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LM3402 Scheda tecnica(PDF) 1 Page - Texas Instruments

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Il numero della parte LM3402
Spiegazioni elettronici  0.5A Constant Current Buck Regulator
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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LM3402, LM3402HV
SNVS450F – SEPTEMBER 2006 – REVISED OCTOBER 2015
LM3402/HV 0.5-A Constant Current Buck Regulator for Driving High Power LEDs
1 Features
3 Description
The LM3402/HV are monolithic switching regulators
1
Integrated 0.5-A N-channel MOSFET
designed to deliver constant currents to high power
VIN Range from 6 V to 42 V (LM3402)
LEDs. Ideal for automotive, industrial, and general
VIN Range from 6 V to 75 V (LM3402HV)
lighting applications, they contain a high-side N-
channel MOSFET switch with a current limit of 735
500 mA Output Current Over Temperature
mA
(typical)
for
step-down
(Buck)
regulators.
Cycle-by-Cycle Current Limit
Hysteretic control with controlled ON-time coupled
No Control Loop Compensation Required
with an external resistor allow the converter output
voltage to adjust as needed to deliver a constant
Separate PWM Dimming and Low Power
current to series and series - parallel connected
Shutdown
arrays of LEDs of varying number and type, LED
Supports All Ceramic-Output Capacitors and
dimming
by
pulse
width
modulation
(PWM),
Capacitor-Less Outputs
broken/open LED protection, low-power shutdown
Thermal Shutdown Protection
and thermal shutdown complete the feature set.
VSSOP, SO PowerPAD™ Packages
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
2 Applications
VSSOP (8)
3.00 mm × 3.00 mm
LED Drivers
LM3402/HV
HSOP (8)
4.89 mm × 3.90 mm
Constant Current Source
(1) For all available packages, see the orderable addendum at
Automotive Lighting
the end of the data sheet.
General Illumination
Industrial Lighting
Typical Application Diagram
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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