Datasheet Linear Technology LT3932 — Даташит

Производитель	Linear Technology
Серия	LT3932

36V, 2A Synchronous Step-Down LED Driver

Datasheets

Скачать

PDF, 1.2 Мб, Версия: A, Файл закачен: 27 мар 2018

Выписка из документа

Цены

Купить LT3932 на РадиоЛоцман.Цены — от 270 до 2 481 ₽ 20 предложений от 10 поставщиков LED Driver IC 1 Output DC DC Regulator Step-Down (Buck) Analog, PWM Dimming 2A 28-QFN (4x5)
AiPCBA Весь мир	LT3932IUFD#PBF Analog Devices	270 ₽
ChipWorker Весь мир	LT3932IUFD#PBF Analog Devices	274 ₽
Utmel Весь мир	LT3932EUFD#PBF Analog Devices	от 2 119 ₽
FAV Technology Весь мир	LT3932IUFD#PBF Analog Devices	по запросу

Выбираем схему BMS для заряда литий-железофосфатных (LiFePO4) аккумуляторов

Корпус / Упаковка / Маркировка

	LT3932EUFD#PBF	LT3932EUFD#TRPBF	LT3932HUFD#PBF	LT3932HUFD#TRPBF	LT3932IUFD#PBF	LT3932IUFD#TRPBF
N	1	2	3	4	5	6
Корпус	4x5 QFN-28 Габаритный чертеж корпуса	4x5 QFN-28 Габаритный чертеж корпуса	4x5 QFN-28 Габаритный чертеж корпуса	4x5 QFN-28 Габаритный чертеж корпуса	4x5 QFN-28 Габаритный чертеж корпуса	4x5 QFN-28 Габаритный чертеж корпуса
Код корпуса	UFD	UFD	UFD	UFD	UFD	UFD
Индекс корпуса	05-08-1712	05-08-1712	05-08-1712	05-08-1712	05-08-1712	05-08-1712
Количество выводов	28	28	28	28	28	28

Параметры

Parameters / Models	LT3932EUFD#PBF	LT3932EUFD#TRPBF	LT3932HUFD#PBF	LT3932HUFD#TRPBF	LT3932IUFD#PBF	LT3932IUFD#TRPBF
Demo Boards	DC2286A	DC2286A	DC2286A	DC2286A	DC2286A	DC2286A
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Dimming	5000:1 PWM Dimming at 100Hz, 128:1 Internal PWM Dimming	5000:1 PWM Dimming at 100Hz, 128:1 Internal PWM Dimming	5000:1 PWM Dimming at 100Hz, 128:1 Internal PWM Dimming	5000:1 PWM Dimming at 100Hz, 128:1 Internal PWM Dimming	5000:1 PWM Dimming at 100Hz, 128:1 Internal PWM Dimming	5000:1 PWM Dimming at 100Hz, 128:1 Internal PWM Dimming
Экспортный контроль	нет	нет	нет	нет	нет	нет
Основные особенности	Spread Spectrum, Silent Switcher Architecture, External Synchronization, Resistor Set Frequency	Spread Spectrum, Silent Switcher Architecture, External Synchronization, Resistor Set Frequency	Spread Spectrum, Silent Switcher Architecture, External Synchronization, Resistor Set Frequency	Spread Spectrum, Silent Switcher Architecture, External Synchronization, Resistor Set Frequency	Spread Spectrum, Silent Switcher Architecture, External Synchronization, Resistor Set Frequency	Spread Spectrum, Silent Switcher Architecture, External Synchronization, Resistor Set Frequency
Тактовая частота, kHz	2000	2000	2000	2000	2000	2000
Ishutdown, мкА	2	2	2	2	2	2
Isupply, мА	2.2	2.2	2.2	2.2	2.2	2.2
Max Number of LEDs	10	10	10	10	10	10
Monolithic	да	да	да	да	да	да
Количество выходов	1	1	1	1	1	1
Рабочий диапазон температур, °C	от 0 до 85	от 0 до 85	от -40 до 125	от -40 до 125	от -40 до 85	от -40 до 85
Выходной ток, A	2	2	2	2	2	2
Switch Current, A	3	3	3	3	3	3
Synchronous	да	да	да	да	да	да
Topology	Buck, LED Driver	Buck, LED Driver	Buck, LED Driver	Buck, LED Driver	Buck, LED Driver	Buck, LED Driver
Vin Max, В	36	36	36	36	36	36
Vin Min, В	3.6	3.6	3.6	3.6	3.6	3.6
Vout Max, В	36	36	36	36	36	36

Экологический статус

	LT3932EUFD#PBF	LT3932EUFD#TRPBF	LT3932HUFD#PBF	LT3932HUFD#TRPBF	LT3932IUFD#PBF	LT3932IUFD#TRPBF
RoHS	Совместим	Совместим	Совместим	Совместим	Совместим	Совместим

Другие варианты исполнения

LT3932-1

Design Notes

Скачать
36V, 2A LED Driver with 5000:1 PWM Dimming Meets CISPR 25 Class 5 EMI Limits with Silent Switcher Architecture &mdash DN570
PDF, 446 Кб, Файл опубликован: 7 ноя 2017
Выписка из документа
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 …

Модельный ряд

Серия: LT3932 (6)

LT3932EUFD#PBF LT3932EUFD#TRPBF LT3932HUFD#PBF LT3932HUFD#TRPBF LT3932IUFD#PBF LT3932IUFD#TRPBF

Классификация производителя

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