Datasheet Linear Technology LT3932EUFD-1#PBF — Ficha de datos

Fabricante	Linear Technology
Serie	LT3932-1
Numero de parte	LT3932EUFD-1#PBF

Controlador LED de paso descendente síncrono de 36 V y 2 A

Hojas de datos

PDF, 1.2 Mb, Revisión: A, Archivo subido: marzo 27, 2018

Extracto del documento

Precios

Embalaje

Package	4x5 QFN-28
Package Code	UFD
Package Index	05-08-1712

Paramétricos

Demo Boards	DC2286A
Design Tools	LTspice Model
Dimming	5000:1 PWM Dimming at 100Hz, 128:1 Internal PWM Dimming
Export Control	no
Features	Spread Spectrum, Silent Switcher Architecture, External Synchronization, Resistor Set Frequency
Frequency	2000 kHz
Ishutdown	2 µA
Isupply	2.2 mA
Max Number of LEDs	10
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	2 A
Switch Current	3 A
Synchronous	yes
Topology	Buck, LED Driver
Vin Max	36 V
Vin Min	3.6 V
Vout Max	36 V

Plan ecológico

RoHS

Obediente

Otras opciones

Notas de Diseño

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36V, 2A LED Driver with 5000:1 PWM Dimming Meets CISPR 25 Class 5 EMI Limits with Silent Switcher Architecture &mdash DN570
PDF, 446 Kb, Archivo publicado: nov 7, 2017
Extracto del documento
Design Note
36V, 2A LED Driver with 5000:1 PWM Dimming Meets CISPRВ 25
Class 5 EMI Limits with Silent Switcher Architecture
Kyle Lawrence
Introduction
The LED backlights in automotive heads-up displays,
infotainment systems, and dashboard lighting must be
bright enough to compete with direct sunlight streaming
into a car during the day, yet capable of reducing brightness
by several orders of magnitude to avoid blinding a driver at
night. Generic LED drivers struggle to achieve such high
dimming ratios.
The LT3932 synchronous step-down LED driver with
integrated 36V, 2A switches features high ratio PWM
dimming. The LT3932 houses its high efficiency integrated
power switches inside a small 4mm Г— 5mm QFN package,
and can be run at up to 2MHz switching frequency for a
compact, high bandwidth design. When high dimming ratio
capability is not needed, and simplicity is paramount, its
internal PWM generator can be used to produce 128:1 PWM 9V TO
36V High PWM Dimming Ratio
With the LT3932 operating at a dimming frequency of
100Hz and a switching frequency of 2MHz, a high current …

Linea modelo

Serie: LT3932-1 (6)

LT3932EUFD-1#PBF LT3932EUFD-1#TRPBF LT3932HUFD-1#PBF LT3932HUFD-1#TRPBF LT3932IUFD-1#PBF LT3932IUFD-1#TRPBF

Clasificación del fabricante

Power Management > LED Driver ICs > Step-Down (Buck) LED Drivers
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) LED Drivers

Otros nombres:

LT3932EUFD-1PBF, LT3932EUFD-1 PBF, LT3932EUFD1#PBF, LT3932EUFD 1#PBF

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