Datasheet Linear Technology LTC3811 — Даташит

Производитель	Linear Technology
Серия	LTC3811

High Speed Dual, Multiphase Step-Down DC/DC Controller

Datasheets

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PDF, 552 Кб, Язык: анг., Файл закачен: 23 сен 2017, Страниц: 48
High Speed Dual, Multiphase Step-Down DC/DC Controller

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Цены

Купить LTC3811 на РадиоЛоцман.Цены — от 164 до 1 287 ₽ 37 предложений от 23 поставщиков IC: PMIC; преобразователь DC/DC; Uвх: 4,5÷30ВDC; Uвых: 0,6÷3,3ВDC
AllElco Electronics Весь мир	LTC3811EUHF#TRPBF Analog Devices	164 ₽
ЧипСити Россия	LTC3811EUHF#TRPBF Linear Technology	338 ₽
ЭИК Россия	LTC3811EUHF#PBF Analog Devices	от 1 111 ₽
ТаймЧипс Россия	LTC3811EG#TRPBF Linear Technology	по запросу

Корпус / Упаковка / Маркировка

	LTC3811EG#PBF	LTC3811EG#TRPBF	LTC3811EUHF#PBF	LTC3811EUHF#TRPBF
N	1	2	3	4
Корпус	SSOP-36 Габаритный чертеж корпуса	SSOP-36 Габаритный чертеж корпуса	5x7 QFN-38 Габаритный чертеж корпуса	5x7 QFN-38 Габаритный чертеж корпуса
Код корпуса	G	G	UHF	UHF
Индекс корпуса	05-08-1640 (G36)	05-08-1640 (G36)	05-08-1701	05-08-1701
Количество выводов	36	36	38	38

Параметры

Parameters / Models	LTC3811EG#PBF	LTC3811EG#TRPBF	LTC3811EUHF#PBF	LTC3811EUHF#TRPBF
Архитектура	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC971A	DC971A	DC971A	DC971A
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Экспортный контроль	нет	нет	нет	нет
Основные особенности	PolyPhase, Differential Remote Sense, DCR Current Sense, Power Good, Tracking, Sequencing, Selectable Switching Frequency, External Synchronization, PLL	PolyPhase, Differential Remote Sense, DCR Current Sense, Power Good, Tracking, Sequencing, Selectable Switching Frequency, External Synchronization, PLL	PolyPhase, Differential Remote Sense, DCR Current Sense, Power Good, Tracking, Sequencing, Selectable Switching Frequency, External Synchronization, PLL	PolyPhase, Differential Remote Sense, DCR Current Sense, Power Good, Tracking, Sequencing, Selectable Switching Frequency, External Synchronization, PLL
Тактовая частота, kHz	500	500	500	500
Frequency Adjust Range	250kHz to 750kHz	250kHz to 750kHz	250kHz to 750kHz	250kHz to 750kHz
Frequency Sync Range	150kHz to 900kHz	150kHz to 900kHz	150kHz to 900kHz	150kHz to 900kHz
Integrated Inductor	нет	нет	нет	нет
Ishutdown, мкА	20	20	20	20
Isupply, мА	10.5	10.5	10.5	10.5
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	2	2	2	2
Рабочий диапазон температур, °C	от 0 до 85	от 0 до 85	от 0 до 85	от 0 до 85
Выходной ток, A	20	20	20	20
Output Current 2, A	20	20	20	20
Polyphase	да	да	да	да
Sense Resistor	Rsense, DCR	Rsense, DCR	Rsense, DCR	Rsense, DCR
Switch Current, A	20	20	20	20
Switch Current 2, A	20	20	20	20
Synchronous	да	да	да	да
Topology	Buck	Buck	Buck	Buck
Topology 1	Buck	Buck	Buck	Buck
Topology 2	Buck	Buck	Buck	Buck
Vin Max, В	30	30	30	30
Vin Min, В	4.5	4.5	4.5	4.5
Vout Max, В	3.3	3.3	3.3	3.3
Vout Maximum	3.3V	3.3V	3.3V	3.3V
Vout Min, В	0.6	0.6	0.6	0.6
Vout Min 2, В	0.8	0.8	0.8	0.8
Vref Accuracy Over Temp, %	0.5	0.5	0.5	0.5

Экологический статус

	LTC3811EG#PBF	LTC3811EG#TRPBF	LTC3811EUHF#PBF	LTC3811EUHF#TRPBF
RoHS	Совместим	Совместим	Совместим	Совместим

Design Notes

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Multiphase DC/DC Controller Pushes Accuracy and Bandwidth Limits &mdash DN434
PDF, 106 Кб, Файл опубликован: 15 янв 2008
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advertisement Multiphase DC/DC Controller Pushes Accuracy and Bandwidth
Limits
Design Note 434
Tick Houk
In addition to high accuracy, the LTC3811вЂ™s low minimum on-time (typically 65ns) allows users to convert a
12V input to a 1V output at switching frequencies up to
750kHz, optimizing load transient response and reducing
the solution size. Introduction
Speed and accuracy donвЂ™t always go hand-in-hand
in DC/DC converter systemsвЂ”that is, until now. The
LTC3811 is a dual output, п¬Ѓxed frequency current mode
DC/DC switching regulator controller designed for one of
todayвЂ™s most demanding power supply applications: high
current, low voltage processor core supplies. A Dual Output, 2-Phase Supply with Differential
Remote Sensing and Inductor DCR Sensing
Figure 1 illustrates a dual output supply using the LTC3811.
The 1.5V, 15A output is regulated using the integrated
differential remote sense ampliп¬Ѓer and tracks the output of
channel 1 during start-up. Both outputs use DCR sensing
in order to maximize efп¬Ѓciency and operate 180В° out of With supply current requirements in excess of 100A
and supply voltages as low as 1V, every milliohm of
PCB resistance and every millivolt of IR drop count. The
LTC3811 has an output voltage tolerance of В±0.5% over …

Модельный ряд

Серия: LTC3811 (4)

LTC3811EG#PBF LTC3811EG#TRPBF LTC3811EUHF#PBF LTC3811EUHF#TRPBF

Классификация производителя

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