L4981BD AC-DC Converters by STMicroelectronics
L4981A: Fixed Frequency Average Current Mode; L4981B: Line Modulated Frequency Average Current Mode
| Status: | Active |
|---|---|
| Series: | L4981 |
| RoHS: | Compliant |
Where to Buy
Prices starting from US$1.49
| Distributor | Stock | ||
|---|---|---|---|
|
RS
from US$2.33
|
No stock
|
Buy Now |
|
Newark Electronics
from US$2.09
|
2,535
in stock
|
Buy Now |
|
element14
from US$1.82
|
2,535
in stock
|
Buy Now |
|
Farnell
from US$1.72
|
2,535
in stock
|
Buy Now |
|
Transfer Multisort Elektronik
from US$2.48
|
318
in stock
|
Buy Now |
|
Avnet Silica
-
|
360
in stock
|
Buy Now |
|
Future Electronics
from US$1.54
|
-
|
Buy Now |
|
Avnet America
from US$1.49
|
-
|
Buy Now |
|
Distrelec
from US$3.64
|
-
|
Buy Now |
|
EBV Elektronik
-
|
-
|
Buy Now |
Features
| PRECISE 2% ON CHIP REFERENCE EXTERNALLY AVAILABLE |
| OVERVOLTAGE, OVERCURRENT PROTECTION |
| SOFT START |
| LOW START-UP CURRENT (0.3mA TYP.) |
| HIGH CURRENT BIPOLAR AND DMOS TOTEM POLE OUTPUT |
| CONTROL BOOST PWM UP TO 0.99P.F. |
| UNIVERSAL INPUT MAINS |
| LIMIT LINE CURRENT DISTORTION TO < 5% |
| AVERAGE CURRENT MODE PWM FOR MINIMUM NOISE SENSITIVITY |
| UNDER VOLTAGE LOCKOUT WITH HYSTERESIS AND PROGRAMMABLE TURN ON THRESHOLD |
| FEED FORWARD LINE AND LOAD REGULATION |
Resources
Product Specifications |
|---|
| DS0071 Power factor corrector |
Presentations |
|---|
| Power Factor Corrector controllers portfolio |
Alternative Descriptions
| Power Factor Corrector, Soic-20 | Newark Electronics |
| POWER FACTOR CORRECTOR, SMD, 4981 | element14 |
| IC: driver | Transfer Multisort Elektronik |
| Power Factor Correction PWM CONTRLR 0.3mA 115KHz 20-Pin SO Tube | Avnet Silica |
| Power Factor Corrector,85-265Vac,L4981BD | RS |
| L4981 Series 19.5 V Very High Power Factor Corrector Pre-Regulator - SOIC-20 | Future Electronics |
| ST PFC IC, SO-20, Tube, 600mW, 300uA | Distrelec |
Frequently Asked Questions
Where can I find additional details, specifications and documents for a L4981BD?
Additional datasheets, footprints and schematics for L4981BD are listed on our Part Details page. You can also find images and similar parts to L4981BD on this page.
What pricing and inventory information can I view?
Distributor pricing and stock information is available for L4981BD on our Product Comparison page. Access via the 'View Pricing & Stock' button to view L4981BD price breaks, MOQs, lead times, inventory and SKUs from distributors.
What category does L4981BD fall under?
The L4981BD is listed under Power Management > AC-DC Converters > PFC Controllers.
Can I view similar or alternative parts?
You can view similar parts to L4981BD when available in the PFC Controllers range under the specifications section at the bottom of the details page.
Who can I contact for technical support of the product?
Submit any questions directly to the customer support team of the distributor listing the product. For the L4981BD you can contact the distributor directly for product support, shipping queries etc.
Is the L4981BD RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.
Which authorised distributors for L4981BD have stock available?
Authorised distributors including Newark Electronics, element14, Farnell, Transfer Multisort Elektronik and Avnet Silica have stock available or on a lead time for L4981BD.
How do I check stock and lead times for all distributors?
Stock availability and lead times will be displayed for L4981BD often in real-time on the comparison pages.
What if I can't find stock of L4981BD?
You can fill out our help required form which you can use to request a quote for L4981BD from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.