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4423CN の電気的特性と機能

4423CNのメーカーはSipex Corporationです、この部品の機能は「 SP4423CN」です。


製品の詳細 ( Datasheet PDF )

部品番号 4423CN
部品説明 SP4423CN
メーカ Sipex Corporation
ロゴ Sipex Corporation ロゴ 




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4423CN Datasheet, 4423CN PDF,ピン配置, 機能
® 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





4423CN pdf, ピン配列
PIN DESCRIPTION
1
2
3
4
8
7
6
5
Pin 1 – HON- Enable for driver operation,
high = active; low = inactive.
Pin 2 – V - Power supply common, connect to
SS
ground.
Pin 3 – Coil- Coil input, connect coil from V
www.DataSheetto4Up.icnom3.
DD
Pin 4 – Lamp- Lamp driver output2, connect to
EL lamp.
Pin 5 – Lamp- Lamp driver output1, connect to
EL lamp.
Pin 6 – VDD- Power supply for driver, connect to
system VDD.
Pin 7 – Cap1- Capacitor input 1, connect to C .
OSC
Pin 8 – Cap2- Capacitor input 2, connect to COSC.
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 and lamp output voltage.
OSC
In general, increasing the COSC capacitor will
increase the lamp output voltage and decrease
the lamp frequency.
The suggested oscillator frequency is 64kHz
(COSC=150pF). The oscillator output is internally
divided to create two internal control signals,
fCOIL and fLAMP. 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 fCOIL/fLAMP will always
equal 32.
0.1µF
VDD
6
VDD
1
HON
VBATTERY
20mH/70
3
Coil
OSC
7
Cap1
Cap2
8
FF1
Q
FF2
Q
VSS
2
fCOIL
fLAMP
fLAMP
SCR1
SCR2
EL2 EL1
45
EL Lamp
SP4423 Schematic
SP4423DS/14
SP4423Electroluminescent Lamp Driver
3
© Copyright 2000 Sipex Corporation


3Pages


4423CN 電子部品, 半導体
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.
800
700
600
500
400
300
200
100
0
0
Lamp Frequency vs. COSC
X
X
50 100
X
X
150 200 250
C (pF)
OSC
X
300 350
Inductors
Coil = 9/35
Coil = 5/18
Coil = 3/10
X Coil = 1/14
400
Lamp = 1sq. in., VDD = 3.0V
20.0
18.0
16.0
14.0
12.0
10.0
0.8
0.6
0.4
0.2
0.0
0
Coil Frequency vs. COSC
X
X
50 100
X
X
150 200 250
C (pF)
OSC
X
300 350
Inductors
Coil = 9/35
Coil = 5/18
Coil = 3/10
X Coil = 1/14
400
Lamp = 1sq. in., VDD = 3.0V
45 ITOTAL vs. COSC
40
XX
X
35 X
www.DataSheet432U05 .comX X
20
Inductors
15 Coil = 9/35
Coil = 5/18
10 Coil = 3/10
5 X Coil = 1/14
0
0 50 100 150 200 250 300 350 400
C (pF)
OSC
Lamp = 1sq. in., VDD = 3.0V
14
12
10
8
6
4
2
0
2.0
ITOTAL vs. VDD over Temperature
2.5 3.0
3.5 4.0 4.5
V (V)
DD
5.0 5.5
Temperature (oC)
0OC
25OC
75OC
6.0
Coil = 20mH/70 ohms, COSC = 150pF
250
200
150
100
50
0
0
VPEAK vs. COSC
X XX
50 100
XX
150 200 250
C (pF)
OSC
300
X Inductors
Coil = 9/35
Coil = 5/18
Coil = 3/10
X Coil = 1/14
350 400
Lamp = 1sq. in., VDD = 3.0V
160
140
120
100
80
60
40
20
0
2.0
VPEAK vs. VDD over Temperature
2.5 3.0
3.5 4.0 4.5
V (V)
DD
5.0 5.5
Temperature (oC)
0OC
25OC
75OC
6.0
Coil = 20mH/70 ohms, COSC = 150pF
16
14
12
10
8
6
4
2
0
0
Light vs. COSC
X
X
X
X
X
Inductors
Coil = 9/35
Coil = 5/18
Coil = 3/10
X X Coil = 1/14
50 100 150 200 250 300 350 400
C (pF)
OSC
Lamp = 1sq. in., VDD = 3.0V
Lamp Frequency vs. VDD over Temperature
350
300
250
200
150 Temperature (oC)
100 0OC
50 25OC
0 75OC
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
V (V)
DD
Coil = 20mH/70 ohms, COSC = 150pF
SP4423DS/14
SP4423 Electroluminescent Lamp Driver
6
© Copyright 2000 Sipex Corporation

6 Page



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部品番号部品説明メーカ
4423CN

SP4423CN

Sipex Corporation
Sipex Corporation


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