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L4981AD013TR

L4981AD013TR

Active
STMicroelectronics

L4981A: FIXED FREQUENCY AVERAGE CURRENT MODE; L4981B: LINE MODULATED FREQUENCY AVERAGE CURRENT MODE

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L4981AD013TR

L4981AD013TR

Active
STMicroelectronics

L4981A: FIXED FREQUENCY AVERAGE CURRENT MODE; L4981B: LINE MODULATED FREQUENCY AVERAGE CURRENT MODE

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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.

Technical Specifications

Parameters and characteristics for this part

SpecificationL4981AD013TR
Current - Startup100 µA
Frequency - Switching100 kHz
ModeAverage Current
Mounting TypeSurface Mount
Operating Temperature (Max)125 °C
Operating Temperature (Min)-40 °C
Package Length0.295 in
Package Name20-SOIC, 20-SO
Package Width7.5 mm
Voltage - Supply (Maximum)19.5 V
Voltage - Supply (Minimum)14.5 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

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CAD

3D models and CAD resources for this part