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Request evaluation samplesNCP1251ASN65T1G PMIC - AC DC Converters, Offline Switchers by ON Semiconductor
NCP1251ASN65T1G is a PMIC - AC DC Converters, Offline Switchers model from ON Semiconductor, presented on TrustCompo for buyers who need clear sourcing and review context before RFQ. This listing sits in the Integrated Circuits (ICs) / PMIC - AC DC Converters, Offline Switchers product path. Known package information currently points to SOT-23-6 under the ON Semiconductor brand listing. IC PWM CTLR OCP LATCH OVP 6TSOP. TrustCompo combines the available model, brand, hierarchy, and specification details around NCP1251ASN65T1G so buyers can move faster from review to quotation.
RoHS
Datasheet
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Key specifications
Series
-
Min Quantity
1
Category
Integrated Circuits (ICs)Sub Category
PMIC - AC DC Converters, Offline SwitchersDescription
IC PWM CTLR OCP LATCH OVP 6TSOP
key Attributes
-
Datasheet
View NCP1251ASN65T1G DatasheetTechnical document
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Globally recognized certifications
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ISO 9001
Quality management processes for more consistent sourcing and handling.
AS9120B
Aerospace-focused distribution controls for traceability and reliability.
ISO 14001
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ESD Control
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Product overview
Overview
Current-Mode PWM Controller for Off-line Power Supplies
The NCP1251 is a highly integrated PWM controller capable of delivering a rugged and high performance offline power supply in a tiny TSOP−6 package. With a supply range up to 28 V, the controller hosts a jittered 65 kHz or 100 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 limiting the peak current.
Features
• Fixed−Frequency 65 or 100 kHz Current−Mode Control Operation
• Internal and Adjustable Over Power Protection (OPP) Circuit
• Frequency Foldback Down to 26 kHz and Skip−Cycle in Light Load Conditions
• Internal Ramp Compensation
• Internal Fixed 4 ms Soft−Start
• 100 ms Timer−Based Auto−Recovery Short−Circuit Protection
• Frequency Jittering in Normal and Frequency Foldback Modes
• Option for Auto−Recovery or Latched Short−Circuit Protection
• OVP Input for Improved Robustness
• Up to 28 V VCC Operation
• Latched OVP Protection on VCC
• +300 mA / −500 mA Source/Sink Drive Capability
• Less than 100 mW Standby Power at High Line
• EPS 2.0 Compliant
•
These are Pb−Free DevicesTypical Applications
• ac−dc Converters for TVs, Set−top Boxes and Printers
• Offline Adapters for Notebooks and Netbooks
The NCP1251 is a highly integrated PWM controller capable of delivering a rugged and high performance offline power supply in a tiny TSOP−6 package. With a supply range up to 28 V, the controller hosts a jittered 65 kHz or 100 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 limiting the peak current.
Features
• Fixed−Frequency 65 or 100 kHz Current−Mode Control Operation
• Internal and Adjustable Over Power Protection (OPP) Circuit
• Frequency Foldback Down to 26 kHz and Skip−Cycle in Light Load Conditions
• Internal Ramp Compensation
• Internal Fixed 4 ms Soft−Start
• 100 ms Timer−Based Auto−Recovery Short−Circuit Protection
• Frequency Jittering in Normal and Frequency Foldback Modes
• Option for Auto−Recovery or Latched Short−Circuit Protection
• OVP Input for Improved Robustness
• Up to 28 V VCC Operation
• Latched OVP Protection on VCC
• +300 mA / −500 mA Source/Sink Drive Capability
• Less than 100 mW Standby Power at High Line
• EPS 2.0 Compliant
•
These are Pb−Free DevicesTypical Applications
• ac−dc Converters for TVs, Set−top Boxes and Printers
• Offline Adapters for Notebooks and Netbooks
Fast scan
Popular Specs Surfaced First
Product Attribute
Part Status
Active
Product Attribute
REACH Status
REACH Unaffected
Product Attribute
ECCN
EAR99
Product Attribute
Lead Free
Lead Free
Product Attribute
Lifecycle Status
ACTIVE (Last Updated: 2 days ago)
Product Attribute
Mounting Type
Surface Mount
Part Status
Active
REACH Status
REACH Unaffected
ECCN
EAR99
Lead Free
Lead Free
Lifecycle Status
ACTIVE (Last Updated: 2 days ago)
Mounting Type
Surface Mount
Published
2006
Factory Lead Time
4 Weeks
Packaging
Tape & Reel (TR)
Halogen Free
Halogen Free
Categories
Integrated Circuits (ICs)
Terminal Position
DUAL
Terminal Form
GULL WING
Operating Temperature
-40°C~125°C TJ
Terminal Pitch
0.95mm
Manufacturer
ON Semiconductor
Width
1.7mm
Subcategory
Switching Regulator or Controllers
Sub-Categories
PMIC - AC DC Converters, Offline Switchers
Package / Case
SOT-23-6 Thin, TSOT-23-6
Nominal Supply Current
2.1mA
Number Of Functions
1
Mount
Surface Mount
Pbfree Code
yes
Number Of Outputs
1
Number Of Terminations
6
Number Of Pins
6
Pin Count
6
Length
3.1mm
Height
1mm
Output Voltage
12V
Output Current
500mA
Frequency
65kHz
Operating Supply Current
2.1mA
Fall Time (Typ)
30 ns
Base Part Number
NCP1251
Manufacturer'S Part No.
NCP1251ASN65T1G
Terminal Finish
Tin (Sn)
Output Isolation
Isolated
Control Mode
CURRENT-MODE
Control Technique
PULSE WIDTH MODULATION
Analog IC - Other Type
SWITCHING CONTROLLER
Topology
Flyback
Input Voltage-Nom
12V
Switcher Configuration
SINGLE
Internal Switch(S)
No
Fault Protection
Over Power, Over Voltage, Short Circuit
Duty Cycle
80%
Rise Time
40ns
Voltage - Start Up
18V
Nominal Input Voltage
28V
Max Duty Cycle
84 %
Voltage - Supply (Vcc/Vdd)
8.8V~28V
JESD-609 Code
e3
Moisture Sensitivity Level (MSL)
1 (Unlimited)
RoHS Status
ROHS3 Compliant
HTSUS
8542.39.0001
ECCN Code
EAR99
Common questions
Product FAQ
Quick answers for buyers reviewing NCP1251ASN65T1G, stock, documentation, and sourcing steps.
What is NCP1251ASN65T1G?
NCP1251ASN65T1G is a PMIC - AC DC Converters, Offline Switchers component from ON Semiconductor. This product page summarizes the core sourcing details buyers need before checking price, availability, documentation, or samples.
What package and description are listed for NCP1251ASN65T1G?
NCP1251ASN65T1G is listed with package reference SOT-23-6. The current product description is IC PWM CTLR OCP LATCH OVP 6TSOP, and buyers should confirm package, footprint, and electrical details against the datasheet or quotation notes before approval.
Is NCP1251ASN65T1G available in stock?
This page currently shows 149471 units in stock and 49618 units available for NCP1251ASN65T1G. Because electronic component availability can change quickly, submit an RFQ to confirm live stock, lead time, and final pricing.
Can I request a quote or sample for NCP1251ASN65T1G?
Yes. Use the Quick Quote or Request Sample action on this page to send the quantity and sourcing requirements for NCP1251ASN65T1G by ON Semiconductor. The TrustCompo team can review price, availability, and documentation support.
Is a datasheet available for NCP1251ASN65T1G?
Yes. This page links to the datasheet for NCP1251ASN65T1G by ON Semiconductor, so engineers and buyers can review package, ratings, and application details before purchase.
How should buyers verify NCP1251ASN65T1G before ordering?
Buyers should confirm the manufacturer, package, quantity, target price, RoHS or compliance needs, and any Certificate of Conformance or traceability requirements for NCP1251ASN65T1G before approving the order.
PMIC - AC DC Converters, Offline Switchers
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