This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.

Images are for reference only,

See Technical Specifications

L4984D +BOM

CCM PFC CONTROLLER

Manufacturer:

STMicroelectronics, Inc
Mfr.Part #:

L4984D
Datasheet:

L4984D Datasheet (PDF)
Mode:

Continuous Conduction (CCM)
Current - Startup:

65 µA
Voltage - Supply:

10.3V ~ 22.5V
Operating Temperature:

-40°C ~ 150°C
EDA/CAD Models:

Request Free CAD Models for L4984D

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

L4984D General Description

The L4984D is a current-mode PFC controller operating with line-modulated fixed-off-time (LM-FOT) control. A proprietary LM-FOT modulator allows fixed-frequency operation for boost PFC converters as long as they are operated in CCM (continuous conduction mode).The chip comes in a 10-pin SO package and offers a low-cost solution for CCM-operated boost PFC pre-regulators in EN61000-3-2 and JEIDA-MITI compliant applications, in a power range that spans from few hundred W to 1 KW and above.The highly linear multiplier includes a special circuit, able to reduce the crossover distortion of the AC input current, that allows wide-range-mains operation with a reasonably low THD, even over a large load range.The output voltage is controlled by means of a voltage-mode error amplifier and an accurate (1% at Tj = 25 °C) internal voltage reference. Loop stability is optimized by the voltage feedforward function (1/V2correction), which in this IC uses a proprietary technique that also significantly improves line transient response in the case of mains drops and surges (“bi-directional”).The device features low consumption and includes a disable function suitable for IC remote on/off. These features allow use in applications which also comply with the latest energy saving requirements (Blue Angel, ENERGY STAR, Energy 2000, etc.).In addition to overvoltage protection able to keep the output voltage under control during transient conditions, the IC is also provided with protection against feedback loop failures or erroneous settings. Other onboard protection functions allow that brownout conditions and boost inductor saturation can be safely handled. Soft-start limits peak current and extends off-time to prevent flux runaway in the initial cycles.The totem pole output stage, capable of 600 mA source and 800 mA sink current, is suitable for big MOSFETs or IGBT drive.350 W CCM PFC pre-regulator demonstration board .

Key Features

Line-modulated fixed-off-time (LM-FOT) control of CCM-operated PFC pre-regulators
Proprietary LM-FOT modulator for nearly fixed-frequency operation
Proprietary multiplier design for minimum THD of AC input current
Fast “bi-directional” input voltage feedforward (1/V²correction)
Accurate adjustable output overvoltage protection
Protection against feedback loop failure (latched shutdown)
Inductor saturation protection
AC brownout detection
Digital leading-edge blanking on current sense
Soft-start
1% (at Tj = 25 °C) internal reference voltage
- 600 / + 800 mA totem pole gate driver with active pull-down during UVLO and voltage clamp
SSOP10 package

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)PFC (Power Factor Correction)	Series	-
Mode	Continuous Conduction (CCM)	Frequency - Switching	-
Current - Startup	65 µA	Voltage - Supply	10.3V ~ 22.5V
Operating Temperature	-40°C ~ 150°C	Mounting Type	Surface Mount
Base Product Number	L4984	feature-type	Power Factor Correction Controller
feature-maximum-power-dissipation-mw		feature-packaging	Tube
feature-rad-hard		feature-pin-count	10
feature-cecc-qualified	No	feature-esd-protection
feature-escc-qualified		feature-military	No
feature-aec-qualified	No	feature-aec-qualified-number
feature-auto-motive	No	feature-p-pap	No
feature-eccn-code	EAR99	feature-svhc	Yes
feature-svhc-exceeds-threshold	No

Service Policies and Others

After-Sales & Settlement Related

Payment

Payment Method

TT/Wire Transfer

Paypal

Western Union

Money Gram

For alternative payment channels, please reach out to us at:

[email protected]

Shipping & Packing

Shipping Method

Fedex

UPS

DHL

NTN

Packing

AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

Warranty

365-Day Product

Quality Guarantee

We promise to provide 365 days quality assurance service for all our products.

Ratings and Reviews

D**n 05/10/2023

Goods as described, good trader, fast delivery

E**y 04/03/2023

Transistors have reached, not yet checked, but in appearance all such received, i will check the review

J**b 10/11/2022

Not yet tested but all other products from this store are perfect

C**a 06/20/2020

Trnschit really lays his ears, how much hurt he did not check-well, nafig. Punches at 1 cm more than the norms, at 1.5 cm there are arc and punches if there is iron. used power supply 5 v 1a. Minus that came to another zip code around the city (most likely a. mail error). It was about a month and a half.