | |
| Fabricantes | Sipex Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de 4423CN (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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® SP4423
Electroluminescent Lamp Driver
Low Power Applications
s 2.2V-5.0V Battery Operation
s 50nA Maximum Standby Current
s High Voltage Output 160 VPP typical
s Internal Oscillator
APPLICATIONS
s PDAs
s Cellular Phones
s Remote Controls
www.DataSheest4UH.caonmd Held Computers
DESCRIPTION
The SP4423 is a high voltage output DC-AC converter that can operate from a 2.2V-6.0V
power supply. The SP4423 is capable of supplying up to 200 VPP signals, making it ideal for
driving electroluminescent lamps. The device features 10nA (typical) standby current, for use
in low power portable products. An inductor is used to generate the high voltage, and an
external capacitor is used to select the oscillator frequency. The SP4423 is offered in
an 8-pin narrow SOIC and 8-pin µSOIC packages. For delivery in die form, please consult
the factory.
HON 1
VSS 2
COIL 3
EL2 4
SP4423
8 CAP 2
7 CAP 1
6 VDD
5 EL1
Block Diagram
SP4423DS/14
SP4423Electroluminescent Lamp Driver
1
© Copyright 2000 Sipex Corporation
1 page  
Electroluminescent backlighting is ideal when
used with LCD displays, keypads, or other backlit
readouts. Its main use is to illuminate displays in
dim to dark conditions for momentary periods
of time. EL lamps typically consume less than
LEDs or incandescent bulbs making them ideal
for battery powered products. Also, EL lamps
are able to evenly light an area without creating
"hot spots" in the display.
The amount of light emitted is a function of the
voltage applied to the lamp, the frequency at
which it is applied, the lamp material used and
its size. There are many variables which can be
optimized for specific applications. Sipex
supplies characterization charts to aid the
designer in selecting the optimum circuit
configuration (see page 6).
HON=VDD=ON
HON=0V=OFF
VIN=3V +
–
www.DataSheet4U.com
NOTE:
Keep coil as close to the
SP4423 as possible
Typical SP4423 Application Circuit
HON
VSS
Coil
COSC=100pF
Cap2
Cap1
VDD
0.1µF Low ESR
Decoupling
Capacitor
EL2 EL1
SP4423
EL Lamp
NOTE:
Keep high voltage traces
short and away from VDD
and clock lines
HON=VDD=ON
HON=0V=OFF
VIN=3V +
–
NOTE:
Keep coil as close to the
SP4422A as possible
HON
VSS
Coil
COSC=150pF
Cap2
Cap1
VDD
0.1µF Low ESR
Decoupling
Capacitor
EL2 EL1
100Ω
SP4423
6nF
NOTE:
Keep high voltage traces
short and away from VDD
and clock lines
Typical SP4423 Test Circuit
SP4423DS/14
SP4423Electroluminescent Lamp Driver
5
© Copyright 2000 Sipex Corporation
5 Page 
EL polarizers/transflector
manufacturers
Nitto Denko
San Jose, CA
Phone: (510) 445-5400
Astra Products
Baldwin, NJ
Phone: (516) 223-7500
Fax: (516) 868-2371
EL Lamp manufacturers
Metro Mark/Leading Edge
Minnetonka, MN
Phone: (800) 680-5556
Phone: (612) 912-1700
Midori Mark Ltd.
1-5 Komagata 2-Chome
Taita-Ku 111-0043 Japan
Phone: 81-03-3848-2011
Luminescent Systems Inc. (LSI)
Lebanon, NH
Phone: (603) 643-7766
Fax: (603) 643-5947
NEC Corporation
Tokyo, Japan
Phone: (03) 3798-9572
Fax: (03) 3798-6134
Seiko Precision
Tokyo, Japan
Phone: (03) 5610-7089
Fax: .) 5610-7177
Gunze Electronics
2113 Wells Branch Parkway
Austin, TX 78728
Phone: (512) 752-1299
Fax: (512) 252-1181
www.DataSheet4U.com
SP4423DS/14
SP4423Electroluminescent Lamp Driver
11
© Copyright 2000 Sipex Corporation
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet 4423CN.PDF ] | |
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