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LM3430 데이터시트(PDF) 1 Page - Texas Instruments

부품명 LM3430
상세설명  Boost Controller for LED Backlighting
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홈페이지  http://www.ti.com
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LM3430 데이터시트(HTML) 1 Page - Texas Instruments

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VIN
FB
COMP
VCC
OUT
RT
UVLO
GND
CS
SS
LM3430
VIN
VO
VDHC
NC
LM3430
www.ti.com
SNVS472B – JANUARY 2007 – REVISED MAY 2013
Boost Controller for LED Backlighting
Check for Samples: LM3430
1
FEATURES
DESCRIPTION
The LM3430 is a high voltage low-side N-channel
2
Internal 40V Startup Regulator
MOSFET controller. Ideal for use in a boost regulator,
1A Peak MOSFET Gate Driver
the LM3430 can power the LED backlight in LCD
VIN Range 6V to 40V
panels, such as in notebook PCs. It contains all of the
features needed to implement single ended primary
Duty Cycle Limit in Excess of 90%
topologies. Output voltage regulation is based on
Programmable UVLO with Hysteresis
current-mode control, which eases the design of loop
Cycle-by-Cycle Current Limit
compensation while providing inherent input voltage
feed-forward.
The
LM3430
includes
a
start-up
External Synchronizable (AC-coupled)
regulator that operates over a wide input range of 6V
Single Resistor Oscillator Frequency Set
to 40V. The PWM controller is designed for high
Slope Compensation
speed capability including an oscillator frequency
range up to 2 MHz and total propagation delays less
Adjustable Soft-start
than 100 ns. Additional features include an error
WSON-12 (3mm x 3mm)
amplifier,
precision
reference,
line
under-voltage
lockout,
cycle-by-cycle
current
limit,
slope
APPLICATIONS
compensation,
soft-start,
external
synchronization
LED Backlight Driver (companion to LM3432)
capability and thermal shutdown. The LM3430 is
available in the WSON-12 package.
Boost Converter
SEPIC Converter
Typical Application
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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