MP3393 반도체 회로 부품 판매점
8-String Step-Up White LED Driver
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 MPS |
The Future of Analog IC Technology
DESCRIPTION
The MP3393 is a step-up controller with 8
current channel sources designed to power
WLED backlights for large LCD panels.
The MP3393 uses current-mode fixed-frequency
architecture. It drives an external MOSFET to
boost the output voltage. The switching frequency
is programmable by an external setting resistor.
The MP3393 integrates a constant-current control
circuit to regulate the current in each LED string
to the value set by an external current feedback
resistor. Current matching can achieve 1.2%
regulation accuracy between strings. Its low
202mV regulation voltage reduces power loss
and improves efficiency.
The MP3393 includes protections including
under-voltage lockout, LED open/short protection,
and thermal shutdown. The fault flag pin indicates
the statuses of all fault signals.
The MP3393 can be daisy-chained to expand
the number of LED channels. It is available in
TSSOP28EP and SOIC28 packages.
MP3393
8-String Step-Up White LED Driver
with External Transistor
FEATURES
• 9V-to-32V Input Voltage Range
• Drives 8 Channels of LED strings
• Internal Constant-Current Control
• Maximum Channel Current Over 350mA
• 1.2% Current Matching Accuracy Between
Strings
• Programmable Switching Frequency
• Analog Dimming and External PWM
Dimming
• Open and Short LED Protection
• Programmable Over-Voltage Protection
• Fault Output Flag
• Thermal Shutdown
• Extendable LED Channels that Share One
Power Stage Set
• TSSOP28EP and SOIC28 Packages
APPLICATIONS
• Flat Panel Video Displays
• LCD TVs and Monitors
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
MP3393 Rev. 1.05
www.MonolithicPower.com
3/26/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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MP3393—8-STRING WHITE LED DRIVER WITH STEP-UP CONTROLLER
TYPICAL APPLICATION
VIN
CIN
L1
D1
COUT
8 WLED Strings
FF
Enable
DIM
CVCC
C RCOMP
COMP
ROSC
1
RFF
2
VIN
VCC
VFAULT 28
GATE 27
23
FF
ISENSE 26
3
COMP
GND 25
4 OSC
OVP 24
5
EN
8
CTL1
MP33936 DIM
7
FB1
22 FB8
10
CTL2
21 CTL8
9
FB2
20
FB7
12
CTL3
19
CTL7
11
FB3
18 FB6
14
CTL4
17 CTL6
13
FB4
16 FB5
CTL5 15
R1
R2
M1
RSENSE
RS1
RS2
RS3
RS4
RS2
RS3
RS4
MP3393 Rev. 1.05
www.MonolithicPower.com
3/26/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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제조업체: MPS
( mps )
MP3393 led
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[ MP3393.PDF ]
[ MP3393 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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