MITSUMI
Step-Up IC For EL Backlights MM1365
Step-Up IC For EL Backlights
Monolithic IC MM1365
Outline
This is a step-up IC developed for use in EL backlights.
Because of their ability to light the entire panel uniformly, EL backlights are gradually becoming more
widespread compared with LEDs.
In particular, recently there has been a strong tendency toward smaller sizes and lighter weights, and more
manufacturers are adopting ICs in place of transformers to step up voltages.
This IC was designed to meet these market needs.
Features
1. Low-voltage driving possible
2. Brightness can be adjusted
3. Can be driven using a small coil
4. On/off control possible
V
IN
=0.95V min.
The brightness can be adjusted by changing the oscillation
frequency through the externally mounted capacitance
Coil inductance of about 820µH required
Current consumption while off=10µA or less
Package
VSOP-8
Applications
1.
2.
3.
4.
Pagers
Portable phones, PHS
Wristwatches
Display components of remote-controlled minidiscs, CD players, headphone stereos, other equipment
Pin Assignment
1
2
8
7
6
5
3
4
1
2
3
4
5
6
VSOP-8
7
O2
O1
GND
N.C
CT1
CT2
Power supply
switch
V
CC
For setting discharge frequency
For setting charging frequency
H to turn on, L to turn off
Power supply pin
Charging frequency setting; drives
external transistor
Discharge frequency setting; drives
external transistor
GND
8
MITSUMI [ MITSUMI ELECTRONICS, CORP. ]
