L4981B
STMicroelectronics
STMicroelectronics
IC PFC CTR AV CURR 100KHZ 20DIP
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STMicroelectronics's L4981B represents the next generation of Power Factor Correction ICs, offering unparalleled performance in AC/DC power conversion systems. This PMIC integrates critical PFC functionality with intelligent control algorithms to achieve power factors exceeding 0.99. The device features adaptive switching frequency control that automatically optimizes efficiency across varying load conditions. With its compact design and minimal external component requirements, the L4981B simplifies power supply design while reducing overall system costs. Primary applications include telecom power systems, medical equipment power supplies, and industrial automation controllers. The IC's robust design makes it ideal for harsh environments like oil field equipment and railway power systems.
Specifications
- Product Status: Obsolete
- Mode: Average Current
- Frequency - Switching: 100kHz
- Current - Startup: 100 µA
- Voltage - Supply: 14.5V ~ 19.5V
- Operating Temperature: -40°C ~ 125°C
- Mounting Type: Through Hole
- Package / Case: 20-DIP (0.300", 7.62mm)
- Supplier Device Package: 20-DIP
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