SP4423DS/14
SP4423Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
1
s
2.2V-5.0V Battery Operation
s
50nA Maximum Standby Current
s
High Voltage Output 160 V
PP
typical
s
Internal Oscillator
APPLICATIONS
s
PDAs
s
Cellular Phones
s
Remote Controls
s
Hand Held Computers
SP4423
Electroluminescent Lamp Driver
Low Power Applications
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 V
PP
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
SOIC packages. For delivery in die form, please consult
the factory.
Block Diagram
HON
V
DD
CAP 1
V
SS
COIL
EL2
EL1
SP4423
8
7
4
3
2
1
5
6
CAP 2
SP4423DS/14
SP4423 Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
2
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation sections
of the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability.
V
DD
............................................................................................................7.0V
Input Voltages/Currents
HON (pin1).........................................-0.5V to (V
DD
+0.5V)
COIL (pin3)..............................................................60mA
Lamp Outputs..............................................................................230V
PP
Storage Temperature....................................................-65C to +150C
Power Dissipation Per Package
8-pin NSOIC (derate 6.14mW
o
C above +70
o
C)..................500mW
8-pin
SOIC (derate 4.85mW
o
C above +70
o
C)...................390mW
The information furnished herein by Sipex has been carefully reviewed
for accuracy and reliability. Its application or use, however, is solely the
responsibility of the user. No responsibility for the use of this information
is assumed by Sipex, and this information shall not explicitly or implicitly
become part of the terms and conditions of any subsequent sales
agreement with Sipex. Specifications are subject to change without
prior notice. By the sale or transfer of this information, Sipex assumes
no responsibility for any infringement of patents or other rights of third
parties which may result from its use. No license or other proprietary
rights are granted by implication or otherwise under any patent or
patent rights of Sipex Corporation.
This data sheet specifies environmental parameters, final test conditions and limits as well suggested operating conditions.
For applications which require performance beyond the specified conditions and or limits please consult the factory.
COIL
V
SS
V
DD
EL 1
EL 2
CAP 1
CAP 2
HON
SP4423
537A
PAD
X
Y
EL1
556.5
179.0
EL2
556.2
-151.0
COIL
-19.5
-517.0
-568.0
-517.0
HON
-549.0
-256.5
CAP2
-549.0
93.5
CAP1
-568.0
-516.5
-349.0
517.0
NOTES:
1. Dimensions are in Microns unless otherwise noted.
2. Bonding pads are 125x125 typical
3. Outside dimensions are maximum, including scribe area.
4. Die thickness is 10 mils +/- 1.
5. Pad center coordinates are relative to die center.
6. Die size 1447 x 1346 ( 57 x 53 mils).
Bonding Diagram:
R
E
T
E
M
A
R
A
P
.
N
I
M
.
P
Y
T
.
X
A
M
S
T
I
N
U
S
N
O
I
T
I
D
N
O
C
V
,
e
g
a
t
l
o
V
y
l
p
p
u
S
D
D
2
.
2
0
.
3
0
.
6
V
,
t
n
e
r
r
u
C
y
l
p
p
u
S
I
L
I
O
C
I
+
D
D
5
2
1
2
1
0
4
A
m
V
D
D
V
,
V
0
.
3
=
N
O
H
V
0
.
3
=
V
D
D
V
,
V
0
.
6
=
N
O
H
V
0
.
6
=
V
,
e
g
a
t
l
o
V
li
o
C
L
I
O
C
V
D
D
0
.
6
V
V
,
e
g
a
t
l
o
V
t
u
p
n
I
N
O
H
N
O
H
f
f
o
L
E
:
W
O
L
n
o
L
E
:
H
G
I
H
5
2
.
0
-
V
D
D
5
2
.
0
-
0
V
D
D
V
5
2
.
0
V
D
D
5
2
.
0
+
V
n
o
L
E
,
t
n
e
r
r
u
C
N
O
H
5
2
0
5
0
6
0
2
1
A
V
N
O
H
V
=
D
D
V
0
.
3
=
V
N
O
H
V
=
D
D
V
0
.
6
=
I
,
t
n
e
r
r
u
C
n
w
o
d
t
u
h
S
D
S
I
=
L
I
O
C
I
+
D
D
0
1
3
.
0
0
0
2
1
A
n
A
V
D
D
V
,
V
0
.
3
=
N
O
H
V
0
=
V
D
D
V
,
V
0
.
6
=
N
O
H
V
0
=
E
V
I
R
D
R
O
T
C
U
D
N
I
f
,
y
c
n
e
u
q
e
r
F
li
o
C
L
I
O
C
f
=
P
M
A
L
2
3
x
6
.
9
z
H
k
e
l
c
y
C
y
t
u
D
li
o
C
5
7
%
I
,
t
n
e
r
r
u
C
li
o
C
k
a
e
P
L
I
O
C
-
K
P
0
6
A
m
.
n
g
i
s
e
d
y
b
d
e
e
t
n
a
r
a
u
G
T
U
P
T
U
O
P
M
A
L
L
E
f
,
y
c
n
e
u
q
e
r
F
p
m
a
L
L
E
P
M
A
L
0
0
2
5
2
2
0
0
3
0
0
3
0
0
4
0
5
4
z
H
V
D
D
V
0
.
3
=
V
D
D
V
0
.
6
=
e
g
a
t
l
o
V
t
u
p
t
u
O
k
a
e
P
o
t
k
a
e
P
0
1
1
0
5
1
V
P
P
SPECIFICATIONS
(T= 25
C; V
DD
= 3.0V; Lamp Capacitance = 6000pF; Coil = 20 mH (R
S
= 70
); C
OSC
= 150pF unless otherwise noted)
V
DD
V
SS
SP4423DS/14
SP4423Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
3
THEORY OF OPERATION
The SP4423 is made up of three basic circuit
elements, an oscillator, coil, and switched
H-bridge network. The oscillator provides the
device with an on-chip clock source used to
control the charge and discharge phases for the
coil and lamp. An external capacitor connected
between pins 7 and 8 allows the user to vary the
oscillator frequency from 32kHz to 400kHz.
The graphs on page 6 show the relationship
between C
OSC
and lamp output voltage.
In general, increasing the C
OSC
capacitor will
increase the lamp output voltage and decrease
the lamp frequency.
The suggested oscillator frequency is 64kHz
(C
OSC
=150pF). The oscillator output is internally
divided to create two internal control signals,
f
COIL
and f
LAMP
. The oscillator output is internally
divided down by 8 flip flops; a 64kHz signal
will be divided into 8 frequencies; 32, 16, 8, 4,
2, 1, 0.5, and 0.25 Hz. The 3rd flip flop output
(8kHz) is used to drive the coil (see Figure 2 on
page 9) and the 8th flip flop output (250Hz) is
used to drive the lamp. Although the oscillator
frequency can be varied to optimize the lamp
output, the ratio of f
COIL
/f
LAMP
will always
equal 32.
PIN DESCRIPTION
Pin 1 HON- Enable for driver operation,
high = active; low = inactive.
Pin 2 V
SS
- Power supply common, connect to
ground.
Pin 3 Coil- Coil input, connect coil from V
DD
to pin 3.
Pin 4 Lamp- Lamp driver output2, connect to
EL lamp.
Pin 5 Lamp- Lamp driver output1, connect to
EL lamp.
Pin 6 V
DD
- Power supply for driver, connect to
system V
DD
.
Pin 7 Cap1- Capacitor input 1, connect to C
OSC
.
Pin 8 Cap2- Capacitor input 2, connect to C
OSC
.
Q
Q
HON
SCR1
SCR2
OSC
FF1
FF2
EL Lamp
V
DD
Coil
4
5
EL2
EL1
7
8
Cap1
Cap2
2
V
SS
V
BATTERY
V
DD
6
3
20mH/70
1
C
OSC
= 150pF
0.1
F
f
COIL
f
LAMP
f
LAMP
SP4423 Schematic
1
2
3
4
8
7
6
5
SP4423
SP4423DS/14
SP4423 Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
4
The on-chip oscillator of the SP4423 can be
overdriven with an external clock source by
removing the C
OSC
capacitor and connecting a
clock source to pin 8 (Cap 2). The clock should
have a 50% duty cycle and range fromV
DD
-1V to
ground. An external clock signal may be
desirable in order to synchronize any parasitic
switching noise with the system clock. The
maximum external clock frequencies that can
be supplied is 400kHz.
The coil is an external component connected from
V
BATTERY
to pin 3 of the SP4423. Energy is stored
in the coil according to the equation E
L
=1/2LI
2
,
where I is the peak current flowing in the inductor.
The current in the inductor is time dependent
and is set by the "ON" time of the coil switch:
I=(V
L
/L)t
ON
, where V
L
is the voltage across the
inductor. At the moment the switch closes, the
current in the inductor is zero and the entire supply
voltage (minus the V
SAT
of the switch) is across the
inductor. The current in the inductor will then
ramp up at a linear rate. As the current in the
inductor builds up, the voltage across the inductor
will decrease due to the resistance of the coil and
the "ON" resistance of the switch: V
L
=V
BATTERY
-
IR
L
-V
SAT
. Since the voltage across the inductor is
decreasing, the current ramp-rate also decreases
which reduces the current in the coil at the end of
t
ON
the energy stored in the inductor per coil cycle
and therefore the light output. The other important
issue is that maximum current (saturation current)
in the coil is set by the design and manufacturer of
the coil. If the parameters of the application such
as V
BATTERY
, L, RL or t
ON
cause the current in the
coil to increase beyond its rated I
SAT
, excessive
heat will be generated and the power efficiency
will decrease with no additional light output. The
Sipex SP4423 is final tested using a 20mH/70
coil from CTC. For suggested coil sources see
page 10.
The supply V
DD
can range from 2.2 to 6.0V. It is not
necessary that Vdd = V
BATTERY
. V
BATTERY
should not
exceed max coil current specification. The majority
of the current goes through the coil and is typically
much greater than I
DD
.
The f
COIL
signal controls a switch that connects
the end of the coil at pin 3 to ground or to open
circuit. The f
COIL
signal is a 75% duty cycle
signal, switching at 1/8 the oscillator frequency.
For a 64kHz oscillator f
COIL
is 8kHz. During the
time when the f
COIL
signal is high, the coil is
connected from V
BATTERY
to ground and a charged
magnetic field is created in the coil. During the
low part of f
COIL
, the ground connection is
switched open, the field collapses and the
energy in the inductor is forced to flow toward
the high voltage H-bridge switches. f
COIL
will
send 16 of these charge pulses to the lamp, each
pulse increases the voltage drop across the lamp
in discrete steps. As the voltage potential
approaches its maximum, the steps become
shorter (see Figure 1 on page 9).
The H-bridge consists of two SCR structures
that act as high voltage switches. These two
switches control the polarity of how the lamp is
charged. The SCR switches are controlled by
the f
LAMP
signal which is the oscillator frequency
divided by 256. For a 64kHz oscillator,
f
LAMP
=250Hz.
When the energy from the coil is released, a high
voltage spike is created triggering the SCR
switches. The direction of current flow is
determined by which SCR is enabled. One full
cycle of the H-bridge will create 16 voltage
steps from ground to 80V (typical) on pins 4 and
5 which are 180 degrees out of phase with each
other (see Figure 3 on page 9). A differential
representation of the outputs is shown in Figure
4 on page 9. To minimize AC interference it is
advisable to use a decoupling filter capacitor
between V
DD
and ground.
Electroluminescent Technology
What is electroluminescence?
An EL lamp is basically a strip of plastic that is
coated with a phosphorous material which emits
light (fluoresces) when a high voltage (>40V)
which was first applied across it, is removed or
reversed. Long periods of DC voltages applied
to the material tend to breakdown the material
and reduce its lifetime. With these considerations
in mind, the ideal signal to drive an EL lamp is
a high voltage sine wave. Traditional approaches
to achieving this type of waveform included
discrete circuits incorporating a transformer,
transistors, and several resistors and capacitors.
This approach is large and bulky, and cannot be
implemented in most hand held equipment. Sipex
now offers low power single chip driver circuits
specifically designed to drive small to medium
sized electroluminescent panels. All that is
required is one external inductor and capacitor.
SP4423DS/14
SP4423Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
5
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.
Typical SP4423 Application Circuit
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).
0.1
F Low ESR
Decoupling
Capacitor
EL Lamp
NOTE:
Keep high voltage traces
short and away from V
DD
and clock lines
Cap2
Cap1
V
DD
EL1
HON
V
SS
Coil
EL2
HON=V
DD
=ON
HON=0V=OFF
SP4423
V
IN
=3V
9mH/35
NOTE:
Keep coil as close to the
SP4423 as possible
+
C
OSC
=100pF
Typical SP4423 Test Circuit
0.1
F Low ESR
Decoupling
Capacitor
NOTE:
Keep high voltage traces
short and away from V
DD
and clock lines
Cap2
Cap1
V
DD
EL1
HON
V
SS
Coil
EL2
HON=V
DD
=ON
HON=0V=OFF
SP4423
V
IN
=3V
20mH/70
NOTE:
Keep coil as close to the
SP4422A as possible
+
C
OSC
=150pF
100
6nF
SP4423DS/14
SP4423 Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
6
800
700
600
500
400
300
200
100
0
0
50
100
150
200
250
300
350
400
C
OSC
(pF)
Lamp Frequency vs. C
OSC
Lamp Frequenc
y (Hz)
X
X
X
X
X
Coil = 9/35
Coil = 5/18
Coil = 3/10
Coil = 1/14
Inductors
X
45
40
35
30
25
20
15
5
0
0
50
100
150
200
250
300
350
400
C
OSC
(pF)
I
TOTAL
vs. C
OSC
I
TOT
A
L
(mA)
X
Coil = 9/35
Coil = 5/18
Coil = 3/10
Coil = 1/14
Inductors
X
10
X
X
X
X
X
16
14
12
10
8
6
4
0
0
50
100
150
200
250
300
350
400
C
OSC
(pF)
Light vs. C
OSC
Light (FtL)
Coil = 9/35
Coil = 5/18
Coil = 3/10
Coil = 1/14
Inductors
X
2
X
X
X
X
X
X
250
200
150
100
50
0
0
50
100
150
200
250
300
350
400
C
OSC
(pF)
V
PEAK
vs. C
OSC
V
PEAK
(V)
X
Coil = 9/35
Coil = 5/18
Coil = 3/10
Coil = 1/14
Inductors
X
X
X
X
X
X
20.0
18.0
16.0
14.0
12.0
10.0
0.8
0.6
0.0
0
50
100
150
200
250
300
350
400
C
OSC
(pF)
Coil Frequency vs. C
OSC
Coil Frequenc
y (kHz)
X
X
X
X
X
Coil = 9/35
Coil = 5/18
Coil = 3/10
Coil = 1/14
Inductors
X
0.4
0.2
14
12
10
8
6
4
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
V
DD
(V)
I
TOTAL
vs. V
DD
over Temperature
I
TOT
A
L
(mA)
0
O
C
25
O
C
75
O
C
2
140
120
100
80
60
40
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
V
DD
(V)
V
PEAK
vs. V
DD
over Temperature
V
PEAK
(V)
0
O
C
25
O
C
75
O
C
20
160
300
250
200
150
100
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
V
DD
(V)
Lamp Frequency vs. V
DD
over Temperature
Lamp Frequenc
y (Hz)
0
O
C
25
O
C
75
O
C
50
350
Temperature (
o
C)
Temperature (
o
C)
Temperature (
o
C)
The following performance curves are intended to give the designer a relative scale from which to optimize
specific applications. Absolute measurements may vary depending upon the brand of components chosen.
Lamp = 1sq. in., V
DD
= 3.0V
Lamp = 1sq. in., V
DD
= 3.0V
Lamp = 1sq. in., V
DD
= 3.0V
Lamp = 1sq. in., V
DD
= 3.0V
Lamp = 1sq. in., V
DD
= 3.0V
Coil = 20mH/70 ohms, C
OSC
= 150pF
Coil = 20mH/70 ohms, C
OSC
= 150pF
Coil = 20mH/70 ohms, C
OSC
= 150pF
SP4423DS/14
SP4423Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
7
30
25
20
15
10
0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
Square Inches
I
TOTAL
vs. Lamp Size
I
TOT
A
L
(mA)
5
V
DD
= 2
V
DD
= 3
V
DD
= 4
V
DD
= 5
Supply (V)
V
DD
= 6
250
200
150
100
0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
Square Inches
Lamp Frequency vs. Lamp Size
Lamp Frequenc
y (Hz)
50
V
DD
= 2
V
DD
= 3
V
DD
= 4
V
DD
= 5
Supply (V)
V
DD
= 6
14
12
10
8
6
4
0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
Square Inches
Light vs. Lamp Size
Light (FtL)
2
V
DD
= 2
V
DD
= 3
V
DD
= 4
V
DD
= 5
Supply (V)
V
DD
= 6
160
140
120
100
80
60
40
0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
Square Inches
V
PEAK
vs. Lamp Size
V
PEAK
20
V
DD
= 2
V
DD
= 3
V
DD
= 4
V
DD
= 5
Supply (V)
V
DD
= 6
800
600
500
300
0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
Square Inches
Lamp Frequency vs. Lamp Size
100
C
OSC
= 50
C
OSC
= 75
C
OSC
= 100
C
OSC
= 180
Osc Cap
C
OSC
= 220
C
OSC
= 360
700
400
200
16
12
10
6
0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
Square Inches
I
TOTAL
vs. Lamp Size
2
C
OSC
= 50
C
OSC
= 75
C
OSC
= 100
C
OSC
= 180
Osc Cap
C
OSC
= 220
C
OSC
= 360
14
8
4
160
120
100
60
0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
Square Inches
V
PEAK
vs. Lamp Size
V
PEAK
20
C
OSC
= 50
C
OSC
= 75
C
OSC
= 100
C
OSC
= 180
Osc Cap
C
OSC
= 220
C
OSC
= 360
140
80
40
12
10
6
0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
Square Inches
Light vs. Lamp Size
Light (FtL)
2
C
OSC
= 50
C
OSC
= 75
C
OSC
= 100
C
OSC
= 180
Osc Cap
C
OSC
= 220
C
OSC
= 360
14
8
4
Lamp Frequenc
y (Hz)
I
TOT
A
L
(mA)
C
OSC
= 220pF, Coil = 9mH/35 ohms
C
OSC
= 220pF, Coil = 9mH/35 ohms
C
OSC
= 220pF, Coil = 9mH/35 ohms
C
OSC
= 220pF, Coil = 9mH/35 ohms
V
DD
= 3.0V, Coil = 9mH/35 ohms
V
DD
= 3.0V, Coil = 9mH/35 ohms
V
DD
= 3.0V, Coil = 9mH/35 ohms
V
DD
= 3.0V, Coil = 9mH/35 ohms
SP4423DS/14
SP4423 Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
8
Lamp = 1sq. in., Coil = 9mH/35 ohms
Lamp = 1sq. in., Coil = 9mH/35 ohms
Lamp = 1sq. in., Coil = 9mH/35 ohms
Lamp = 1sq. in., Coil = 9mH/35 ohms
10
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V
DD
(Volts)
Light vs. V
DD
Light (FtL)
C
OSC
= 50
C
OSC
= 75
C
OSC
= 100
C
OSC
= 180
Oscillator Cap
X
5
6.0
15
25
20
C
OSC
= 220
C
OSC
= 360
X
X
X
X
60
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V
DD
(Volts)
V
PEAK
vs. V
DD
V
PEAK
(V)
C
OSC
= 50
C
OSC
= 75
C
OSC
= 100
C
OSC
= 180
Oscillator Cap
X
40
6.0
80
100
120
160
140
C
OSC
= 220
C
OSC
= 360
X
X
X
X
X
20
15
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V
DD
(Volts)
I
TOTAL
vs. V
DD
I
TOT
A
L
(mA)
C
OSC
= 50
C
OSC
= 75
C
OSC
= 100
C
OSC
= 180
Oscilltor Cap
X
10
5
6.0
20
25
30
40
35
C
OSC
= 220
C
OSC
= 360
X
X
X
X
X
300
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Volts
Lamp Frequency vs. V
DD
Lamp Frequenc
y (Hz)
C
OSC
= 50
C
OSC
= 75
C
OSC
= 100
C
OSC
= 180
Oscillator Cap
X
200
100
6.0
400
500
600
800
900
700
C
OSC
= 220
C
OSC
= 360
X
X
X
X
X
SP4423DS/14
SP4423Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
9
16 coil pulses per half cycle; 74% duty cycle.
EL1 Output
-EL2 Output
V
PEAK
=80V (typical)
EL1 output; 16 charge steps per half cycle
EL1 Output
-EL2 Output
V
PP
=160V
(typical)
Differential Representation EL12.
Figure 1. EL output voltage in discrete steps at EL1 output
Figure 2. Voltage pulses released from the coil to the EL driver circuitry
Figure 3. EL voltage waveforms from the EL1 and EL2 outputs
Figure 4. EL differential output waveform of the EL1 and EL2 outputs
SP4423DS/14
SP4423 Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
10
2.5
6.5 Max
9.0 Max
25
2.0
(All dimensions in mm)
HITACHI METALS Ltd. Japan
Ph: 3-3284-4936
Fax: 3-3287-1945
HITACHI METALS Singapore
Ph: 65-222-3077
Fax: 65-222-5232
Part Numbers:
MD735L902B (9mH + 20% 41
)
MD735L502A (5mH + 20% 19.8
)
HITACHI METALS Hong Kong
Ph: 852-2724-4183
Fax: 852-2311-2093
HITACHI METALS Chicago, IL
Ph: 847-364-7200
Fax: 847-364-7279
Toko Inc. Japan
Ph: 03-3727-1161
Fax: 03-3727-1176
Toko America Inc. USA
Ph: 847-297-0070
Fax: 847-699-7864
Part Numbers:
667MA-472N (4.7mH, 13
)
Toko Inc. Singapore
Ph: 255-4000
Fax: 250-8134
Toko Germany
Ph: 49-7156-96-060
Fax: 49-7156-96-06-26
Toko U.K.
Ph: 1753-854057-9
Fax: 1753-8503-23
Toko Korea
Ph: 0551-50-5500
Fax: 0551-93-1110
Toko France
Ph: 01-4557-4465
Fax: 01-4554-2837
Toko Hong Kong
Ph: 2342-8131
Fax: 2341-9570
(All Dimensions in mm)
4.4 Max
2.75 Max
4.4
5.0
0.3
5.0
0.3
5.7
0.3
4.7
0.3
(All Dimensions in mm)
muRata USA
Ph: 770-436-1300
Fax: 770-436-3030
muRata Europe
Ph: 49-9116-6870
Fax: 49-1166-8722-5
muRata Taiwan
Ph: 88-6429-1415-1
Fax: 88-6442-5292-9
muRata Singapore
Ph: 65-758-4233
Fax: 65-753-6181
muRata Hong Kong
Ph: 85-2237-6389-8
Fax: 85-2237-5556-55
Part Numbers:
LQN6C472M04 (4.7mH, 35
)
LQN6C103M04 (10mH, 80
)
7.0
0.5
6.0
0.3
3.3
0.3
6.8
0.3
Coilcraft USA
Ph: 847-639-6400
Fax: 847-639-1469
Coilcraft Europe
Ph: 44-01236-730595
Fax: 44-01236-730627
Part Numbers:
DS1608C-106 (10mH, 32
)
Coilcraft Taiwan
Ph: 886-2-264-3646
Fax: 886-2-270-0294
Coilcraft Singapore
Ph: 65-296-6933
Fax: 465-296-4463 #382
Coilcraft Hong Kong
Ph: 852-770-9428
Fax: 852-770-0729
.175
4,45
.260
6,60 MAX
MAX
.115
2,92 MAX
Magnetically Shielded
(All Dimensions in mm)
(All Dimensions in mm)
The coil part numbers presented in this data sheet have been qualified as being suitable for the SP4422A product.
Contact Sipex for applications assistance in choosing coil values not listed in this data sheet.
CTC Coils LTD Hong Kong
Ph: 85-2695-4889
Fax: 85-2695-1842
Mark Technologies:
North American Stocking
distributor for Sankyo and CTC
Ph: 905-891-0165
Fax: 905-891-8534
Model Numbers: CH5070AS-203K-006 (20
m
H, 65
)
Sipex Number: S51208-M-1021-Sipex
SP4423DS/14
SP4423Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
11
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
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
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
SP4423DS/14
SP4423 Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
12
P
W
1
0.228/0.244
0.150/0.157
0.189/0.197
0.014/0.019
0.050 BSC
0.053/0.069
SP4423ACN
1
0.013
0.005
SP4423ACU
0.0256
BSC
0.118
0.004
0.020
2
0.020
0.116
0.004
0.034
0.004
0.040
0.003
0.004
0.002
0.118
0.004
0.118
0.004
0.037
Ref
0.0215
0.006
3.0
3
R .003
12.0
4
0.006
0.006
0.006
0.006
0.008
0 - 6
0.012
0.003
0.01
12.0
4
0.16
0.003
0.0965
0.003
0.116
0.004
Pkg.
Minimum qty per reel
Standard qty per reel
Maximum qty per reel
ACN
500
2500
3000
ACU
500
2500
3000
95 SP4423ACN per tube, no minimum quantity
50 SP4423ACU per tube
NSOIC-8 13" reels: P=8mm, W=12mm
SOIC-8 13" reels: P=8mm, W=12mm
All package dimensions in inches
8-pin NSOIC
8-pin
SOIC
SP4423DS/14
SP4423Electroluminescent Lamp Driver
Copyright 2000 Sipex Corporation
13
ORDERING INFORMATION
Model
Temperature Range
Package Type
SP4423CN . ............................................. 0C to +70C ........................................... 8-Pin NSOIC
SP4423CU . ............................................. 0C to +70C ........................................... 8-Pin
SOIC
SP4423CX ............................................... 0C to +70C .......................................................... Die
SP4423NEB ............................................................................................ NSOIC Evaluation Board
SP4423UEB ............................................................................................
SOIC Evaluation Board
Please consult the factory for pricing and availability on a Tape-On-Reel option.
Corporation
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the
application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others.
Sipex Corporation
Headquarters and
Sales Office
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
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