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MP4078GS-P, LED Driver, Primary-Side Control, Buck-Boost/Flyback, SOIC-8, SMD, 8.4 to 25 V in
Полупроводники - Микросхемы\Микросхемы Управления Питанием\AC - DC Преобразователи
MP4078 is an single-stage offline controller with active power factor correction (PFC) for constant voltage output applications. The device implements primary-side regulation (PSR) control without requiring a secondary feedback circuit or optocoupler for flyback applications. It is also available for non-isolated topologies (e.g. buck-boost). The device achieves ultra-low standby power consumption. Its pulse frequency modulation (PFM) implements a minimum operating frequency under no-load conditions. The MP4078 works in discontinuous conduction mode (DCM) with valley switching for improved efficiency performance The MP4078 operates in constant-on-time (COT) mode to achieve a high power factor across the universal input. It adopts a cascode MOSFET technique to achieve fast start-up with few external components. The MP4078 integrates multiple protection features that greatly enhance system reliability and safety. The MP4078 is available in an SOIC-8 package.
• Primary side control with simple design and minimal external components
• Ultrq low no load power consumption, typically below 50mW with 230VAC
• PSR with good regulation (<±3%), good performance on PF and THD
• Fast transient response
• Novel control scheme with continuous peak current limitation
• Brownout protection and thermal shutdown
• Output short-circuit protection, primary side overcurrent protection and overtemperature protection
• High PF(>0.95) and low THD (<10%)
• Fast start-up by cascode-MOSFET technique
• Typically used for smart LED lighting and front-end pre-regulators
| Количество Выводов | 8вывод(-ов) |
| Максимальная Рабочая Температура | 125°C |
| Максимальное Входное Напряжение | 25В |
| Минимальная Рабочая Температура | -40°C |
| Минимальное Входное Напряжение | 8.4В |
| Монтаж Микросхемы | SMD(Поверхностный Монтаж) |
| Уровень Чувствительности к Влажности (MSL) | MSL 2-1 год |
| Control Features | EN, Frequency Control, Soft Start |
| Fault Protection | Current Limiting, Over Temperature, Over Voltage, Short Circuit |
| Internal Switch(s) | No |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C(TJ) |
| Output Isolation | Either |
| Package / Case | 8-SOIC(0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| Topology | Buck-Boost, Flyback |
| Voltage - Start Up | 7.9 V |
| Voltage - Supply (Vcc/Vdd) | 8.4V ~ 25V |
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