ONSEMI NCP1937B3DR2G
Manufacturer No:
NCP1937B3DR2G
Manufacturer:
ONSEMI
Package:
20-LSOP (0.154, 3.90mm Width), 17 Leads
Description:
Combo Power Factor Correction + QR Flyback Controller
Quantity:
In Stock :1459
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：Mon, Jun 22 - Tue, Jun 23, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
Payment
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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
Available from AS9120 Certified Supplier, AIChipLink delivers high-reliability electronic components supported by certified quality management, rigorous inspection processes, counterfeit mitigation controls, and full traceability systems. Our operations comply with AS9120, ISO 9001:2015, and IECQ ESD standards to support aerospace, industrial, defense, and mission-critical applications.
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.
NCP1937B3DR2G Information
ONSEMI NCP1937B3DR2G technical specifications, attributes, parameters and parts with similar specifications to ONSEMI NCP1937B3DR2G.
- Type
- Parameter
- MSL Type
- 1
- Topology
- Flyback
- fSW Typ (kHz)
- Variable
- Inhibition
- Yes
- Control Mode
- Current Mode
- VCC Max (V)
- 30
- Drive Cap. (mA)
- 500 / 800
- UVLO (V)
- Yes
- Case Outline
- 751BS
- MSL Temp (°C)
- 260
- Type
- Parameter
- Container Qty.
- 2500
- Frequency Operation
- Variable
- PFC Mode
- CRM
- UVP
- Yes
- Package Type
- SOIC-20 NB
- Container Type
- REEL
- Latch
- No
Download datasheets and manufacturer documentation for ONSEMI NCP1937B3DR2G.
Datasheet:
Package Drawing:
This combination IC integrates power factor correction (PFC) and quasi-resonant flyback functionality necessary to implement a compact and highly efficient Switched Mode Power Supply for an adapter application.The PFC stage exhibits near-unity power factor while operating in a Critical Conduction Mode (CrM) with a maximum frequency clamp. The circuit incorporates all the features necessary for building a robust and compact PFC stage while minimizing the number of external components.The quasi-resonant current-mode flyback stage features a proprietary valley-lockout circuitry, ensuring stable valley switching. This system works down to the 4th valley and toggles to a frequency foldback mode with a minimum frequency clamp beyond the 4th valley to eliminate audible noise. Skip mode operation allows excellent efficiency in light load conditions while consuming very low standby power consumption.
Application
- Adapters
- Combo PFC+QR
End Product
- All-In-One (AIO) Computers
- High Power Notebook Adapters
Feature
- <10mW No Load Standby Performance
- High Voltage Startup Circuit and Active Input Filter Capacitor Discharge Circuitry
- High Voltage Line Voltage Detector
- Integrated High Voltage Switch Disconnects PFC Feedback Resistor Divider
- Fault Input for Severe Fault Conditions
- Bi-Level Line-Dependent Output Voltage
- Boost Diode Short-Circuit Protection
- Adjustable PFC Disable Threshold Based on Output Power
- Frequency Foldback with Minimum Frequency Clamp
- Minimum Frequency Clamp
- Valley Switching Operation with Valley-Lockout
- PFC
- QR Flyback Controller
NCP1937B3DR2G FAQ
Can I request a quote for NCP1937B3DR2G?
NCP1937B3DR2G from ONSEMI is ready for RFQ submission. Send your target quantity and requirements, and AIChipLink will check current availability, lead time, and quantity-based pricing.
Why is pricing not shown as a fixed value for NCP1937B3DR2G?
The final price for NCP1937B3DR2G depends on requested quantity, supply conditions, date code, package option, and destination. An RFQ lets us return the current market quote for your order.
Which specifications should I review for NCP1937B3DR2G?
NCP1937B3DR2G is a ONSEMI AC-DC Power Conversion part. Key details include Frequency Operation: Variable and Drive Cap. (mA): 500 / 800; contact us if you need the specifications verified before sourcing.
When will I receive a quotation for NCP1937B3DR2G?
After you submit the RFQ for NCP1937B3DR2G, our sales team typically replies within 24 hours with availability, unit pricing, lead time, shipping choices, and possible substitutes.
What is the expected shipping time for NCP1937B3DR2G?
Once stock for NCP1937B3DR2G is confirmed, available inventory can generally ship within 1–2 business days. The final schedule depends on quantity, warehouse source, and delivery address.
Can AIChipLink help find alternatives to NCP1937B3DR2G?
Yes. If NCP1937B3DR2G is unavailable, end-of-life, or outside your schedule, we can review comparable ONSEMI AC-DC Power Conversion parts and compatible replacement options.
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(㎡)
