STMicroelectronics L4985ATR
Manufacturer No:
L4985ATR
Manufacturer:
STMicroelectronics
Package:
Description:
Continuous conduction mode (CCM) PFC controller with high voltage startup
Quantity:
In Stock :9475
Looking for price or availability? Send us an RFQ and our sales team will respond quickly.
Shipping & Availability
Fast worldwide shipping via DHL, FedEx, UPS, and EMS.
Shipped from：HK Warehouse
Expected Shipping：Fri, May 29 - Sat, May 30, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
Payment
We support multiple secure payment methods including PayPal, Visa, MasterCard, and American Express. All transactions are protected with advanced encryption to ensure secure and reliable payments.
Authenticity Guarantee
All components supplied by Aichiplink are sourced from trusted global suppliers and verified through strict in-house inspection and quality control procedures.
Quality Assurance
Certified in-house inspection and testing facilities ensure all components meet internationally recognized quality standards.
User Guide
Aichiplink operates certified in-house inspection and testing facilities to ensure all electronic components meet internationally recognized quality and compliance standards. Our quality management system is verified through ISO 9001 certification and industry-standard inspection procedures.
PURCHASE
Please verify all part numbers, quantities, and packaging preferences before placing your order. If substitutions are acceptable, please indicate this clearly. For time-sensitive projects, confirm estimated delivery dates and stock availability in advance. Once submitted, changes or cancellations may not be possible, especially for items marked as non-cancellable/non-returnable (NCNR). For international shipments, please ensure all import documentation is complete and accurate to avoid delays.
MEANS OF PAYMENTFor your convenience, we accept multiple payment methods in USD, including PayPal, Credit Card, and Wire Transfer. Net terms may be available for qualified customers upon approval.
RFQ (REQUEST FOR QUOTATIONS)Please ensure the part numbers and quantities are accurate and complete when submitting your RFQ.
Provide target prices and acceptable alternatives, if any, to speed up the quotation process.
Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.
Step1：Prepare product
Step2：Desiccant Protection
Step3：Vacuum Packaging
Step4：Individual Package
Step5：Anti-collision Filling
Step6：Packaging Box
SHIPPING COST
1. Shipping starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).
2. Some specific products need to reach the minimum order quantity.
3. It may cost additional remote fees for delivery if you are in a remote area.
Currently, our products are shipped through DHL, FedEx, SF, and UPS.
DELIVERY TIME1. Once the goods are shipped, estimated delivery time depends on the shipping methods you chose: FedEx International, 5-7 business days.
2. For in-stock parts, orders normally could be shipped out within 1-2days.
L4985ATR Information
STMicroelectronics L4985ATR technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics L4985ATR.
- Type
- Parameter
- Packaging
- Tape & Reel (TR)
- Part Status
- Active
- Manufacturer Lead Time
- 25 Weeks
- Current - Startup
- 400 µA
- Frequency - Switching
- 65kHz
- Mode
- Continuous Conduction (CCM)
- Mounting Type
- Surface Mount
- Operating Temperature
- -40°C ~ 150°C (TJ)
- Package / Case
- 8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package
- 8-SO
- Type
- Parameter
- Voltage - Supply
- 10V ~ 24.5V
- ExportControlClassNumber
- EAR99
- HtsusCode
- 8542.39.0060
- ReachStatus
- REACH Unaffected
- RoHS Status
- RoHS Compliant
Download datasheets and manufacturer documentation for STMicroelectronics L4985ATR.
Data sheet:
The L4985 is a peak current-mode PFC controller for boost converter with a proprietary multiplier “emulator” which in addition to the innovative THD optimizers guarantee very low Total Harmonic Distortion (THD) performance in all operating conditions. The device comes in a pin SO package and offers a high performance/low-component count 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 some kW.
The device, thanks to a proprietary off-time modulator, operates in quasi-fixed frequency in all operating conditions. Two options are available, 65 kHz for A and 130 kHz for B.
The 800V high voltage start-up block includes also the circuitry to discharge the X-capacitors of the EMI filter to a safe level. This allows the unit to meet safety regulation (such as IEC 61010-1 or IEC 62368-1) without using the traditional discharge resistor in parallel to the X-capacitors.
The device features low consumption and disable functions allowing usage in applications supposed to comply even with the latest energy saving requirements issued by Energy Star, the Department of Energy (DoE) in the United States, the European Code of Conduct, the European Union’s Ecodesign Directive, and other guidelines.
In addition to an overvoltage protection able to keep the output voltage under control during transient conditions, the IC is provided also with a protection against feedback loop failures or erroneous settings and boost inductor saturation. The brownout protection function allows to design medical equipment according to the latest regulations driven by IEC 60601-1-2 which requires the output regulation in case of mains dips lasting up to 500 msec. Soft-start limits the peak current.
The totem-pole output stage, capable of 0.7 A source and 1.5 A sink current, is suitable for big MOSFET or IGBT drives.
- Peak current mode CCM-operated
- 800 V high voltage startup with integrated input voltage sensing
- Active input filter capacitor discharge
- Proprietary multiplier “emulator” with minimum THD of line current in all operating conditions (CCM and DCM)
- Extremely few external components
- Protections: feedback loop failure, OVP, OCP, inductor saturation, brown-in, brownout (compliant to medical SMPS standards)
- Inductor current sense
- Disable and low consumption function
- In-rush current monitoring
- Soft-start for smooth startup
- 1.2% (@ Tj = 25 °C) internal reference voltage
- 65 kHz (A version) and 130 kHz (B version) switching frequency
- SO8 package
AIChipLink – Your Trusted Electronic Components Distributor
12.28 M
Listed Part Number
3,000+
Leading Manufacturers
4.9 M
In-stock SKU
15,000+
Warehouse Area(㎡)
