Datasheet Linear Technology LTC3861-1 — Даташит

Производитель	Linear Technology
Серия	LTC3861-1

Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Accurate Current Sharing

Datasheets

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Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Accurate Current Sharing

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Цены

Купить LTC3861 на РадиоЛоцман.Цены — от 261 до 1 593 ₽ 33 предложений от 18 поставщиков IC: PMIC; преобразователь DC/DC; Uвх: 3÷24ВDC; QFN36; Ch: 1
EIS Components Весь мир	LTC3861EUHE#PBF Analog Devices	261 ₽
Akcel Весь мир	LTC3861IUHE#TRPBF Analog Devices	от 284 ₽
Vigor Components Весь мир	LTC3861IUH-1 Linear Technology	от 402 ₽
ТаймЧипс Россия	LTC3861EUHE#TRPBF Linear Technology	по запросу

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

Корпус / Упаковка / Маркировка

	LTC3861EUH-1#PBF	LTC3861EUH-1#TRPBF	LTC3861IUH-1#PBF	LTC3861IUH-1#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	LTC3861EUH-1#PBF	LTC3861EUH-1#TRPBF	LTC3861IUH-1#PBF	LTC3861IUH-1#TRPBF
Архитектура	Constant Frequency Voltage Mode	Constant Frequency Voltage Mode	Constant Frequency Voltage Mode	Constant Frequency Voltage Mode
Design Tools	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model
Экспортный контроль	нет	нет	нет	нет
Основные особенности	PolyPhase, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, Tracking, Soft Start	PolyPhase, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, Tracking, Soft Start	PolyPhase, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, Tracking, Soft Start	PolyPhase, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, Tracking, Soft Start
Тактовая частота, kHz	2250	2250	2250	2250
Frequency Adjust Range	Up to 2.25MHz	Up to 2.25MHz	Up to 2.25MHz	Up to 2.25MHz
Frequency Sync Range	Up to 2.25MHz	Up to 2.25MHz	Up to 2.25MHz	Up to 2.25MHz
Integrated Inductor	нет	нет	нет	нет
Ishutdown, мкА	50	50	50	50
Isupply, мА	30	30	30	30
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 -40 до 85	от -40 до 85
Выходной ток, A	40	40	40	40
Output Current 2, A	40	40	40	40
Polyphase	да	да	да	да
Sense Resistor	Rsense, DCR	Rsense, DCR	Rsense, DCR	Rsense, DCR
Switch Current, A	40	40	40	40
Switch Current 2, A	40	40	40	40
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	24	24	24	24
Vin Min, В	3	3	3	3
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, %	0.75	0.75	0.75	0.75

Экологический статус

	LTC3861EUH-1#PBF	LTC3861EUH-1#TRPBF	LTC3861IUH-1#PBF	LTC3861IUH-1#TRPBF
RoHS	Совместим	Совместим	Совместим	Совместим

Application Notes

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Modeling and Loop Compensation Design of Switching Mode Power Supplies &mdash AN149
PDF, 1.4 Мб, Файл опубликован: 23 мар 2015
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Application Note 149
January 2015
Modeling and Loop Compensation Design of
Switching Mode Power Supplies
Henry J. Zhang
Introduction Identifying The Problem TodayвЂ™s electronic systems are becoming more and more
complex, with an increasing number of power rails and
supplies. To achieve optimum power solution density,
reliability and cost, often system designers need to design
their own power solutions, instead of just using commercial power supply bricks. Designing and optimizing high
performance switching mode power supplies is becoming
a more frequent and challenging task. A well-designed switching mode power supply (SMPS)
must be quiet, both electrically and acoustically. An undercompensated system may result in unstable operations.
Typical symptoms of an unstable power supply include:
audible noise from the magnetic components or ceramic
capacitors, jittering in the switching waveforms, oscillation
of output voltage, overheating of power FETs and so on. Power supply loop compensation design is usually
viewed as a difficult task, especially for inexperienced
supply designers. Practical compensation design typically
involves numerous iterations on the value adjustment
of the compensation components. This is not only time
consuming, but is also inaccurate in a complicated
system whose supply bandwidth and stability margin …

Модельный ряд

Серия: LTC3861-1 (4)

LTC3861EUH-1#PBF LTC3861EUH-1#TRPBF LTC3861IUH-1#PBF LTC3861IUH-1#TRPBF

Классификация производителя

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