ONSEMI NCP1249AD65R2G

Manufacturer No:

NCP1249AD65R2G

Manufacturer:

ONSEMI

Package:

10-SOP (0.154, 3.90mm Width), 9 Leads

Description:

PWM Controller Featuring Peak Power Excursion and HV Startup

Quantity:

Delivery:

Payment:

In Stock :Available

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NCP1249AD65R2G information

ONSEMI NCP1249AD65R2G technical specifications, attributes, parameters and parts with similar specifications to ONSEMI NCP1249AD65R2G.

Type
Parameter

MSL Temp (°C)
260

fsw Typ (kHz)
65

Control Mode
Current Mode

UVLO (V)
8.8

Drive Cap. (mA)
300 / 500

Package Type
SOIC-9 NB

Case Outline
751BP

Container Type
REEL

Container Qty.
2500

Soft Start
Yes

VCC Max (V)
35

MSL Type
1

Topology
Flyback

Stand-by Mode
Yes

Short Circuit Protection
Yes

Latch
Yes

Download datasheets and manufacturer documentation for ONSEMI NCP1249AD65R2G.

Datasheet:

a50b57b08df7e98f24b7fe145613e377.pdf

Package Drawing:

0b6c903d6c5a65d4e07fb984378fff4e.pdf

The NCP1249 is a highly integrated high-voltage PWM controller capable of delivering a rugged and high performance offline power supply with extremely low no-load consumption. With a supply range up to 30 V, the controller hosts a jittered 65-kHz switching circuitry operated in peak current mode control. When the power on the secondary side starts to decrease, the controller automatically folds back its switching frequency down to a minimum level of 26 kHz. As the power further goes down, the part enters skip cycle while freezing the peak current setpoint.To help build rugged converters, the controller features several key protective features: an internal brown-out, a non-dissipative Over Power Protection for a constant maximum output current regardless of the input voltage and two latched over voltage protection inputs - either through a dedicated pin or via the Vcc input.The controller architecture is arranged to authorize a transient peak power excursion when the peak current hits the limit. At this point, the switching frequency is increased from 65 kHz to 130 kHz until the peak requirement disappears. The timer duration is then modulated as the converter crosses a peak power excursion mode (long) or undergoes a short circuit (short). Similar to NCP1255 & NCP1254 with integrated HV Startup NCP1249 has Active ON (A&B) and Active OFF (C&D) versions.

Application

Ac-Dc Adapters

End Product

Notebook Adapters
Printer Power Supplies

Feature

Integrated High Voltage startup
65kHz operating frequency with 130kHz Frequency Excursion
Internal and Adjustable Over Power Protection (OPP) Circuit
Adjustable Brown-Out Protection
Frequency Foldback down to 26 kHz and Skip-cycle in light load conditions
Adjustable Timer-based Auto-recovery Overload/Short-circuit protection with 100% to 25% timer reduction for short-circuit faults
Frequency Jittering in Normal and Frequency Foldback Modes
Latch Input
Double Vcc hiccup in fault mode

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.