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STMicroelectronics Power Factor Controller IC 115 kHz 20-Pin SOIC 2.5-19.5V L4981AD
Specifications
| Country of Origin | India |
|---|---|
| Brand | STMicroelectronics |
| Height | 2.35mm |
| Length | 13mm |
| Model | L4981AD |
| Mount Type | Surface |
| Maximum Operating Temperature | 125°C |
| Package Type | SOIC |
| Sub Type | Power Factor Controller |
| Minimum Operating Temperature | -40°C |
| Switching Frequency | 115kHz |
| Pin Count | 20 |
| Maximum Supply Voltage | 19.5V |
| Minimum Supply Voltage | 2.5V |
| Supply Current | 16mA |
| Start-up Supply Current | 300μA |
| Maximum Source Current | 10mA |
| Maximum Sink Current | 20mA |
Key Features
- Operates at switching frequency of 115 kHz for optimized power management.
- Supports supply voltage range from 2.5 V minimum up to 19.5 V maximum.
- Surface mount device in a compact SOIC 20-pin package.
- Maximum source current of 10 mA and sink current of 20 mA for control flexibility.
- Operating temperature range from -40°C to 125°C ensuring wide environmental compatibility.
- Low start-up supply current of 300 μA for energy-efficient operation.
- Designed to improve SMPS robustness with embedded protection features.
- Applicable in transition and continuous current modes for wide-range mains operation.
Product Description
STMicroelectronics L4981AD is a power factor controller integrated circuit designed for power factor correction in switched-mode power supplies (SMPS). Operating at a switching frequency of 115 kHz, this controller IC supports a supply voltage range between 2.5 V to 19.5 V and features a compact 20-pin SOIC surface mount package with dimensions of 13 mm length and 2.35 mm height, making it suitable for compact and efficient PCB designs.
The L4981AD incorporates advanced protection features improving SMPS robustness and reducing external component count. It effectively operates in both transition mode and continuous current mode, enabling wide-range mains compatibility. Its low start-up current of 300 μA and supply current of 16 mA make it energy efficient while providing up to 10 mA source and 20 mA sink currents for versatile control signals.
Designed for reliable industrial applications, it functions across a broad operating temperature range from -40°C up to 125°C, ensuring stable performance in harsh environments. This IC does not include automotive grade certification but is highly suited for general power management and power correction tasks in electronics assemblies.
Key applications include AC/DC power factor correction circuits where maintaining optimal power quality and efficiency is essential. This device aids manufacturers in producing more compact, reliable, and energy-efficient power supplies for various electronic equipment.
Operates at switching frequency of 115 kHz for precise power factor control. Wide supply voltage range from 2.5 V to 19.5 V for versatile applications. Low start-up supply current of 300 μA reduces standby power losses. Compact 20-pin SOIC surface mount package ideal for dense PCB layouts.
Robust design enables operation over -40°C to 125°C temperature range. Advanced protection features enhance SMPS reliability and compactness. Supports transition and continuous current modes for wide mains compatibility.
The package contains one STMicroelectronics L4981AD Power Factor Controller IC, ready for insertion into power management assemblies. It is recommended for use in industrial, commercial, and electronic manufacturing sectors requiring effective power factor correction solutions.
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Frequently Asked Questions
The L4981AD operates at a switching frequency of 115 kHz, which is optimized for power management applications.
It supports a supply voltage range from 2.5 V to 19.5 V, making it versatile for various applications.
This model comes in a compact 20-pin SOIC package with a length of 13 mm and a height of 2.35 mm.
The maximum source current is 10 mA, while the maximum sink current is 20 mA, allowing for flexible control signal management.
The L4981AD operates within a temperature range of -40°C to 125°C, ensuring compatibility in various environmental conditions.
It features a low start-up supply current of 300 μA, contributing to energy-efficient operation.
This model is designed for surface mounting, suitable for compact PCB layouts.
It is applicable in AC/DC power factor correction circuits, where maintaining optimal power quality and efficiency is essential.
The L4981AD incorporates advanced protection features that enhance the robustness of switched-mode power supplies (SMPS).
The supply current during operation is 16 mA, which is efficient for power management tasks.
This IC does not include automotive grade certification but is suitable for general power management tasks in electronics.
The L4981AD is manufactured in India.
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