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产品型号ZSP4412ACN的Datasheet PDF文件预览

ZSP4412A  
Zywyn  
Electroluminescent Lamp Driver  
Super Low Standby Current  
General Description  
Features  
• +2.2V to +3.6V battery operation  
• 50nA maximum standby current (10nA typical)  
• High voltage output typical 160V  
• External oscillator required  
• Enable control pin  
The ZSP4412A is a high voltage output DC-AC converter  
that can operate from a +2.2V to +3.6V power supply. The  
ZSP4412A is designed with our proprietary high voltage  
BiCMOS technology and is capable of supplying up to  
PP  
250V signals, making it ideal for driving small electrolu-  
PP  
minescent 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 oscillator is needed as a clock source. The  
ZSP4412A is offered in an 8-pin narrow SOIC package or  
an 8-pin MSOP package. For delivery in die form, please  
consult the factory.  
Applications  
• Watches  
• Pagers  
• Backlit LCD displays  
OrderingInformation  
Part Number  
ZSP4412ACN  
ZSP4412ACU  
ZSP4412ALCU  
ZSP4412ACX  
ZSP4412ACW  
ZSP4412ANEB  
ZSP4412AUEB  
Temperature Range  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
n/a  
Package Type  
8-Pin nSOIC  
Pin Configuration  
8-Pin MSOP  
8-Pin MSOP Green  
Die in Wafflepack  
Die in Wafer Form  
nSOIC Eval. Board  
MSOP Eval. Board  
1
2
3
4
8
HON  
NC  
V
DD  
n/a  
7
6
5
Zywyn  
ZSP4412A  
EL2  
EL1  
Please contact the factory for pricing, availabiliy on Tape-and-Reel, and  
Green Package options.  
OSC Input  
V
COIL  
SS  
8-Pin nSOIC/MSOP  
Please contact the factory for EL driver design support and availability  
of custom-made evaluation demo boards.  
AN007  
See our web site for Application Note  
for custom-made evaluation demo boards.  
regarding requirements  
January2005  
Zywyn Corporation • Tel (408) 733-3225 • Fax (408) 733-3206 • Email sales@zywyn.com • www.zywyn.com  
specifications subject to change without notice  
rev. 03  
Zywyn Corporation  
ZSP4412A  
Storage Considerations  
Absolute Maximum Ratings  
Storage in a low humidity environment is preferred. Large  
high density plastic packages are moisture sensitive and  
should be stored in Dry Vapor Barrier Bags. Prior to  
usage, the parts should remain bagged and stored below  
40°C and 60%RH. If the parts are removed from the bag,  
they should be used within 48 hours or stored in an  
environment at or below 20%RH. If the above conditions  
cannot be followed, the parts should be baked for four  
hours at 125°C in order remove moisture prior to solder-  
ing. Zywyn ships product in Dry Vapor Barrier Bags with  
a humidity indicator card and desiccant pack. The humid-  
ity indicator should be below 30%RH.  
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 is  
not implied. Exposure to absolute maximum rating condi-  
tions for extended periods of time may affect reliability.  
V
.................................................................................................+5.0V  
DD  
Input Voltages/Currents  
HON (pin 1) ...................................0.5V to (V +0.5V)  
DD  
COIL (pin 5)......................................................... 60mA  
Lamp Output .......................................................... 250V  
PP  
Storage Temperature .............................. –65°C to +150°C  
Operating Temperature ............................... –0°C to +70°C  
The information furnished by Zywyn has been carefully  
reviewed for accuracy and reliability. Its application or  
use, however, is solely the responsibility of the user. No  
responsibility of the use of this information become part of  
the terms and conditions of any subsequent sales agree-  
ment with Zywyn. Specifications are subject to change  
without the responsibility for any infringement of patents  
or other rights of third parties which may result from its  
use. No license or proprietary rights are granted by  
implication or otherwise under any patent or patent rights  
of Zywyn Corporation.  
Power Dissipation Per Package  
8-pin nSOIC (derate 6.14mW/°C above +70°C) .. 500mW  
8-pin µSOIC (derate 4.85mW/°C above +70°C) .. 390mW  
Electrical Characteristics  
TA = +25°C, VDD = +3.0V, CLAMP = 2000pF, Coil = 30mH at 125; External Oscillator = 32,768Hz unless otherwise noted.  
Symbol  
VDD  
Parameter  
Condition  
Min  
Typ  
3.0  
5
Max  
3.6  
20  
Units  
V
Supply Voltage  
Supply Current  
Coil Voltage  
2.2  
ICOIL + IDD  
VCOIL  
VHON = VDD = +3.0V  
mA  
V
VDD  
3.6  
VHON  
HON Input Voltage  
LOW: EL off  
–0.25  
0
0.25  
V
HIGH: EL on  
VDD – 0.25 VDD  
VDD + 0.25  
IHON  
HON Current  
VHON = VDD = +3.0V  
VHON = 0V  
1
10  
10  
100  
50  
µA  
nA  
I
SD = ICOIL + IDD  
Shutdown Current  
INDUCTOR DRIVE  
fCOIL = fLAMP x 32  
Coil Frequency  
Coil Duty Cycle  
Peak Coil Current  
Input Oscillator = 32768Hz  
8192  
75  
Hz  
%
IPK-COIL  
Guaranteed by design  
60  
mA  
EL LAMP OUTPUT  
fLAMP  
EL Lamp Frequency  
Input Oscillator = 32768Hz  
256  
160  
Hz  
VPP  
Peak-to-Peak Output Voltage  
120  
VPP  
Zywyn  
2
January2005  
rev. 03  
Zywyn Corporation  
ZSP4412A  
Block Diagram  
VBATTERY  
VBATTERY  
0.1µF  
Low ESR  
decoupling  
capacitor  
30mH/125 Ω  
8
1
5
HON  
VD D  
Coil  
fCOIL  
HV1  
HV2  
Clock  
Divider  
Chain  
External  
Clock  
3
fLAMP  
Q
Q
FF1  
FF2  
fLAMP  
2
NC  
VSS  
EL2  
EL1  
6
4
7
EL Lamp  
Figure 1. ZSP4412A Block Diagram  
Pin Function  
Pin Description  
Pin Number  
Pin Name  
HON  
1
2
3
4
5
6
7
8
Enable for driver operation: high = active; low = inactive.  
No connect.  
NC  
OSC INPUT  
VSS  
Oscillator clock input.  
Power supply common: connect to ground.  
Coil input: connect coil from VDD to this pin.  
Lamp driver output 1: connect to EL lamp.  
Lamp driver output 2: connect to EL lamp.  
Positive supply.  
COIL  
EL1  
EL2  
VDD  
Bonding Diagram  
Die Photo  
1143  
Measured from center of Pads.  
(45)  
CLK  
PIN  
CLK  
HON  
VDD  
X
Y
218.5  
418.5  
418.5  
-178.0  
95.5  
555.5  
555.5  
339.5  
-555.5  
-555.5  
-555.5  
HON  
VDD  
Y
Vss  
EL2  
EL1  
COIL  
VSS  
(0,0)  
1397  
(55)  
X
-416.0  
-416.0  
219.0  
COIL  
NOTES:  
1. Dimensions are in microns unless otherwise noted (mils).  
2. Bonding pads are 125 x 125 microns typical.  
3. Outside dimensions are maximum including scribe area.  
4. Die thickness is 11 mils +/- 1.  
EL2  
EL1  
5. Pad center coordinates are relative to. the die center.  
6. Die substrate down-bonds to Vss (GND).  
7. Die mask number is MS131.  
8. Die size 1143 x 1397 (45 x 55 mils).  
Zywyn  
3
January2005  
rev. 03  
Zywyn Corporation  
ZSP4412A  
steps. As the voltage potential approaches its maximum,  
the steps become shorter (see Figure 3).  
Circuit Description  
The ZSP4412A is made up of three basic circuit elements,  
a divider chain, a coil, and a switched H-bridge network.  
The countdown chain provides the circuit with a clock  
source used to control the charge and discharge phases  
for the coil and lamp. An external oscillator is required and  
is delivered to pin 3 of the SO-8 package or to the “OSC  
IN” pad of the bare die. If a clock frequency other than  
32kHz is used, the output of the driver as well as the  
amount of current used, will be affected.  
The H-bridge consists of two proprietary low on-resis-  
tance high voltage switches. These two switches control  
the polarity of how the lamp is charged. The high voltage  
switches are controlled by the f  
signal which is the  
LAMP  
oscillator frequency divided by 128. For a 32kHz oscilla-  
tor, f = 250Hz.  
LAMP  
The direction of current flow is determined by which high  
voltage switch is enabled. One full cycle of the H-bridge  
will create 16 voltage steps from ground to 80V (typical)  
on pins 6 and 7 which are 180 degrees out of phase with  
each other (see Figure 5). A differential view of the  
outputs is shown in Figure 6.  
The suggested oscillator frequency is 32,768Hz. This  
clock frequency is internally divided to create two internal  
control signals, f  
and f  
. The output is internally  
COIL  
LAMP  
divided down by 7 flip-flops; therefore, a 32,768Hz signal  
will be divided into the following frequencies; 32, 16, 8, 4,  
2, 1, 0.5 and 0.25kHz. The second flip flop output (8kHz)  
is used to drive the coil (see Figure 4 ) and the seventh flip  
flop output (256Hz) is used to drive the lamp. Although the  
oscillator frequency can be varied to optimize the lamp  
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 trans-  
former, transistors, and several resistors and capacitors.  
This approach is large and bulky, and cannot be imple-  
mented in most hand held equipment. Zywyn now offers  
low power single chip driver circuits specifically designed  
to drive small to medium sized electroluminescent pan-  
els. All that is required is an external inductor and an  
external clock signal. 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 current than LEDs or incan-  
descent 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.  
output, the ratio of f  
/f  
will always equal 32.  
COIL LAMP  
The external clock should have a 50% duty cycle and  
range from V to ground. The maximum external clock  
DD  
frequency is 128kHz. The coil is an external component  
connected from V to pin 5 of the ZSP4412A. Energy  
BATT  
is stored in the coil according to the equation  
2
E = 1/2(LI ) where I , to the first approximation, is the  
L
P
P
product I = (t )((V  
– V )/L), where t  
is the time  
P
ON  
BATT  
CE  
ON  
it takes for the coil to reach its peak current, V  
is the  
CE  
voltage drop across the internal NPN switch transistor,  
and L is the inductance of the coil. When the NPN  
transistor switch is off, the energy is forced through an  
internal diode which drives the switched H-bridge net-  
work. This energy recovery is directly related to the  
brightness of the EL lamp output. There are many varia-  
tions among coils; magnetic material differences, winding  
differences and parasitic capacitances. The Zywyn  
ZSP4412A is final tested using a 30mH/125coil. For  
suggested coil sources see, “Coil Manufacturers.”  
The f  
signal controls a switch that connects the end of  
COIL  
the coil at pin 5 to ground or to open circuit. The f  
COIL  
signal is a 75% duty cycle square wave, switching at 1/4  
the oscillator frequency, (for a 32kHz oscillator f is  
COIL  
8kHz). During the time when the f  
signal is high, the  
COIL  
coil is connected from V  
to ground and a charged  
BATT  
magnetic field is created in the coil. During the low part of  
, the ground connection is switched open, the field  
f
COIL  
collapses, and the energy in the inductor is forced to flow  
toward the high voltage H-bridge switches. f will send  
COIL  
16 of these charge pulses to the lamp, each pulse in-  
creases the voltage drop across the lamp in discrete  
Zywyn  
4
January2005  
rev. 03  
Zywyn Corporation  
ZSP4412A  
Typical Application  
VDD  
HON  
8
7
6
5
1
2
0.1µF  
Low ESR  
decoupling  
capacitor  
Lamp  
Lamp  
3 VDC  
Clk  
VSS  
3
4
Coil  
Coil  
LAMP  
ZSP4412A  
30 mH 125 Coil  
32-64kHz  
Figure 2. Typical Application Circuit  
Contact factory for additional technical and application support  
Zywyn  
5
January2005  
rev. 03  
Zywyn Corporation  
ZSP4412A  
Waveforms  
VPEAK=80V (typical)  
EL1 output; 16 charge steps per half cycle  
Figure 3. EL Output Voltage in Discrete Steps at EL1 Output  
16 coil pulses per half cycle; 94% duty cycle.  
Figure 4. Voltage Pulses Released from the Coil to the EL Driver Circuitry  
EL1 Output  
- EL2 Output  
Figure 5. EL Voltage Waveforms from the EL1 and EL2 Outputs  
EL1 Output  
VPP=160V  
(typical)  
- EL2 Output  
Differential Representation E  
.
12  
Figure 6. EL Differential Output Waveform of the EL1 and EL2 Outputs  
Zywyn  
6
January2005  
rev. 03  
Zywyn Corporation  
ZSP4412A  
Murata Electronics Singapore  
200 Yishun Ave. 7, Singapore  
2776, Republic of Singapore  
Phone: 011 657584233  
Transflector Material  
Astra Products  
Mark Bogin  
P.O. Box 479  
Baldwin, NJ 11510  
Phone (516)-223-7500  
Coil Manufacturers  
Hitachi Metals  
Material Trading Division  
2101 S. Arlington Heights Road,  
Suite 116  
Arlington Heights, IL 60005-4142  
Phone: 1-800-777-8343 Ext. 12  
(847) 364-7200 Ext. 12  
Fax:  
011 657536181  
Fax  
(516)-868-2371  
Murata Hong Kong  
Room 709-712 Miramar Tower, 1  
Kimberly Road, Tsimshatsui,  
Kowloon, Hong Kong  
Fax:  
(847) 364-7279  
EL Lamp Manufacturers  
Leading Edge Ind. Inc.  
11578 Encore Circle  
Minnetonka, MN 55343  
Phone 1-800-845-6992  
Phone: 011-85223763898  
Hitachi Metals Ltd. Europe  
Immernannstrasse 14-16, 40210  
Dusseldorf, Germany  
Contact: Gary Loos  
Phone: 49-211-16009-0  
Fax:  
011-85223755655  
Panasonic.  
6550 Katella Ave  
Cypress, CA 90630-5102  
Phone: (714) 373-7366  
Fax:  
49-211-16009-29  
Midori Mark Ltd.  
1-5 Komagata 2-Chome  
Taita-Ku 111-0043 Japan  
Phone: 81-03-3848-2011  
Hitachi Metals Ltd.  
Kishimoto Bldg. 2-1, Marunouchi  
2-chome, Chiyoda-Ku, Tokyo,  
Japan  
Contact: Mr. Noboru Abe  
Phone: 3-3284-4936  
Fax:  
(714) 373-7323  
Sumida Electric Co., LTD.  
5999, New Wilke Road,  
Suite #110  
Rolling Meadows, IL,60008 U.S.A.  
Phone: (847) 956-0666  
NEC Corporation  
Yumi Saskai  
7-1, Shiba 5 Chome, Minato-ku,  
Tokyo 108-01, Japan  
Phone: (03) 3798-9572  
Fax:  
3-3287-1945  
Fax:  
(847) 956-0702  
Hitachi Metals Ltd. Singapore  
78 Shenton Way #12-01,  
Singapore 079120  
Contact: Mr. Stan Kaiko  
Phone: 222-8077  
Fax:  
(03) 3798-6134  
Sumida Electric Co., LTD.  
4-8, Kanamachi 2-Chrome,  
Katsushika-ku, Tokyo 125 Japan  
Phone: 03-3607-5111  
Seiko Precision  
Shuzo Abe  
1-1, Taihei 4-Chome,  
Sumida-ku, Tokyo, 139 Japan  
Phone: (03) 5610-7089  
Fax:  
222-5232  
Fax:  
03-3607-5144  
Hitachi Metals Ltd. Hong Kong  
Room 1107, 11/F., West Wing,  
Tsim Sha. Tsui Center 66  
Mody Road,Tsimshatsui East,  
Kowloon, Hong Kong  
Fax:  
(03) 5610-7177  
Sumida Electric Co., LTD.  
Block 15, 996, Bendemeer Road  
#04-05 to 06, Singapore 339944  
Republic of Singapore  
Gunze Electronics  
2113 Wells Branch Parkway  
Austin, TX 78728  
Phone: 2724-4188  
Phone: 2963388  
Fax:  
2311-2095  
Fax:  
2963390  
Phone: (512) 752-1299  
Fax:  
(512) 252-1181  
Murata  
2200 Lake Park Drive, Smyrna  
Georgia 30080 U.S.A.  
Phone: (770) 436-1300  
Sumida Electric Co., LTD.  
14 Floor, Eastern Center, 1065  
King’s Road, Quarry Bay,  
Hong Kong  
Fax:  
(770) 436-3030  
Phone: 28806688  
Fax:  
25659600  
Murata European  
Holbeinstrasse 21-23, 90441  
Numberg, Postfachanschrift 90015  
Phone: 011-4991166870  
Polarizers/Transflector  
Manufacturers  
Fax:  
011-49116687225  
Nitto Denko  
Yoshi Shinozuka  
Bayside Business Park 48500  
Fremont, CA. 94538  
Phone: 510 445 5400  
Murata Taiwan Electronics  
225 Chung-Chin Road, Taichung,  
Taiwan, R.O.C.  
Phone: 011 88642914151  
Fax:  
011 88644252929  
Fax:  
510 445-5480  
Top Polarizer- NPF F1205DU  
Bottom - NPF F4225  
or (F4205) P3 w/transflector  
Zywyn  
7
January2005  
rev. 03  
Zywyn Corporation  
ZSP4412A  
Package Information  
All package dimensions in inches  
8-pin MSOP  
8-pin nSOIC  
0.0256  
BSC  
12.0ß  
–4ß  
0.012  
–0.003  
0.008  
0ß - 6ß  
0.0965  
–0.003  
0.006  
–0.006  
R .003  
0.006  
–0.006  
0.118  
–0.002  
ZSP4412ACU  
0.16  
–0.003  
0.189/0.197  
3.0ß  
–3ß  
12.0ß  
001  
0.0215  
–0.006  
0.037  
Ref  
ZSP4412ACN  
–4ß  
0.150/0.157  
0.228/0.244  
0.020  
0.020  
0.053/0.069  
1
2
0.014/0.019  
0.050 BSC  
0.116  
–0.004  
0.034  
–0.002  
1
0.116  
–0.004  
0.040  
0.002  
0.013  
–0.005  
0.118  
–0.004  
0.004  
–0.002  
0.118  
–0.002  
95 ZSP4412ACN per tube  
50 ZSP4412ACU per tube  
P
W
nSOIC-8 13" reels: P=8mm, W=12mm  
MSOP-8 13" reels: P=8mm, W=12mm  
Pkg.  
Minimum qty per reel  
500  
Standard qty per reel Maximum qty per reel  
2500 3000  
ACN and ACU  
400 ZSP4412ACX die per wafflepack  
Waffle tray size = 1996 x 1996 mils  
Waffle pocket size cavity = 50 x 60 mils  
Waffle depth size cavity = 25 mils  
ZywynCorporation  
Headquarters and Sales Office  
1270 Oakmead Parkway, Suite 201 • Sunnyvale, CA 94085 • Tel: (408) 733-3225 • Fax: (408) 733-3206  
Email: sales@zywyn.com • www.zywyn.com  
ZywynCorporationreservestherighttomakechangestoanyproductsdescribedherein. Zywyndoesnotassumeanyliabilityarisingoutoftheapplicationor  
use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.  
© 2005 Zywyn Corporation  
Zywyn  
8
January2005  
rev. 03  
配单直通车
ZSP4412ACN产品参数
型号:ZSP4412ACN
生命周期:Transferred
包装说明:,
Reach Compliance Code:unknown
风险等级:5.75
Base Number Matches:1
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