Datasheet Linear Technology LTC3839 — Даташит

Производитель	Linear Technology
Серия	LTC3839

Быстрый, точный, 2-фазный понижающий DC / DC-регулятор с одним выходом и дифференциальным выходом

Datasheets

Просмотр и загрузка

PDF, 944 Кб, Язык: анг., Файл закачен: 23 сен 2017, Страниц: 50
Fast, Accurate, 2-Phase, Single-Output Step-Down DC/DC Controller with Differential Output Sensing

Выписка из документа

Цены

Купить LTC3839 на РадиоЛоцман.Цены — от 140 до 1 260 ₽ 38 предложений от 18 поставщиков , Fast, Accurate, 2-Phase, Single-Output Step-Down DC/DC Controller with Differential Output Sensing
Компонентс Ру Россия	LTC3839IUH#PBF Analog Devices	от 1 040 ₽
Augswan Весь мир	LTC3839IUH#PBF Analog Devices	по запросу
МосЧип Россия	LTC3839EUH#TRPBF Linear Technology	по запросу
727GS Весь мир	LTC3839EUH#PBF Linear Technology	по запросу

Корпус / Упаковка / Маркировка

	LTC3839EUH#PBF	LTC3839EUH#TRPBF	LTC3839IUH#PBF	LTC3839IUH#TRPBF
N	1	2	3	4
Корпус	5x5 QFN-32 Габаритный чертеж корпуса	5x5 QFN-32 Габаритный чертеж корпуса	5x5 QFN-32 Габаритный чертеж корпуса	5x5 QFN-32 Габаритный чертеж корпуса
Код корпуса	UH	UH	UH	UH
Индекс корпуса	05-08-1693	05-08-1693	05-08-1693	05-08-1693
Количество выводов	32	32	32	32

Параметры

Parameters / Models	LTC3839EUH#PBF	LTC3839EUH#TRPBF	LTC3839IUH#PBF	LTC3839IUH#TRPBF
Архитектура	Controlled On-Time Valley Current Mode	Controlled On-Time Valley Current Mode	Controlled On-Time Valley Current Mode	Controlled On-Time Valley Current Mode
Demo Boards	DC1632A	DC1632A	DC1632A	DC1632A
Design Tools	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File
Экспортный контроль	нет	нет	нет	нет
Основные особенности	Differential Remote Sense, External Synchronization, Resistor Set Frequency, PolyPhase, DCR Current Sense, Tracking, Power Good	Differential Remote Sense, External Synchronization, Resistor Set Frequency, PolyPhase, DCR Current Sense, Tracking, Power Good	Differential Remote Sense, External Synchronization, Resistor Set Frequency, PolyPhase, DCR Current Sense, Tracking, Power Good	Differential Remote Sense, External Synchronization, Resistor Set Frequency, PolyPhase, DCR Current Sense, Tracking, Power Good
Тактовая частота, kHz	2000	2000	2000	2000
Frequency Adjust Range	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz
Frequency Sync Range	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz
Integrated Inductor	нет	нет	нет	нет
Ishutdown, мкА	15	15	15	15
Isupply, мА	3	3	3	3
Max Phases	2, 3, 4, 6, 12	2, 3, 4, 6, 12	2, 3, 4, 6, 12	2, 3, 4, 6, 12
Monolithic	нет	нет	нет	нет
Количество выходов	1	1	1	1
Рабочий диапазон температур, °C	от 0 до 85	от 0 до 85	от -40 до 85	от -40 до 85
Выходной ток, A	60	60	60	60
Polyphase	да	да	да	да
Sense Resistor	Rsense, DCR	Rsense, DCR	Rsense, DCR	Rsense, DCR
Switch Current, A	60	60	60	60
Synchronous	да	да	да	да
Topology	Buck	Buck	Buck	Buck
Vin Max, В	38	38	38	38
Vin Min, В	4.5	4.5	4.5	4.5
Vout Max, В	5.5	5.5	5.5	5.5
Vout Maximum	5.5V	5.5V	5.5V	5.5V
Vout Min, В	0.6	0.6	0.6	0.6
Vref Accuracy Over Temp, %	1	1	1	1

Экологический статус

	LTC3839EUH#PBF	LTC3839EUH#TRPBF	LTC3839IUH#PBF	LTC3839IUH#TRPBF
RoHS	Совместим	Совместим	Совместим	Совместим

Статьи

Скачать
2MHz Dual DC/DC Controller Halves Settling Time of Load Release Transients, Features 0.67% Differential VOUT Accuracy and Is Primed for High Step-Down Ratios &mdash LT Journal
PDF, 2.7 Мб, Файл опубликован: 24 апр 2012
Выписка из документа
design features 2MHz Dual DC/DC Controller Halves Settling Time of
Load Release Transients, Features 0.67% Differential VOUT
Accuracy and IsВ Primed for High Step-Down Ratios
Shuo Chen and Terry Groom Electrical conditions once considered extreme are now
the norm. Modern electronic systems demand high
currents and very low voltages that can appear to a
DC/DC converter as an intermittent electrical short. It is
not uncommon for sub-0.9V power supply rails to demand
25A or more. In this environment, tight total differential
regulation accuracy is critical to achieve the demanding
voltage tolerances required to power core processors
and large ASICs. In addition, PCB and component
size constraints have driven up converter operating
frequencies to enable the use of smaller components. VIN
4.5V TO 38V + CIN1
100ВµF CIN2
10ВµF
Г—3 LTspice IV circuits.linear.com/546
VIN 0.1ВµF
3.57k + COUT2
330ВµF
Г—2 SENSE1вЂ“ SENSE2вЂ“ SENSE1+ SENSE2+ BOOST1 BOOST2 0.1ВµF TG1 MT1 3.57k TG2 MT2
DB2 SW1 1ВµF 15k 0.1ВµF DB1 …
Скачать
Dual, Fast, Step-Down Controller's External Reference Input Enables Dynamic Voltage Scaling from 0.4V to 5.5V and 0.3% Total Combined Regulation Accuracy &mdash LT Journal
PDF, 2.8 Мб, Файл опубликован: 10 апр 2013
Выписка из документа
design features Dual, Fast, Step-Down ControllerвЂ™s External Reference Input
Enables Dynamic Voltage Scaling from 0.4V to 5.5V and
0.3% Total Combined Regulation Accuracy
Shuo Chen and Terry Groom Low voltage, high current
systems require accurate
differential regulation. It is
not uncommon for power
supply rails at or below
0.9V to demand 25A or
more, with fast transients
that look like intermittent
electrical shorts to the
power supply rail. Such
systems typically require
power supply regulation
accuracy of less than 1%
regulated DC and 3% in the
face of input transients.
Increasingly, core processors and other
large scale digital ICs (such as ASICs and
FPGAs) require dynamic voltage scalingвЂ”either multiple fixed levels, or a
continuously adjusted reference voltage
using a servo loopвЂ”to deliver power …

Модельный ряд

Серия: LTC3839 (4)

LTC3839EUH#PBF LTC3839EUH#TRPBF LTC3839IUH#PBF LTC3839IUH#TRPBF

Классификация производителя

Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers