NCP1340B3D1R2G AC-DC Power Conversion by ON Semiconductor

Quasi-Resonant Controller, High-Voltage, Featuring Valley Lock-Out Switching

Status: Active
Series: NCP1340
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The NCP1340 is a highly integrated quasi−resonant flyback controller suitable for designing high−performance off−line power converters. With an integrated active X2 capacitor discharge feature, the NCP1340 can enable no−load power consumption below 30 mW. The quasi−resonant current−mode flyback stage features a proprietary valley−lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and transitions to a frequency foldback mode to reduce switching losses. As the load decreases further, the NCP1340 enters quiet−skip mode to manage the power delivery. To help ensure converter ruggedness, the NCP1340 implements several key protective features such as internal brownout detection, a non−dissipative Over Power Protection (OPP) for constant maximum output power regardless of input voltage, a latched over voltage and NTC−ready over temperature protection through a dedicated pin, and line removal detection to safely discharge the X2 capacitors when the line is removed.

Where to Buy

Prices starting from US$0.52

Distributor Stock
Logo for Farnell
Farnell
from US$0.56
200
in stock
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Logo for Future Electronics
Future Electronics
from US$0.52
5,000
in stock
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Logo for Newark Electronics
Newark Electronics
from US$0.62
200
in stock
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Logo for element14
element14
from US$0.56
200
in stock
Buy Now
Logo for Avnet America
Avnet America
from US$0.53
-
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Logo for Avnet Asia
Avnet Asia
from US$0.55
-
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Features

QR Frequency Jittering
New Quiet-Skip Technology
Integrated HV Startup with Brownout Protection
Valley Switching Operation with Valley Lockout
Integrated X2 Capacitor Discharge Capability
NTC Compatible Fault Pin
High Drive Capability: -500 mA / +800 mA
Latch input for OVP and OTP implementations
Benefits
Reduces EMI Signature
Ensures Operation Outside Audible Range
Provides an efficient power-on source and protects agaisnts drops in input mains voltage
Maximizing the efficiency over the entire power range
Eliminates the need for a X2 resistors
Extra protection against high temperature or other fault conditions
Enables faster switching of primary-side MOSFET
Simple implementation of required protection functions
Applications
Medium or High Power AC-DC Adapters
Notebook Adpaters
Computer Power Supplies
End Products
Ultra High Density AC-DC Adapters
Flat TV SMPS
Phone and Tablet Adapters

Specifications

Description NCP1340
Compliance Pb-free Halide free
Topology Flyback
Control Mode Current Mode
fsw Typ (kHz) Variable
Stand-by Mode Yes
UVLO (V) 9
Short Circuit Protection Yes
Latch No
Soft Start Yes
VCC Max (V) 30
Drive Cap. (mA) 500 / 800
Package Type SOIC-9 NB

Alternative Descriptions

NCP1340 Series 28 V SMT High-Voltage Quasi-Resonant Controller - SOIC-8 | Future Electronics
Ac/Dc Conv, Flyback, 0.33W, Soic-9 | Newark Electronics
AC/DC CONV, FLYBACK, 0.33W, SOIC-9 | element14
Current Mode PWM Controller 800mA 9-Pin SOIC-N T/R | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a NCP1340B3D1R2G?

Additional datasheets, footprints and schematics for NCP1340B3D1R2G are listed on our Part Details page. You can also find images and similar parts to NCP1340B3D1R2G on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for NCP1340B3D1R2G on our Product Comparison page. Access via the 'View Pricing & Stock' button to view NCP1340B3D1R2G price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does NCP1340B3D1R2G fall under?

The NCP1340B3D1R2G is listed under Power Management > AC-DC Power Conversion > Offline Controllers.

Can I view similar or alternative parts?

You can view similar parts to NCP1340B3D1R2G when available in the Offline Controllers range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the NCP1340B3D1R2G you can contact the distributor directly for product support, shipping queries etc.

Is the NCP1340B3D1R2G RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for NCP1340B3D1R2G have stock available?

Authorised distributors including Future Electronics, Newark Electronics, element14, Farnell and Avnet America have stock available or on a lead time for NCP1340B3D1R2G.

How do I check stock and lead times for all distributors?

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