L4981B
ObsoleteIC PFC CTR AV CURR 100KHZ 20DIP
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L4981B
ObsoleteIC PFC CTR AV CURR 100KHZ 20DIP
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Technical Specifications
Parameters and characteristics for this part
| Specification | L4981B |
|---|---|
| Current - Startup | 100 µA |
| Frequency - Switching | 100 kHz |
| Mounting Type | Through Hole |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 20-DIP |
| Package / Case | 7.62 mm |
| Package / Case | 0.3 in |
| Supplier Device Package | 20-DIP |
| Voltage - Supply [Max] | 19.5 V |
| Voltage - Supply [Min] | 14.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
Description
General part information
L4981 Series
The L4981 I.C. provides the necessary features to achieve a very high power factor up to 0.99.
Realized in BCD 60II technology this power factor corrector (PFC) pre-regulator contains all the control functions for designing a high efficiency-mode power supply with sinusoidal line current consumption.
The L4981 can be easily used in systems with mains voltages between 85V to 265V without anyline switch. This new PFC offers the possibility to work at fixed frequency (L4981A) or modulated frequency (L4981B) optimizing the size of the input filter; both the operating frequency modes working with an average current mode PWM controller, maintaining sinusoidal line current without slope compensation.
Documents
Technical documentation and resources