MC33441 Datasheet, PDF (1/12 Pages) ON Semiconductor – Electroluminescent Lamp Driver IC

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 1.8V to
3.5V and is capable to supply a typical 140Vpp AC output voltage.
The standby current of the device is typically 10nA 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 1.8V – 3.5V
• Typical Voltage Output 140Vpp
• Typical Standby Current 10nA
• Internal Oscillator with External Tuning Resistor
• Enable Control Pin with a 300K Internal Pull–Down Resistor
• 8–Pin TSSOP Package (Thickness = 1.05mm, Width = 4.5mm,
Length = 3.1mm & Lead Pitch = 0.65mm)
Types of Applications:
• Pagers, Cellular Phones, Portable CD Players/Minidisks
• Databanks, Calculators
Simplified Block Diagram
VDD 1
ENB 2
OSC
RT1 3
VSS 4
8
EL1
H–BRIDGE
FEL
7
EL2
6
FILTER
5
COIL
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
FREQUENCY
DIVIDER
FCOIL
COIL
DRIVER
© Semiconductor Components Industries, LLC, 2000
1
April, 2000 – Rev. 1
Publication Order Number:
MC33441/D