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MC33441 Datasheet

Electroluminescent Lamp Driver IC

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MC33441 pdf
MC33441
Electroluminescent Lamp
Driver IC
The MC33441 is a DCAC 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
Hbridge 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 8Pin 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 PullDown Resistor
8Pin TSSOP Package (Thickness = 1.05 mm, Width = 4.5 mm,
Length = 3.1 mm & Lead Pitch = 0.65 mm)
Types of Applications
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Pagers, Cellular Phones, Portable CD Players/Minidisks
Databanks, Calculators
VDD
ENB
RT1
VSS
1
2
3
4
OSC
HBRIDGE
FEL
8 EL1
7 EL2
6 FILTER
5 COIL
FREQUENCY
DIVIDER
FCOIL
COIL
DRIVER
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8
1
TSSOP8
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 TSSOP8 2500 Units / Reel
Simplified Block Diagram
© Semiconductor Components Industries, LLC, 2006
July, 2006 Rev. 3
1
Publication Order Number:
MC33441/D


  ON Semiconductor Electronic Components Datasheet  

MC33441 Datasheet

Electroluminescent Lamp Driver IC

No Preview Available !

MC33441 pdf
REXT
VSS
4
RT1
ENB
VDD
3 OSC
&
FREQ.
DIVIDER
2
FCOIL
1 FEL
MC33441
Battery / VDD
INDUCTOR
COIL DRIVER
MAIN SWITCH 5
6
COIL
FILTER
OPTIONAL
AANNDD22
HBRIDGE
AND2
7 EL2
8 EL1
CFILTER
EL LAMP
Figure 1. Test Circuit
PIN FUNCTION DESCRIPTION
Pin No.
(TSSOP8)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPin 1
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPin 2
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPin 3
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPin 4
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPin 5
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPin 6
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPin 7
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPin 8
Name
VDD
ENB
RT1
VSS
COIL
Filter
EL2
EL1
Description
Input voltage supply
Enable the whole device to operate
Internal oscillator’s fine tuning resistance input
Analog/Power ground
Coil/Inductance input
EL Filter
EL lamp driver output 2
EL lamp driver output 1
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2


Part Number MC33441
Description Electroluminescent Lamp Driver IC
Maker ON Semiconductor
Total Page 9 Pages
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