Datasheet Linear Technology LT3504IUFD#TRPBF — Даташит

Производитель	Linear Technology
Серия	LT3504
Модель	LT3504IUFD#TRPBF

Понижающий импульсный регулятор Quad 40V / 1A с рабочим циклом 100%

Datasheets

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PDF, 498 Кб, Язык: анг., Файл закачен: 18 сен 2017, Страниц: 24
Quad 40V/1A Step-Down Switching Regulator with 100% Duty Cycle Operation

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Цены

Купить LT3504IUFD#TRPBF на РадиоЛоцман.Цены — от 169 до 1 147 ₽ 31 предложений от 14 поставщиков IC REG BUCK ADJ 1A QD 28-QFN / Conv DC-DC 3.2V to 40V Synchronous Step Down Single-Out 0.8V to 40V 1A...
AllElco Electronics Весь мир	LT3504IUFD#TRPBF Analog Devices	от 169 ₽
Maybo Весь мир	LT3504IUFD#TRPBF Analog Devices	901 ₽
Элитан Россия	LT3504IUFD#TRPBF Analog Devices	1 125 ₽
ЭИК Россия	LT3504IUFD#TRPBF Analog Devices	от 1 141 ₽

Корпус / Упаковка / Маркировка

Корпус	4x5 QFN-28
Код корпуса	UFD
Индекс корпуса	05-08-1712

Параметры

Архитектура	Constant Frequency Current Mode
Demo Boards	DC1207A
Design Tools	LTspice File
Экспортный контроль	нет
Основные особенности	100% Duty Cycle, Resistor Set Frequency, External Synchronization, Anti-Phase Switching, Tracking
Тактовая частота	2200 kHz
Frequency Adjust Range	250kHz - 2.2MHz
Frequency Sync Range	350kHz - 2.2MHz
Integrated Inductor	нет
Ishutdown	0.01 мкА
Isupply	2.7 мА
Monolithic	да
Количество выходов	4
Рабочий диапазон температур	от -40 до 85 °C
Выходной ток	1 A
Output Current 2	1 A
Output Current 3	1 A
Polyphase	нет
Switch Current	1.75 A
Switch Current 2	1.75 A
Switch Current 3	1.75 A
Synchronous	нет
Topology	Buck
Topology 1	Buck
Topology 2	Buck
Topology 3	Buck
Vin Max	40 В
Vin Min	3.2 В
Vout Max	40 В
Vout Max 2	40 В
Vout Max 3	40 В
Vout Maximum	Vin
Vout Min	0.8 В
Vout Min 2	0.8 В
Vout Min 3	0.8 В
Vref Accuracy Over Temp	2 %

Экологический статус

RoHS

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Статьи

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Compact Quad Step-Down Regulator with 100% Duty Cycle Operation Withstands 180V Surges &mdash LT Journal
PDF, 2.9 Мб, Файл опубликован: 10 апр 2013
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Compact Quad Step-Down Regulator with 100% Duty Cycle
Operation Withstands 180V Surges
Jonathan Paolucci Automotive, industrial and distributed applications routinely subject step-down
DC/DC converters to a vast assortment of supply voltage transients. High voltage
power spikes and input voltage dips can destroy sensitive circuits and jeopardize
system reliability. To avoid damage, most applications rely on Tranzorbs or protection
circuits that use MOSFETs as pass elements to suppress input voltage transients.
If an N-channel MOSFET is used for this purpose, some means of providing gate
drive above the input rail is necessary to bias the MOSFET on. Generating this bias
is an undesirable complication that most engineers would prefer to avoid.
The LT3504 is a 4-channel monolithic
step-down regulator designed for 100%
duty cycle operation. Its unique architecture makes available a bias voltage,
which is easily adapted to an N-channel
protection scheme, allowing the LT3504
to operate continuously through overvoltage transients and dropouts down
to 3.2V. Among its many features, the
LT3504 includes output voltage tracking and sequencing, programmable frequency, programmable undervoltage
lockout, and a power good pin to indicate when all outputs are in regulation.
QUAD 1A STEP-DOWN REGULATOR Figure 1 shows the complete application
circuit for a 4-output, 1A step-down regulator operating over a 3.2V to 30V range.
Q1 provides surge protection to 180V.
An on-chip boost regulator generates VSUPPLY …

Модельный ряд

Серия: LT3504 (4)

LT3504EUFD#PBF LT3504EUFD#TRPBF LT3504IUFD#PBF LT3504IUFD#TRPBF

Классификация производителя

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

Варианты написания:

LT3504IUFDTRPBF, LT3504IUFD TRPBF