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(R)
SP4422A Electroluminescent Lamp Driver
s 2.2V-5.0V Battery Operation s 50nA Typical Standby Current s High Voltage Output 160 VPP typical s Internal Oscillator APPLICATIONS s PDAs s Cellular Phones s Remote Controls s Handheld Computers
DESCRIPTION
The SP4422A is a high voltage output DC-AC converter that can operate from a 2.2V-5.0V power supply. The SP4422A is capable of supplying up to 220 VPP signals, making it ideal for driving electroluminescent lamps. The device features 50 nA (typical) standby current, for use in low power portable products. One external inductor is required to generate the high voltage, and one external capacitor is used to select the oscillator frequency. The SP4422A is offered in an 8-pin narrow and 8-pin micro SOIC packages. For delivery in die form, please consult the factory.
HON VSS COIL EL2
1 2 3 4 SP4422
8 7 6 5
CAP 2 CAP 1 VDD EL1
SP4422A Block Diagram
SP4422ADS/15 SP4422A Electroluminescent Lamp Driver (c) Copyright 2000 Sipex Corporation
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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. VDD............................................................................................................7.0V Input Voltages/Currents HON (pin1).........................................-0.5V to (VDD+0.5V) COIL (pin3)..............................................................60mA Lamp Outputs.............................................................................230VPP Storage Temperature.................................................-65C to +150C
Power Dissipation Per Package 8-pin NSOIC (derate 6.14mWoC above +70oC)...................500mW 8-pin SOIC (derate 4.85mWoC above +70oC)....................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.
SPECIFICATIONS
(T= 25C; VDD = 3.0V; Lamp Capacitance = 17nF with 100 Series resistor; Coil = 5mH (RS = 18); COSC = 100pF unless otherwise noted)
PARAMETER Supply Voltage, VDD Supply Current, ICOIL+IDD Coil Voltage, VCOIL HON Input Voltage, VHON LOW: EL off HIGH: EL on HON Current, EL on Shutdown Current, ISD=ICOIL+IDD INDUCTOR DRIVE Coil Frequency, fCOIL=fLAMPx32 Coil Duty Cycle Peak Coil Current, IPK-COIL EL LAMP OUTPUT EL Lamp Frequency, fLAMP
MIN. 2.2
TYP. 3.0 20 40
MAX. 5.0 30 60 5.0
UNITS V mA V
CONDITIONS
VDD=3.0V, VHON=3.0V VDD=5.0V, VHON=5.0V
VDD -0.25 VDD-0.25 0 VDD 25 50 0.3
0.25V VDD+0.25 60 500
V A nA A
VDD11.2 94 60
kHz % mA Guaranteed by design.
250 200 60 70 110 180
352
450 600
Hz
TAMB=+25OC, VDD=3.0V TAMB=-40OC to +85OC, VDD=3.0V TAMB=+25OC, VDD=2.2V TAMB=-40OC to +85OC, VDD=3.0V TAMB=+25OC, VDD=3.0V TAMB=+25OC, VDD=5.0V
80 140 200 VPP
Peak to Peak Output Voltage
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.
Bonding Diagram:
VDD CAP 1
PAD EL1 EL2 COIL VSS
X 556.5 556.2 -19.5 -568.0 -549.0 -549.0 -568.0 -349.0
Y 179.0 -151.0 -517.0 -517.0 -256.5 93.5 -516.5 517.0
EL 1 CAP 2 EL 2
HON
HON CAP2 CAP1 VDD
SP4422A
VSS
SP4422ADS/15
COIL
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 10mils +/- 1. 5. Pad center coordinates are relative to die center. 6. Die size 1447 x 1346 ( 57 x 53 mils).
SP4422A Electroluminescent Lamp Driver (c) Copyright 2000 Sipex Corporation
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PIN DESCRIPTION
THEORY OF OPERATION The SP4422A 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 COSC and lamp output voltage. In general, increasing the COSC capacitor will increase the lamp output. The suggested oscillator frequency is 90kHz (COSC=100pF). 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 90kHz signal will be divided into 8 frequencies; 45kHz, 22.5kHz, 11.2kHz, 5.6kHz, 2.8kHz, 1.4kHz, 703Hz, and 352Hz. The third flip flop output (8kHz) is used to drive the coil (see figure 2 on page 9) and the eighth 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. The on-chip oscillator of the SP4422A can be overdriven with an external clock source by removing the COSC capacitor and connecting a
VBATTERY
SP4422ACN
1 2 3 4
8 7 6 5
Pin 1 - HON- Enable for driver operation, high = active; low = inactive. Pin 2 - VSS- Power supply common, connect to ground. Pin 3 - Coil- Coil input, connect coil from VDD 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 - VDD- Power supply for driver, connect to system VDD. Pin 7 - Cap1- Capacitor input 1, connect to COSC. Pin 8 - Cap2- Capacitor input 2, connect to COSC.
VDD
0.1F 6 VDD 1 HON 3 Coil
5mH/18
COSC = 100pF
7
OSC Cap1 Cap2 fCOIL
SCR1 SCR2
8
Q
fLAMP FF1 FF2
Q
fLAMP VSS 2 EL2 4 EL1 5
EL Lamp
SP4422A Schematic
SP4422ADS/15 SP4422A Electroluminescent Lamp Driver (c) Copyright 2000 Sipex Corporation
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clock source to pin 8. The clock should have a 50% duty cycle and range fromVDD-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 frequency that can be supplied is 400kHz. The coil is an external component connected from VBATTERY to pin 3 of the SP4422A. Energy is stored in the coil according to the equation EL=1/2LI2, 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=(VL/ L)tON, where VL 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 VSAT 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: VL=VBATTERY-IRL-VSAT. 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 tON 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 VBATTERY, L, RL or ton cause the current in the coil to increase beyond its rated ISAT, excessive heat will be generated and the power efficiency will decrease with no additional light output. The Sipex SP4422A is final tested using a 5mH/18 coil from Hitachi Metals. For suggested coil sources see page 10.
The supply VDD can range from 2.2 to 5.0V. It is not necessary that VDD = VBATTERY. VBATTERY should not exceed max coil current specification. The majority of the current goes through the coil and is typically much greater than IDD. The fCOIL signal controls a switch that connects the end of the coil at pin 3 to ground or to open circuit. The fCOIL signal is a 94% duty cycle signal switching at 1/8 the oscillator frequency. For a 64kHz oscillator fCOIL is 8kHz. During the time when the fCOIL signal is high, the coil is connected from VBATTERY to ground and a charged magnetic field is created in the coil. During the low part of fCOIL , 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. fCOIL will send 16 of these charge pulses (see figure 2 on page 9) 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 smaller (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 fLAMP signal which is the oscillator frequency divided by 256. For a 64kHz oscillator, fLAMP=256Hz.
9mH/35
HON=VDD=ON HON=0V=OFF VIN=3V
COSC =100pF HON VSS Coil EL2 Cap2 Cap1 VDD EL1 SP4422A EL Lamp 0.1F Low ESR Decoupling Capacitor
+ -
NOTE: Keep coil as close to the SP4422A as possible
NOTE: Keep high voltage traces short and away from VDD and clock lines
Typical SP4422A Application Circuit
SP4422ADS/15 SP4422A Electroluminescent Lamp Driver (c) Copyright 2000 Sipex Corporation
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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 from each other (see figure 3 on page 9. A differential representation of the outputs is shown in figure 4 on page 9. Layout Considerations The SP4422A circuit board layout must observe careful analog precautions. For applications with noisy voltage power supplies a 0.1F low ESR decoupling capacitor must be connected from VDD to ground. Any high voltage traces should be isolated from any digital clock traces or enable lines. A solid ground plane connection is strongly recommended. All traces to the coil or to the high voltage outputs should be kept as short as possible to minimize capacitive coupling to digital clock lines and to reduce EMI emissions. 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. 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 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, and lastly, the inductor used. 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).
5mH/18
HON=VDD=ON HON=0V=OFF VIN=3V
COSC=100pF HON VSS Coil EL2 Cap2 Cap1 VDD EL1 SP4422A 100 17nF 0.1F Low ESR Decoupling Capacitor
+ -
NOTE: Keep coil as close to the SP4422A as possible
NOTE: Keep high voltage traces short and away from VDD and clock lines
SP4422A Test Circuit
SP4422ADS/15
SP4422A Electroluminescent Lamp Driver
(c) Copyright 2000 Sipex Corporation
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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 Frequency (Hz)
Frequency (kHz)
800 700 600 500 400 300 200 100 0 50 75 100 180 COSC (pF) 220 360
200 175 150 125 100 75 50 25 0 50 75 100 180 COSC (pF) 220 360
Lamp Frequency vs COSC VDD= 3.0V; Coil= 9mH, 35; Lamp=1 sq. in.
25 20
Oscillator Frequency vs COSC VDD= 3.0V; Coil= 9mH, 35; Lamp=1 sq. in.
11.4 11.2
Itotal (mA) TOTAL
15 10 5 0 50 75 100 180 COSC (pF) 220 360
Itotal (mA) TOTAL
11 10.8 10.6 10.4 1 2 3 4 Lamp SIze (sq.in.) 5 6
ITOTAL vs COSC VDD= 3.0V; Coil= 9mH, 35; Lamp=1 sq. in.
300
ITOTAL vs Lamp Size VDD= 3.0V; Coil= 9mH, 35; COSC = 180pF
250 200
Output (E PP)
Output (E PP)
250 200 150 100 50 0 50 75 100 180 COSC (pF) 220 360
150 100 50 0 1 2 3 4 5 6 Lamp Size (sq.in.)
Output Voltage vs COSC VDD= 3.0V; Coil= 9mH, 35; Lamp=1 sq. in.
12 10
Output Voltage vs Lamp Size. VDD= 3.0V; Coil= 9mH, 35; COSC= 180pF
7 6
Luminance (FtL)
50 75 100 180 COSC (pF) 220
Luminance (FtL)
8 6 4 2 0 360
5 4 3 2 1 0 1 2 3 4 Lamp Size (sq.in.) 5 6
Luminance vs COSC VDD= 3.0V; Coil= 9mH, 35; Lamp=1 sq. in.
Luminance vs Lamp Size. VDD= 3.0V; Coil= 9mH, 35; COSC= 180pF
SP4422ADS/15
SP4422A Electroluminescent Lamp Driver
(c) Copyright 2000 Sipex Corporation
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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 Lamp Frequency (Hz) Light Output (Cd/m2) 47 68 250 200 C OSC (pf) 390 600 400 200 0 100 300
20 15 10 5 0 2.2 4 3 Supply Voltage (Volts) 5
Lamp Frequency vs. COSC VDD= 3.0V; Coil= 5mH, 18; Load=10nF
40 30 20 10 0 47
Luminance vs. VDD=Vcoil VDD=3.0V; Coil=5mH, 18; Load=10nF
25.5 25
I Total (mA)
I Total (mA) 68 100 250 200 C OSC (pf) 390
24.5 24 23.5 23 22.5
300
1
2
4 3 Lamp Size (sq. in.)
5
6
ITOTAL vs. Cosc VDD= 3.0V; Coil= 5mH, 18; Load=10nF
250 200 Output (VPP) 150 100 50 0 47 68 100 250 200 C OSC (pf) 300 390
ITOTAL vs. Lamp Size VDD= 3.0V; Coil= 5mH, 18; COSC=100pF
250 200 Output (VPP) 150 100 50 0 1 2 4 3 Lamp Size (sq. in.) 5 6
Output Voltage vs. COSC VDD= 3.0V; Coil= 5mH, 18; Load=10nF
50 Luminance (cdls)
Output Voltage vs. Lamp Size. VDD= 3.0V; Coil= 5mH, 18; COSC=100pF
35 Luminance (cdls) 30 25 20 15 10 5 0 1 2 4 3 Lamp Size (sq. in.) 5 6
40 30 20 10 0 33 56 82 200 150 C OSC (pf) 250 300 390
Luminance vs. COSC VDD= 3.0V; Coil= 5mH, 18; Load=10nF
Luminance vs. Lamp Size. VDD= 3.0V; Coil= 5mH, 18; COSC=100pF
SP4422ADS/15
SP4422A Electroluminescent Lamp Driver
(c) Copyright 2000 Sipex Corporation
7
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.
200 150 100 50 0 -40 0 25 70 Temperature ( O C) 85
600
Lamp Frequency (Hz)
500 400 300 200 100 0 -40 0 25 70 Temperature ( O C) 85
Peak to Peak Voltage (Volts)
Peak to Peak Voltage vs. Temperature VDD=3.0V; Coil=5mH/18; COSC=100pF; Load=10nF
200 150 100 50 0 -40 0 25 70 Temperature ( O C) 85
Lamp Frequency vs. Temperature VDD=3.0V; Coil=5mH/18; COSC=100pF; Load=10nF
500
Lamp Frequency (Hz)
Peak to Peak Voltage (Volts)
400 300 200 100 0 -40 0 25 70 Temperature ( O C) 85
Peak to Peak Voltage vs. Temperature VDD=2.2V; Coil=5mH/18; COSC=100pF; Load=10nF
25 20
Lamp Frequency vs. Temperature VDD=2.2V; Coil=5mH/18; COSC=100pF; Load=10nF
6 5
Total Supply Current (MA)
Light Output (cd/m2)
0 25 70 Temperature ( O C) 85
15 10 5 0 -40
4 3 2 1 0 0 70 25 Temperature ( O C) 85
Total Supply Current vs. Temperature VDD=3.0V; Coil=5mH/18; COSC=100pF; Load=10nF
Light Output vs. Temperature VDD=3.0V; Coil=5mH/18; COSC=100pF; Lamp=6sq.in.
SP4422ADS/15
SP4422A Electroluminescent Lamp Driver
(c) Copyright 2000 Sipex Corporation
8
VPEAK=80V (typical)
EL1 output; 16 charge steps per half cycle
Figure 1. EL output voltage in discrete steps at EL1 output
16 coil pulses per half cycle; 94% duty cycle.
Figure 2. Voltage pulses released from the coil to the EL driver circuitry
EL1 Output
-EL2 Output
Figure 3. EL voltage waveforms from the EL1 and EL2 outputs
EL1 Output VPP=160V (typical) -EL2 Output Differential Representation (EL1-EL2)
Figure 4. EL differential output waveform of the EL1 and EL2 outputs
SP4422ADS/15
SP4422A Electroluminescent Lamp Driver
(c) Copyright 2000 Sipex Corporation
9
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 (20mH, 65) Sipex Number: S51208-M-1021-Sipex
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) Toko Inc. Japan Ph: 03-3727-1161 Fax: 03-3727-1176 Toko America Inc. USA Ph: 847-297-0070 Fax: 847-699-7864 Toko Inc. Singapore Ph: 255-4000 Fax: 250-8134 Toko Germany Ph: 49-7156-96-060 Fax: 49-7156-96-06-26 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 muRata Hong Kong Ph: 85-2237-6389-8 Fax: 85-2237-5556-55 Part Numbers: LQN6C472M04 (4.7mH, 35) LQN6C103M04 (10mH, 80) Coilcraft Hong Kong Ph: 852-770-9428 Fax: 852-770-0729
.175 MAX 4,45
25 2.0
2.5
6.5 Max
9.0 Max
(All dimensions in mm)
HITACHI METALS Hong Kong Ph: 852-2724-4183 Fax: 852-2311-2093 HITACHI METALS Chicago, IL Ph: 847-364-7200 Fax: 847-364-7279
6.8 0.3
7.0 0.5
3.3 0.3
6.0 0.3
(All Dimensions in mm)
4.4 Max
2.75 Max 4.4 (All Dimensions in mm)
Part Numbers: Toko U.K. 667MA-472N (4.7mH, 13) Ph: 1753-854057-9 Fax: 1753-8503-23 muRata USA Ph: 770-436-1300 Fax: 770-436-3030 muRata Europe Ph: 49-9116-6870 Fax: 49-1166-8722-5 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) muRata Taiwan Ph: 88-6429-1415-1 Fax: 88-6442-5292-9 muRata Singapore Ph: 65-758-4233 Fax: 65-753-6181 Coilcraft Taiwan Ph: 886-2-264-3646 Fax: 886-2-270-0294 Coilcraft Singapore Ph: 65-296-6933 Fax: 465-296-4463 #382
5.0 0.3
5.0 0.3
5.7 0.3
(All Dimensions in mm)
.260 6,60 MAX
4.7 0.3
.115 2,92 MAX Magnetically Shielded
(All Dimensions in mm)
SP4422ADS/15
SP4422A Electroluminescent Lamp Driver
(c) Copyright 2000 Sipex Corporation
10
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
SP4422ADS/15
SP4422A Electroluminescent Lamp Driver
(c) Copyright 2000 Sipex Corporation
11
All package dimensions in inches 8-pin NSOIC
0.0256 BSC 0.012 0.003 0.189/0.197 0.0965 0.003 0.053/0.069 R .003
8-pin SOIC
12.0 4 0.008 0 - 6 0.006 0.006 0.006 0.006
0.150/0.157
SP4422ACN
0.228/0.244
SP4422ACU
0.118 0.004
0.16 0.003 12.0 4 0.01
0.014/0.019 0.050 BSC
1
0.020 0.020 1 2
0.0215 0.006 0.037 Ref
3.0 3
0.116 0.004
0.034 0.004 0.040 0.003 0.116 0.004
0.013 0.005 0.118 0.004
0.004 0.002
0.118 0.004
95 SP4422ACN per tube, no minimum quantity
50 SP4422ACU per tube
P
W
NSOIC-8 13" reels: P=8mm, W=12mm SOIC-8 13" reels: P=8mm, W=12mm Pkg. ACN ACU Minimum qty per reel 500 500 Standard qty per reel 2500 2500 Maximum qty per reel 3000 3000
SP4422ADS/15
SP4422A Electroluminescent Lamp Driver
(c) Copyright 2000 Sipex Corporation
12
ORDERING INFORMATION
Model Operating Temperature Range Package Type SP4422ACN . .......................................... -40C to +85C ......................................... 8-Pin NSOIC SP4422ACU . .......................................... -40C to +85C ......................................... 8-Pin SOIC SP4422ACX ............................................ -40C to +85C ........................................................ Die SP4422ANEB .................................................. N/A ........................................... Evaluation Board SP4422AUEB .................................................. N/A ........................................... Evaluation Board
Please consult the factory for pricing and availability on a Tape-On-Reel option.
Corporation
SIGNAL PROCESSING EXCELLENCE
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
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.
SP4422ADS/15
SP4422A Electroluminescent Lamp Driver
(c) Copyright 2000 Sipex Corporation
13

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