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MC33441

Electroluminescent Lamp Driver IC

ON Semiconductor 

MC33441

Electroluminescent Lamp

Driver IC

The MC33441 is a DC−AC inverter integrated circuit for driving EL

lamps. It can boost the supply voltage to the level required by EL

lamps and also provide high voltage AC lamp excitation. It consists of

an oscillator, a frequency divider, a coil driving circuit and a switched

H−bridge network. The input supply voltage range is from 1.8 V to

3.5 V and is capable to supply a typical 140 Vpp AC output voltage.

The standby current of the device is typically 10 nA which is ideal for

low power portable products. Externally, one inductor and one resistor

are needed to generate the desirable voltage charge and to fine tune the

oscillator’s frequency. This device is offered in 8−Pin TSSOP

miniature package. The operating temperature is −20°C to 70°C.

Features

• Battery Operation 1.8 V − 3.5 V

• Typical Voltage Output 140 Vpp

• Typical Standby Current 10 nA

• Internal Oscillator with External Tuning Resistor

• Enable Control Pin with a 300 K Internal Pull−Down Resistor

• 8−Pin TSSOP Package (Thickness = 1.05 mm, Width = 4.5 mm,

Length = 3.1 mm & Lead Pitch = 0.65 mm)

Types of Applications

• Pagers, Cellular Phones, Portable CD Players/Minidisks

• Databanks, Calculators

VDD 1

ENB 2

RT1 3

VSS 4

OSC

H−BRIDGE

FEL

8 EL1

7 EL2

6 FILTER

5 COIL

FREQUENCY

DIVIDER

FCOIL

COIL

DRIVER

http://onsemi.com

8

1

TSSOP−8

DTB SUFFIX

CASE 948J

PIN CONNECTIONS AND

MARKING DIAGRAM

VDD 1

ENB 2

RT1 3

VSS 4

8 EL1

7 EL2

6 FILTER

5 COIL

(Top View)

A = Assembly Location

L = Wafer Lot

Y = Year

W = Work Week

ORDERING INFORMATION

Device

Package

Shipping

MC33441DTBR2 TSSOP−8 2500 Units / Reel

Simplified Block Diagram

© Semiconductor Components Industries, LLC, 2006

1

July, 2006 − Rev. 3

Publication Order Number:

MC33441/D

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