Datasheet > SP4491EU

SP4491EU

更新时间： 2024-11-28 22:42:51

品牌	Logo	应用领域
西伯斯 - SIPEX		驱动器
页数	文件大小	规格书
13页	157K
描述
Two Panel Electroluminscent Lamp Driver

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SP4491EU 数据手册

SP4491

Two Panel Electroluminscent Lamp Driver

ꢀꢀSingle IC Drives 2 EL Lamps

For Backlighting:

• Cell Phone Keypad & LCD

• Multi-Color EL Lamps

• Multi-Segment EL Lamps

ꢀꢀControl Over Lamp-A & Lamp-B For

Independent Or Concurrent Operation

ꢀꢀ+2.2V to +6.0V Battery Operation

ꢀꢀSingle Coil Used To Generate High

Voltage AC Outputs

ꢀꢀLow Power Standby Mode Draws 100nA

Typical Current

ꢀꢀA Single Resistor Controls the Internal

Oscillator

ꢀꢀDC-AC Inverter Produces Up To 220V_PP

ꢀꢀSpace-Saving 10MSOP Package

APPLICATIONS

ꢀꢀCellular Phones

ꢀꢀPDA's

ꢀꢀHandheld GPS Units

ꢀꢀSecurity Systems

ꢀꢀPOS Terminals

DESCRIPTION

The SP4491 electroluminescent lamp driver provides designers of cell phones PDA's and

other handheld, portable electronic devices with an integrated solution for driving two EL

lamps independently or concurrently. The SP4491 reduces system cost, component count

and board space requirements over a discrete 2-EL driver approach. The EL lamps operate

inoppositephasesotheSP4491canbeeasilyimplementedinapplicationsdrivingmulti-color

ormulti-segmentELlamps. TheSP4491operates froma+2.2Vto+6.0Vbatterysource. The

device features a low power standby mode which draws less than 1µA. The frequency of the

internal oscillator is set using a single external resistor. A single external inductor is required

togeneratethehighvoltageACoutputstodrivetheELlamps. AllinputpinsareESDprotected

with internal diodes to V_DDand V_SS.

ELEN1

EL1

EL2

SP4491

OSC

ELcommon

CAP

ELEN2

COIL

Rev. 12/19/00

SP4491 Two Panel Electroluminescent Lamp Driver

12 3 4 5 6 7...13

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