L4981A
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- Mfr.Part #
- L4981A
- Manufacturer
- STMicroelectronics
- Package / Case
- 20-SOIC (0.295, 7.50mm Width)
- Datasheet
- Download
- Description
- IC PFC CTR AV CURR 100KHZ 20DIP
- Stock
- 1
- In Stock ：
- 1
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- Manufacturer :
- STMicroelectronics
- Product Category :
- PFC (Power Factor Correction)
- Weight :
- 266.712314mg
- Lifecycle Status :
- ACTIVE (Last Updated: 7 months ago)
- Input Voltage-Nom :
- 18V
- Pin Count :
- 20
- Mounting Type :
- Surface Mount
- Moisture Sensitivity Level (MSL) :
- 3 (168 Hours)
- Package / Case :
- 20-SOIC (0.295, 7.50mm Width)
- Number of Pins :
- 20
- Nominal Input Voltage :
- 19.5V
- Frequency :
- 100kHz
- Peak Reflow Temperature (Cel) :
- 260
- Terminal Finish :
- Nickel/Palladium/Gold (Ni/Pd/Au)
- Analog IC - Other Type :
- POWER FACTOR CONTROLLER
- Number of Terminations :
- 20
- Terminal Position :
- Dual
- Base Part Number :
- L4981
- Radiation Hardening :
- No
- Terminal Form :
- Gull wing
- JESD-609 Code :
- e4
- Length :
- 13mm
- Mode :
- Average Current
- Output Current :
- 1.5A
- Current - Startup :
- 100μA
- Number of Outputs :
- 3
- Lead Free :
- Lead Free
- Output Voltage :
- 800mV
- ECCN Code :
- EAR99
- Height :
- 2.35mm
- Control Technique :
- PULSE WIDTH MODULATION
- Packaging :
- Tube
- Factory Lead Time :
- 12 Weeks
- RoHS Status :
- Non-RoHS Compliant
- Operating Temperature :
- -40°C~125°C
- Number of Functions :
- 1
- Voltage - Supply :
- 14.5V~19.5V
- REACH SVHC :
- No SVHC
- Mount :
- Surface Mount
- Terminal Pitch :
- 1.27mm
- Max Supply Current :
- 16mA
- Switcher Configuration :
- Single
- Operating Supply Current :
- 12mA
- Time@Peak Reflow Temperature-Max (s) :
- 30
- Width :
- 7.6mm
- Datasheets
- L4981A
PFC STMicroelectronics L4981A Overview
The L4981A from STMicroelectronics is a highly efficient integrated circuit designed for Power Factor Correction (PFC) applications. Tailored to optimize the power factor of AC-DC power systems, this IC minimizes power loss and enhances the reliability of electronic systems. Operating at up to 100 kHz, the L4981A enables designs that are compact yet robust, making it an essential component for modern high-performance power supplies. Its integration into systems contributes to meeting global energy efficiency standards, particularly beneficial for manufacturers aiming to enhance their product's market appeal and compliance with environmental regulations.
L4981A Features
This PFC controller includes features such as average current mode control for accurate power regulation, under-voltage lockout for system protection, and programmable output overvoltage protection, ensuring safe operation under diverse conditions. Its capability to operate up to 100 kHz allows for smaller passive components, resulting in reduced size and cost of the overall power supply design.
L4981A Applications
- Consumer Electronics: Used in TVs, computers, and other consumer electronics, the L4981A helps in maintaining efficient power usage and reducing operational costs by improving the power factor of these devices.
- Industrial Systems: Integrates into industrial power supplies to ensure stable and efficient power delivery across various loads, crucial for maintaining the performance and longevity of industrial machinery.
- Telecommunications Equipment: Provides power factor correction in power supplies for telecommunications equipment, ensuring minimal energy loss and enhanced reliability in communication infrastructures.
- Lighting Systems: Employed in lighting ballasts and drivers to optimize energy usage and improve the overall efficiency of lighting systems, which is vital for both commercial and residential settings.
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