MPS MP1026

TM
MP1026
CCFL Driver
For Handheld Display Applications
The Future of Analog IC Technology
TM
DESCRIPTION
FEATURES
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.
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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
4.5V to 14V Power Input (VBatt)
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
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The MP1026 is suitable for 2-Cell Li-Ion battery
applications using 5V, 9V, or 12V adapters as
the power source.
Portable DVD Players
PDAs
Camcorders
Digital Cameras
“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
CbaR
Cft
Ccomp
Rs
DA
Risb
CbtR
VDD
Cs2
Rbosc
RIL
11
BtL
Rdamp
10
PGnd
9
7
8
Batt
OutL
Cp
Vdd
6
En
5
Bosc
DBrt
4
3
IL
2
1
Abrt
MP1026
ABrt
Rlfb
Rsfb
BtR
12
PGnd
13
Batt
OutR
14
15
Comp
Vdd
16
17
FT
18
VLFB
19
ISFB
AGnd
20
Csfb
Cs1
CbtL
DB
T1
DBrt
CbaL
Cvdd
Cdbr
Rdbr
Cbosc
En
Rbleed
DA, DB: required for VBATT < 7V
IN4148 or BAT54
Gnd
Cba
F1
VBATT
MP1026 Rev. 1.6w
8/25/2005
MP1026_TAC_S01
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
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