TM
MP1026
CCFL Driver
For Handheld Display Applications
The Future of Analog IC Technology
TM
DESCRIPTION
The MP1026 is a Power IC that offers a
complete solution for driving a Cold Cathode
Fluorescent Lamp (CCFL). This Power IC
converts unregulated DC voltage to a nearly
pure sine wave required to ignite and operate
the CCFL.
The MP1026 greatly increases power
conversion efficiency and supports both analog
and burst mode dimming, simplifying the module
implementation. The MP1026 offers the
following distinct performance advantages:
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More light for less power
Small board implementation
Low RF emission
Low external components cost
FEATURES
•
•
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4.5V to 14V Power Input (V
Batt
)
Increase Transformer Reliability
Open Lamp Timer and Regulation
Current and Voltage Feedback Control
Logic Level Burst Mode Control
Supports Open/Short Lamp Protection
Soft-Start
Outputs are Short Circuit Protected
Allows Burst-Mode Operation
Improved Line Transient Response
Tightened Lamp Current Accuracy
APPLICATIONS
Portable DVD Players
PDAs
Camcorders
Digital Cameras
The MP1026 is suitable for 2-Cell Li-Ion battery
applications using 5V, 9V, or 12V adapters as
the power source.
“MPS” and “Monolithic Power Systems” are Trademarks of Monolithic
Power Systems, Inc.
The MP1026 is covered by US Patents 6,316,881 and 6,114,814.
TYPICAL APPLICATION
Cisb
Rs
Ccomp
CbaR
Cft
Risb
CbtR
Csfb
12
11
D
A
14
V
DD
20
19
18
17
16
15
13
Cs2
Rlfb
AGnd
Comp
PGnd
Vdd
FT
VLFB
OutR
ISFB
Batt
Rbosc
Bosc
DBrt
Abrt
IL
MP1026
PGnd
OutL
Batt
Vdd
BtL
En
BtR
Rsfb
Cp
Rdamp
Cs1
CbtL
T1
1
2
3
4
5
6
7
8
9
ABrt
R
IL
D
B
DBrt
Cbosc
CbaL
Cvdd
En
Rdbr
Rbleed
Cdbr
10
D
A
, D
B
: required for V
BATT
< 7V
IN4148 or BAT54
Gnd
Cba
F1
V
BATT
MP1026_TAC_S01
MP1026 Rev. 1.6w
8/25/2005
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
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MPS [ MONOLITHIC POWER SYSTEMS ]
