MC33441 ON Semiconductor, MC33441 Datasheet

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MC33441

Manufacturer Part Number
MC33441
Description
Electroluminescent Lamp Driver IC
Manufacturer
ON Semiconductor
Datasheet
MC33441
Electroluminescent Lamp
Driver IC
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
Types of Applications
© Semiconductor Components Industries, LLC, 2006
July, 2006 − Rev. 3
ENB
VDD
RT1
VSS
The MC33441 is a DC−AC inverter integrated circuit for driving EL
Length = 3.1 mm & Lead Pitch = 0.65 mm)
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,
Pagers, Cellular Phones, Portable CD Players/Minidisks
Databanks, Calculators
1
2
3
4
OSC
FREQUENCY
DIVIDER
Simplified Block Diagram
F
EL
F
COIL
H−BRIDGE
DRIVER
COIL
www.DataSheet4U.com
8
7
6
5
1
EL1
EL2
FILTER
COIL
MC33441DTBR2
Device
ORDERING INFORMATION
VDD
ENB
VSS
RT1
PIN CONNECTIONS AND
MARKING DIAGRAM
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
http://onsemi.com
1
2
3
4
8
DTB SUFFIX
CASE 948J
TSSOP−8
Package
(Top View)
TSSOP−8
Publication Order Number:
1
8
7
6
5
2500 Units / Reel
EL1
EL2
FILTER
COIL
Shipping
MC33441/D

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MC33441 Summary of contents

Page 1

... 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− ...

Page 2

VSS 4 R EXT 3 RT1 FREQ. DIVIDER ENB 2 VDD 1 Pin No. (TSSOP−8) Name Á Á Á Á Á Á Á Á Á Á Á Á Á Pin 1 VDD Á Á Á Á Á Á Á Á ...

Page 3

MAXIMUM RATINGS (T = 25°C, unless otherwise noted.) C Rating Á Á Á Á Á Á Á Á Á Á Á Á Á Á Power Supply Voltage Á Á Á Á Á Á Á Á Á Á Á Á Á ...

Page 4

... General 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 ...

Page 5

EL lamp. And, those switches will remain off until the next clock cycle. H−Bridge Network To achieve the 140 V peak−to−peak voltage, H−bridge network is used to charge and ...

Page 6

TYPICAL OPERATING CHARACTERISTICS 300 250 200 150 100 50 0 50K 75K 100K R (Ω) EXT Figure 4. Oscillator Frequency versus 2. Lamp Freq. = 365 Hz EL lamp = ...

Page 7

... Then, the driver circuit can begin to design. Inductor Selection (L1) Use a 1 mH/0.15 A inductor for MC33441. Higher inductor values can be used to reduce the peak transient coil current from the battery supply. As the value of the inductor (L1), increases, the resistor (R1) value may need to increase correspondingly to provide optimum performance ...

Page 8

... Figure 11. MC33441 PC Board − Top View Figure 12. MC33441 Component Placement Guide − Component Side Figure 13. MC33441 PC Board − Bottom View http://onsemi.com 8 ...

Page 9

... G 0.65 BSC 0.026 BSC H 0.50 0.60 0.020 0.024 −W− J 0.09 0.20 0.004 0.008 J1 0.09 0.16 0.004 0.006 K 0.19 0.30 0.007 0.012 K1 0.19 0.25 0.007 0.010 L 6.40 BSC 0.252 BSC Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative MC33441/D ...

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