⚠ All product names, trademarks, brands, and logos on this site are the property of their respective owners. Their use is for identification purposes only and does not imply any affiliation or authorization from the rights holders. We are not authorized dealers or distributors of the brand. The warranty is provided by us, not the original manufacturer.
L4981
L4981 - Brand New STMicroelectronics IC Chips
Credit Card - One-month free return and one year warranty.
- Full or Partial Refund, if the item is not as described
- Full Refund if you don't receive your order
DESCRIPTION
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 con
sumption.
The L4981 can be easily used in systems with mains voltages between 85V to
265V without any
line switch. This new PFC offers the possibility to work at fixed frequency
(L4981A) or modulated
frequency (L4981B) optimizing the size of the in put filter; both the
operating frequency modes
working with an average current mode PWM controller, maintaining sinusoidal
line current without
slope compensation.
■ CONTROL BOOST PWM UP TO 0.99P.F.
■ LIMIT LINE CURRENT DISTORTION TO < 5%
■ UNIVERSAL INPUT MAINS
■ FEED FORWARD LINE AND LOAD REGULATION
■ AVERAGE CURRENT MODE PWM FOR MINIMUM NOISE SENSITIVITY
■ HIGH CURRENT BIPOLAR AND DMOS TOTEM POLE OUTPUT
■ LOW START-UP CURRENT (0.3mA TYP.)
■ UNDER VOLTAGE LOCKOUT WITH HYSTERESIS AND PROGRAMMABLE TURN ON THRESHOLD
■ OVERVOLTAGE, OVERCURRENT PROTECTION
■ PRECISE 2% ON CHIP REFERENCE EXTERNALLY AVAILABLE
■ SOFT START
Shipping
| First item | Additional item | Service | Description |
|---|---|---|---|
| $0.00 | Free | Free Shipping | Estimated 15-30 business days via Registered Air Mail or others |
| $27.50 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
| $0.00 | Free | Buyer cooperating carrier | Using buyer's cooperating carrier. Buyer should create a shipping label and share it to us. And then we will call carrier for pickup |
| $38.00 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
Delivery
- The transportation time may be delayed due to customs clearance, local holidays or abnormal events.
- The estimated time is based on the fastest speed provided by commercial couriers (DHL, FedEx, UPS etc).
- The estimated time does not include the lead time of the item. The lead time of most items is 2–5 business days. If more than 5 working days are needed, we will manually confirm with you.
| Flag | Country | Express Delivery | Standard Delivery |
|---|---|---|---|
 | United States | 3 - 5 days | 10-15 days |
 | Canada | 3 - 5 days | 10-20 days |
 | Mexico | 3 - 5 days | 10-17 days |
 | Germany | 3 - 5 days | 10-12 days |
 | Italy | 3 - 5 days | 10-15 days |
 | United Kingdom | 3 - 5 days | 10-12 days |
Estimated Delivery
This item requires 2-5 business days for processing before shipping after payment is confirmed. And depending on the destination and shipping method.
Return Policy
| Return window | Refund type | Return shipping |
|---|---|---|
| 60 days after receiving item | Money Back or Replacement | Buyer pays for return shipping |
电子元器件与工控产品的真实买家评价
In Stock 19-22/R6G6C-A01/2T
19-22/R6G6C-A01/2T - Brand New EVERLIGHT IC Chips
In Stock 216T9NGBGA13FH
216T9NGBGA13FH - Brand New ATI IC Chips
In Stock 26.000000MHZ
26.000000MHZ - Brand New TXC IC Chips
In Stock 2N3819
2N3819 - Brand New NTE Electronics IC Chips
In Stock 2SA1460
2SA1460 - Brand New NEC IC Chips
In Stock 2SC1945
2SC1945 - Brand New MITSUBISHI IC Chips
In Stock 2SC3733-K
2SC3733-K - Brand New NEC IC Chips
In Stock 2SJ179
2SJ179 - Brand New STMicroelectronics IC Chips
In Stock 2SK170-BL
2SK170-BL - Brand New TOSHIBA IC Chips
In Stock 2SK2647-01MR
2SK2647-01MR - Brand New FUJITSU IC Chips
