SP4423CN Exar Corporation, SP4423CN Datasheet

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SP4423CN

Manufacturer Part Number
SP4423CN
Description
Manufacturer
Exar Corporation
Datasheet

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Part Number
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Price
Part Number:
SP4423CN
Manufacturer:
SIPEX
Quantity:
90
Part Number:
SP4423CN
Manufacturer:
SIPEX
Quantity:
20 000
Part Number:
SP4423CN-L/TR
Manufacturer:
DANFOSS
Quantity:
119
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
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
SP4423DS/14
APPLICATIONS
2.2V-5.0V Battery Operation
50nA Maximum Standby Current
High Voltage Output 160 V
Internal Oscillator
PDAs
Cellular Phones
Remote Controls
Hand Held Computers
®
COIL
HON
EL2
V
SS
PP
1
2
3
4
typical
SP4423Electroluminescent Lamp Driver
Electroluminescent Lamp Driver
SP4423
1
Low Power Applications
8
7
6
5
V
CAP 2
CAP 1
PP
EL1
DD
signals, making it ideal for
© Copyright 2000 Sipex Corporation
SP4423

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SP4423CN Summary of contents

Page 1

Battery Operation 50nA Maximum Standby Current High Voltage Output 160 V PP Internal Oscillator APPLICATIONS PDAs Cellular Phones Remote Controls Hand Held Computers DESCRIPTION The SP4423 is a high voltage output DC-AC converter that can operate from a ...

Page 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 ...

Page 3

PIN DESCRIPTION Pin 1 – HON- Enable for driver operation, high = active; low = inactive. Pin 2 – Power supply common, connect to SS ground. Pin 3 – Coil- Coil input, connect coil ...

Page 4

The on-chip oscillator of the SP4423 can be overdriven with an external clock source by removing the C capacitor and connecting a OSC clock source to pin 8 (Cap 2). The clock should have a 50% duty cycle and range ...

Page 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 ...

Page 6

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 vs. C OSC 800 700 600 500 X ...

Page 7

Lamp Frequency vs. Lamp Size 250 200 150 100 50 0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 Square Inches C = 220pF, Coil = 9mH/35 ohms OSC I vs. Lamp Size TOTAL ...

Page 8

X 100 0 2.0 Lamp = 1sq. in., Coil = 9mH/35 ohms 2.0 Lamp = 1sq. in., Coil = 9mH/35 ohms 160 ...

Page 9

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; 74% duty cycle. Figure 2. Voltage pulses released from the coil to the EL driver ...

Page 10

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: ...

Page 11

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 SP4423DS/14 EL Lamp manufacturers Metro Mark/Leading Edge NEC Corporation Minnetonka, MN Tokyo, Japan Phone: (800) 680-5556 Phone: (03) 3798-9572 ...

Page 12

NSOIC 0.189/0.197 SP4423ACN 0.150/0.157 0.228/0.244 0.014/0.019 1 95 SP4423ACN per tube, no minimum quantity NSOIC-8 13" reels: P=8mm, W=12mm SOIC-8 13" reels: P=8mm, W=12mm Pkg. Minimum qty per reel ACN 500 ACU 500 SP4423DS/14 All package dimensions in inches ...

Page 13

... Model SP4423CN . ............................................. 0˚C to +70˚C ........................................... 8-Pin NSOIC SP4423CU . ............................................. 0˚C to +70˚C ........................................... 8-Pin SOIC SP4423CX ............................................... 0˚C to +70˚C .......................................................... 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 ...

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