SP4425 Sipex, SP4425 Datasheet
SP4425
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SP4425 Summary of contents
Page 1
... Digital Watches Backlit LCD Displays DESCRIPTION The SP4425 is a high voltage output DC-AC converter that can operate from a single 1.5 VDC power supply. The SP4425 is capable of supplying up to 220 V driving electroluminescent lamps. The device features 1 A (typical) standby current for use in low power portable products. One external inductor is required to generate the high voltage charge and one external capacitor is used to select the oscillator and lamp frequencies ...
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... SP4425 Electroluminescent Lamp Driver 2 = 180pF unless otherwise noted); C OSC ...
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... Dimensions are in Microns unless otherwise noted. 2. Bonding pads are 125x125 typical. 3. Outside dimensions are maximum, including scribe area. Coil 4. Die thickness is 10 mils +/- 1. 5. Pad center coordinates are relative to die center. 6. Die size mils. SP4425 Electroluminescent Lamp Driver 3 = 180pF 470pF unless otherwise noted) OSC INT C ...
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... Cap1 180pF FF1 SP4425 Schematic SP4425DS/20 THEORY OF OPERATION The SP4425 is made up of three basic circuit elements, an oscillator, coil, and switched H-bridge network. The oscillator provides the device with 8 an on-chip clock source used to control the charge 7 and discharge phases for the coil and lamp. An ...
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... Coils are also a DD BATTERY function of the core material and winding used -- performance variances may be noticeable from different coil suppliers. The Sipex SP4425 is final tested at 1.5V using a 470 H/4 coil from Toko, and a 2mH/44 coil from Matsushita at 3V. For suggested coil sources see page 12. ...
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... 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 7 and 8). SP4425 Electroluminescent Lamp Driver 6 with a frequency the same application with a ...
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... HON OSC Coil EL1 D1 EL2 SP4425 NOTE: Keep high voltage traces short and away from V and clock lines SP4425 Electroluminescent Lamp Driver 7 HON=V =ON DD HON=0V=OFF 0.1 F Low ESR Decoupling Capacitor EL Lamp 5Ftl 1.5 sq.in. 4nF NOTE: Keep high voltage traces short and away from V ...
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... Lamp = 1.5 sq 180pF D1N4148 1.2 1 1.1 Lamp = 1.5 sq 180pF D1N4148 SP4425DS/20 V Peak LAMP 1.2 1.25 1.3 1.35 1.4 V (Volts TOTAL 1.3 1.4 V (Volts) DD SP4425 Electroluminescent Lamp Driver 8 Inductors H/DCR A 470/4 B 470/11 C 470/4 1.45 1.5 D 470/2.3 E 470/3.4 Inductors H/DCR A 470/4 B 470/11 C 470/4 1.5 D 470/2.3 E 470/3.4 © Copyright 2000 Sipex Corporation ...
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... V DD Lamp = 1.5 sq 180pF D1N4148 SP4425DS/20 1.3 1.4 1.5 (Volts) DD 1.3 1.4 1.5 (Volts) SP4425 Electroluminescent Lamp Driver 9 Inductors H/DCR A 470/4 B 470/11 C 470/4 D 470/2.3 E 470/3.4 Inductors H/DCR A 470/4 B 470/11 C 470/4 D 470/2.3 E 470/3.4 © 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. SP4425 Total Supply Current vs. Temperature - Temperature ( C) O Coil=470 H =180pF; ...
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... Figure 3. EL voltage waveforms from the EL1 and EL2 outputs Differential representation (EL1-EL2) Figure 4. El differential output waveform of the EL1 and EL2 outputs SP4425DS/20 V =80V (typical) PEAK EL1 Output -EL2 Output SP4425 Electroluminescent Lamp Driver 11 EL1 Output -EL2 Output V = 160V PP (typical) © Copyright 2000 Sipex Corporation ...
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... The coil part numbers presented in this data sheet have been qualified as being suitable for the SP4425 product. Contact Sipex for applications assistance in choosing coil values not listed in this data sheet. Coil Manufacturers Coilcraft USA Coilcraft Taiwan Ph: (847) 639-6400 Ph: 886/2/264-3646 Fax: (847) 639-1469 ...
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... NSOIC 0.189/0.197 SP4425CN 0.150/0.157 0.228/0.244 0.014/0.019 1 95 SP4425CN per tube, no minimum quantity NSOIC-8 13" reels: P=8mm, W=12mm Pkg. Minimum qty per reel CN 500 CU 500 SP4425DS/20 All package dimensions in inches 0.0256 BSC 0.0965 0.003 0.053/0.069 SP4425CU ...
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... Model SP4425CN . ............................................ -40˚C to +85˚C ......................................... 8-Pin NSOIC SP4425CU . ............................................ -40˚C to +85˚C ......................................... 8-Pin SOIC SP4425CX .............................................. -40˚C to +85˚C ........................................................ Die SP4425NEB ..................................................... N/A ............................... NSOIC Evaluation Board SP4425UEB ..................................................... N/A ............................... SOIC Evaluation Board Please consult the factory for pricing and availability on a Tape-On-Reel option. Corporation SIGNAL PROCESSING EXCELLENCE ...