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LM3429 Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce LM3429
Description  N-Channel Controller for Constant Current LED Drivers
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM3429 Fiches technique(HTML) 1 Page - Texas Instruments

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LM3429, LM3429-Q1
SNVS616H – APRIL 2009 – REVISED JULY 2015
LM3429/-Q1 N-Channel Controller for Constant Current LED Drivers
1 Features
3 Description
The LM3429 is a versatile high voltage N-channel
1
LM3429-Q1 is AEC-Q100 Grade 1 Qualified for
MosFET controller for LED drivers. It can be easily
Automotive Applications
configured in buck, boost, buck-boost and SEPIC
VIN Range From 4.5 V to 75 V
topologies. This flexibility, along with an input voltage
Adjustable Current Sense Voltage
rating
of
75V,
makes
the
LM3429
ideal
for
illuminating LEDs in a very diverse, large family of
High-Side Current Sensing
applications.
2-
Ω, 1-A Peak MosFET Gate Driver
Adjustable high-side current sense voltage allows for
Input Undervoltage Protection
tight regulation of the LED current with the highest
Overvoltage Protection
efficiency possible. The LM3429 uses Predictive Off-
PWM Dimming
time (PRO) control, which is a combination of peak
current-mode control and a predictive off-timer. This
Analog Dimming
method
of
control
eases
the
design
of
loop
Cycle-by-Cycle Current Limit
compensation while providing inherent input voltage
Programmable Switching Frequency
feed-forward compensation.
Low Profile 14-lead HTSSOP Package
The LM3429 includes a high-voltage startup regulator
Thermal Shutdown
that operates over a wide input range of 4.5 V to 75
V. The internal PWM controller is designed for
2 Applications
adjustable switching frequencies of up to 2 MHz, thus
enabling
compact
solutions.
Additional
features
LED Drivers - Buck, Boost, Buck-Boost, SEPIC
include analog dimming, PWM dimming, overvoltage
Indoor and Outdoor SSL
protection,
undervoltage
lock-out,
cycle-by-cycle
current limit, and thermal shutdown.
Automotive
General Illumination
Device Information(1)
Constant-Current Regulators
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM3429
HTSSOP (14)
5.00 mm × 4.40 mm
LM3429-Q1
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Boost Application Circuit
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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