Регулятор для AC-DC - [SOIC-8-3.9]; Топология: Buck, Boost, Flyback, Not-Isolated; Uпробоя: 700 В; Iмакс: 170 мА; Pном: 12 мВт; Fперекл: 66 кГц; Скважность: 72 %
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Технические характеристики

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Корпус SO-8 SOIC8
Топология Buck, Boost, Flyback, Not-Isolated
Максимальное напряжение силового ключа
Максимальный ток силового ключа
Номинальная мощность
Максимальная частота преобразователя
Максимальная скважность преобразователя
Ток собственного потребления
Примечание Lowest Component Count, Energy-Ef?cient Off-Line Switcher IC
Рабочая температура
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Аналоги 1

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Тип Наименование Корпус Упаковка i Топология Uпробоя Iмакс Pном F преобр Скважность Iпотр Примечание T раб Карточка
P= LNK304DN-TL (PI) SO-8 SOIC8 1 шт

Файлы 1

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LNK302/304-306 LinkSwitch-TN Family ® Lowest Component Count, Energy-Efficient Off-Line Switcher IC Product Highlights Cost Effective Linear/Cap Dropper Replacement • Lowest cost and component count buck converter solution • Fully integrated auto-restart for short-circuit and open loop fault protection – saves external component costs • LNK302 uses a simplified controller without auto-restart for very low system cost • 66 kHz operation with accurate current limit – allows low cost off-the-shelf 1 mH inductor for up to 120 mA output current • Tight tolerances and negligible temperature variation • High breakdown voltage of 700 V provides excellent input surge withstand • Frequency jittering dramatically reduces EMI (~10 dB) – minimizes EMI filter cost • High thermal shutdown temperature (+135 °C minimum) Much Higher Performance over Discrete Buck and Passive Solutions • Supports buck, buck-boost and flyback topologies • System level thermal overload, output short-circuit and open control loop protection • Excellent line and load regulation even with typical configuration • High bandwidth provides fast turn-on with no overshoot • Current limit operation rejects line ripple • Universal input voltage range (85 VAC to 265 VAC) • Built-in current limit and hysteretic thermal protection • Higher efficiency than passive solutions • Higher power factor than capacitor-fed solutions • Entirely manufacturable in SMD EcoSmart – Extremely Energy Efficient • Consumes typically only 50/80 mW in self-powered buck topology at 115/230 VAC input with no load (opto feedback) • Consumes typically only 7/12 mW in flyback topology with external bias at 115/230 VAC input with no load • Meets California Energy Commission (CEC), Energy Star, and EU requirements ® Applications • Appliances and timers • LED drivers and industrial controls Description LinkSwitch-TN is specifically designed to replace all linear and capacitor-fed (cap dropper) non-isolated power supplies in the under 360 mA output current range at equal system cost while offering much higher performance and energy efficiency. FB D + Wide Range HV DC Input BP S + DC Output LinkSwitch-TN PI-3492-111903 Figure 1. Typical Buck Converter Application (See Application Examples Section for Other Circuit Configurations). OUTPUT CURRENT TABLE1 PRODUCT4 LNK302P/G/D 230 VAC ±15% MDCM 2 CCM 3 85-265 VAC MDCM2 CCM3 80 mA 63 mA 80 mA 63 mA LNK304P/G/D 120 mA 170 mA 120 mA 170 mA LNK305P/G/D 175 mA 280 mA 175 mA 280 mA LNK306P/G/D 225 mA 360 mA 225 mA 360 mA Table 1. Output Current Table. Notes: 1. Typical output current in a non-isolated buck converter. Output power capability depends on respective output voltage. See Key Applications Considerations Section for complete description of assumptions, including fully discontinuous conduction mode (DCM) operation. 2. Mostly discontinuous conduction mode. 3. Continuous conduction mode. 4. Packages: P: DIP-8B, G: SMD-8B, D: SO-8C. LinkSwitch-TN devices integrate a 700 V power MOSFET, oscillator, simple On/Off control scheme, a high voltage switched current source, frequency jittering, cycle-by-cycle current limit and thermal shutdown circuitry onto a monolithic IC. The startup and operating power are derived directly from the voltage on the DRAIN pin, eliminating the need for a bias supply and associated circuitry in buck or flyback converters. The fully integrated auto-restart circuit in the LNK304-306 safely limits output power during fault conditions such as short-circuit or open loop, reducing component count and system-level load protection cost. A local supply provided by the IC allows use of a non-safety graded optocoupler acting as a level shifter to further enhance line and load regulation performance in buck and buck-boost converters, if required. November 2008 PDF
Документация на серию LNK304 

LNK302_304-306 rev I.indd

Дата модификации: 19.11.2008

Размер: 706.5 Кб

20 стр.

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