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LM3423

AKTIV

N-Kanal-Controller für Konstantstrom-LED-Treiber mit Serien-DIM FET-Treiber und Fehlerflag

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Ähnliche Funktionalität wie verglichener Baustein
TPS92692-Q1 AKTIV Hochgenauer LED-Controller mit Spread-Spectrum-Frequenzmodulation und internem PWM-Generator Multi-topology capabilities with integrated N-channel FET and a spread spectrum synchronization pin.

Produktdetails

Input voltage type DC/DC Topology Boost, Boost Controller, Buck-Boost, SEPIC Vin (min) (V) 4.5 Vin (max) (V) 75 Vout (max) (V) 72 Vout (min) (V) 3 Iout (max) (A) 5 Iq (typ) (mA) 2 Features Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 1 Rating Catalog
Input voltage type DC/DC Topology Boost, Boost Controller, Buck-Boost, SEPIC Vin (min) (V) 4.5 Vin (max) (V) 75 Vout (max) (V) 72 Vout (min) (V) 3 Iout (max) (A) 5 Iq (typ) (mA) 2 Features Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 1 Rating Catalog
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • VIN Range From 4.5 V to 75 V
  • High-Side Adjustable Current Sense
  • 2-Ω, 1-A Peak MOSFET Gate Driver
  • Input Undervoltage and Output Overvoltage Protection
  • PWM and Analog Dimming
  • Cycle-by-Cycle Current Limit
  • Programmable Switching Frequency
  • Zero Current Shutdown and Thermal Shutdown
  • LED Output Status Flag (LM3423 and LM3423-Q0 Only)
  • Fault Status Flag and Timer(LM3423 and LM3423-Q0 Only)
  • VIN Range From 4.5 V to 75 V
  • High-Side Adjustable Current Sense
  • 2-Ω, 1-A Peak MOSFET Gate Driver
  • Input Undervoltage and Output Overvoltage Protection
  • PWM and Analog Dimming
  • Cycle-by-Cycle Current Limit
  • Programmable Switching Frequency
  • Zero Current Shutdown and Thermal Shutdown
  • LED Output Status Flag (LM3423 and LM3423-Q0 Only)
  • Fault Status Flag and Timer(LM3423 and LM3423-Q0 Only)

The LM3421 and LM3423 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421 and LM3423 devices use predictive off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.

The LM3421 and LM3423 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.

The LM3421 and LM3423 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421 and LM3423 devices use predictive off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.

The LM3421 and LM3423 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.

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TPS92692 AKTIV Hochgenauer LED-Controller mit Spread-Spectrum-Frequenzmodulation und internem PWM-Generator This product is a multi-topology low-side NFET LED controller with spread spectrum capability. It supports both analog and PWM dimming (with external P-FET).

Technische Dokumentation

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Typ Titel Datum
* Data sheet LM342x N -Channel Controllers for Constant-Current LED Drivers datasheet (Rev. G) PDF | HTML 30 Jul 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article Driving LEDs: topology matters PDF | HTML 26 Feb 2016
Application note AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 03 Mai 2013
EVM User's guide AN-2010 LM3423 Buck-Boost 2 Layer Evaluation Board (Rev. C) 03 Mai 2013
EVM User's guide AN-2011 LM3423 Boost 2 Layer Evaluation Board (Rev. A) 03 Mai 2013
EVM User's guide AN-1872 LM3423 Boost Evaluation Board (Rev. B) 01 Mai 2013
EVM User's guide AN-1907 LM3423 Buck-Boost Configuration Evaluation Board (Rev. A) 01 Mai 2013
Application note AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) 23 Apr 2013
User guide Ambient Light Adaptive LED Driver User Guide 27 Jan 2012

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LM3423BBLSCSEV — LM3423 Aufwärts-Abwärts- 2-Layer-Low-Side-Stromerfassung – Evaluierungsplatine

This wide range evaluation board showcases the LM3423 NFET controller used with a buck-boost current regulator. It is designed to drive 4 to 8 LEDs at a maximum average LED current of 700 mA from a DC input voltage of 10 to 70V.

The evaluation board showcases most features of the LM3423 including (...)

Benutzerhandbuch: PDF
Evaluierungsplatine

LM3423BS2LYEV — Aufwärts-2-Schicht-LED-Treiber-Evaluierungsplatine

This evaluation board showcases the LM3423 NFET controller used with a boost current regulator. It is designed to drive 9 to 12 LEDs at a maximum average LED current of 700mA from a DC input voltage of 10 to 26V. The evaluation board showcases most features of the LM3423 including PWM dimming, (...)

Benutzerhandbuch: PDF
Simulationsmodell

LM3423 PSpice Transient Model (Rev. A)

SNVMA70A.ZIP (124 KB) - PSpice Model
Simulationsmodell

LM3423 TINA-TI Startup Reference Design

SNVMAS4.TSC (803 KB) - TINA-TI Reference Design
Simulationsmodell

LM3423 TINA-TI Steady Reference Design

SNVMAS3.TSC (808 KB) - TINA-TI Reference Design
Simulationsmodell

LM3423 TINA-TI Transient Spice Model

SNVMAS2.ZIP (21 KB) - TINA-TI Spice Model
Simulationstool

PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool

PSpice® für TI ist eine Design- und Simulationsumgebung, welche Sie dabei unterstützt, die Funktionalität analoger Schaltungen zu evaluieren. Diese voll ausgestattete Design- und Simulationssuite verwendet eine analoge Analyse-Engine von Cadence®. PSpice für TI ist kostenlos erhältlich und (...)
Referenzdesigns

PMP8522 — Hochleistungs-LED-Treiber (3,0 A bei 18–26 V)

This design is a LED driver for automotive applications. It has dimming capability (60 Hz @ 0.1-4ms on-time) and is thermally designed to work with a maximum duty cycle of 25%.
Test report: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HTSSOP (PWP) 20 Ultra Librarian

Bestellen & Qualität

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  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

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