ONSEMI NCP1937A2DR2G

Manufacturer No:

NCP1937A2DR2G

Manufacturer:

ONSEMI

Package:

20-LSOP (0.154, 3.90mm Width), 17 Leads

Description:

Combo Power Factor Correction + QR Flyback Controller

Quantity:

Delivery:

Payment:

In Stock :Available

Price not displayed? Please send an RFQ, and we will respond immediately.

NCP1937A2DR2G information

ONSEMI NCP1937A2DR2G technical specifications, attributes, parameters and parts with similar specifications to ONSEMI NCP1937A2DR2G.

Type
Parameter

PFC Mode
CRM

Latch
Yes

Package Type
SOIC-20 NB

Container Type
REEL

fSW Typ (kHz)
Variable

Inhibition
Yes

MSL Type
1

Topology
Flyback

Container Qty.
2500

Frequency Operation
Variable

Control Mode
Current Mode

VCC Max (V)
30

Drive Cap. (mA)
500 / 800

UVLO (V)
Yes

Case Outline
751BS

MSL Temp (°C)
260

Download datasheets and manufacturer documentation for ONSEMI NCP1937A2DR2G.

Datasheet:

d4a46fd488b863c5c9974bacde68d488.pdf

Package Drawing:

8226c1abcd7216a7e2a742eb26d46cac.pdf

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

User Guide

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 PAYMENT

For 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.

IMPORTANT NOTICE

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.

SHIPPING METHOD

Currently, our products are shipped through DHL, FedEx, SF, and UPS.

DELIVERY TIME

1. 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.