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NCP1251ASN65T1G

The NCP1251ASN65T1G is a ROHS-compliant SOP-6-1.5mm AC-DC controller and regulator

Manufacturer:

Onsemi
Mfr.Part #:

NCP1251ASN65T1G
Datasheet:

NCP1251ASN65T1G Datasheet (PDF)
Compliance:

PbAHP
Case Outline:

318G-02
MSL Type:

1
MSL Temp (°C):

260
EDA/CAD Models:

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NCP1251ASN65T1G General Description

The NCP1251ASN65T1G is an integrated circuit (IC) manufactured by ON Semiconductor. It belongs to the NCP1251 family of PWM (Pulse Width Modulation) controllers specifically designed for offline power supplies. This IC operates with a fixed switching frequency and features a high-voltage start-up current source. With a wide input voltage range, typically from 85V AC to 265V AC, it can accommodate various input sources. The NCP1251ASN65T1G integrates several protection features, including overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown, enhancing system reliability. This device is housed in a small SOT-223 package, making it suitable for space-constrained applications. Its precise regulation and efficiency make it ideal for use in low-power, non-isolated flyback converters found in various consumer electronics, such as chargers, adapters, and auxiliary power supplies. Additionally, its low standby power consumption contributes to energy-efficient designs

Key Features

The NCP1251ASN65T1G is a PWM controller IC for offline power supplies

It features a fixed frequency oscillator, a cycle-by-cycle current limit, and a Dynamic Self-Supply circuit

It operates in a wide input voltage range, offers overvoltage protection, and has an internal start-up circuit

Application

The NCP1251ASN65T1G is commonly used in low-power offline switch-mode power supplies, LED lighting, and auxiliary power supplies in consumer electronics

It's favored for its high voltage startup, tight output voltage regulation, and protection features

Its compact size and efficiency make it suitable for various compact electronic devices

Specifications

Status	Last Shipments	Compliance	PbAHP
Case Outline	318G-02	MSL Type	1
MSL Temp (°C)	260	Container Type	REEL
Container Qty.	3000	ON Target	N
Topology	Flyback	Control Mode	Current Mode
fsw Typ (kHz)	65	Stand-by Mode	Yes
UVLO (V)	8.8	Short Circuit Protection	Yes
Latch	Yes	Soft Start	Yes
VCC Max (V)	28	Drive Cap. (mA)	300 / 500
Pricing ($/Unit)	Price N/A