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LM3424-Q1 Folha de dados(PDF) 1 Page - Texas Instruments

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Nome de Peças LM3424-Q1
Descrição Electrónicos  Constant Current N-Channel Controller with Thermal Foldback for Driving LEDs
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

LM3424-Q1 Folha de dados(HTML) 1 Page - Texas Instruments

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EN
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LM3424, LM3424-Q1
SNVS603C – AUGUST 2009 – REVISED AUGUST 2015
LM3424/-Q1 Constant Current N-Channel Controller with Thermal Foldback for Driving
LEDs
1 Features
3 Description
The LM3424 is a versatile high voltage N-channel
1
LM3424-Q1 is an Automotive Grade Product That
MOSFET controller for LED drivers. It can be easily
is AEC-Q100 Grade 1 Qualified
configured in buck, boost, buck-boost and SEPIC
VIN Range from 4.5V to 75V
topologies. In addition, the LM3424 includes a
High-Side Adjustable Current Sense
thermal
foldback
feature
for
temperature
management of the LEDs. This flexibility, along with
2-
Ω, 1-A Peak MOSFET Gate Driver
an input voltage rating of 75 V, makes the LM3424
Input Undervoltage and Output Overvoltage
ideal for illuminating LEDs in a large family of
Protection
applications.
PWM and Analog Dimming
Adjustable high-side current sense allows for tight
Cycle-by-Cycle Current Limit
regulation of the LED current with the highest
Programmable Softstart and Slope Compensation
efficiency possible. The LM3424 uses standard peak
current-mode control providing inherent input voltage
Programmable, Synchronizable Switching
feed-forward compensation for better noise immunity.
Frequency
It is designed to provide accurate thermal foldback
Programmable Thermal Foldback
with a programmable foldback breakpoint and slope.
Precision Voltage Reference
In addition, a 2.45V reference is provided.
Low Power Shutdown and Thermal Shutdown
The LM3424 includes a high-voltage startup regulator
that operates over a wide input range of 4.5 V to 75
2 Applications
V. The internal PWM controller is designed for
adjustable switching frequencies of up to 2.0 MHz
LED Drivers - Buck, Boost, Buck-Boost, and
and
external
synchronization
is
possible.
The
SEPIC
controller is capable of high speed PWM dimming
Indoor and Outdoor Area SSL
and analog dimming.
Automotive
Device Information(1)
General Illumination
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Constant-Current Regulators
LM3424
HTSSOP (20)
6.50 mm x 4.40 mm
Typical Boost Application Circuit
LM3424-Q1
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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