MP1026 Datasheet, PDF (1/1 Pages) Monolithic Power Systems – CCFL Driver For Handheld Display Applications

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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:
• More light for less power
• Small board implementation
• Low RF emission
• Low external components cost
The MP1026 is suitable for 2-Cell Li-Ion battery
applications using 5V, 9V, or 12V adapters as
the power source.
MP1026
CCFL Driver
For Handheld Display Applications
FEATURES
• 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
“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
Rs
D_A
V_DD
Rbosc
ABrt
R_IL
DBrt
En
Rdbr
Gnd
Cba
F1
V_BATT
MP1026
D_B
Cisb
CbtR
CbtL
Rbleed
Risb
Csfb
Rsfb
Cs2 Rlfb
Cp
Rdamp
Cs1
T1
D_A, D_B: required for V_BATT < 7V
IN4148 or BAT54
MP1026_TAC_S01
MP1026 Rev. 1.6w
www.MonolithicPower.com
1
8/25/2005
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© 2005 MPS. All Rights Reserved.