NCP1051ST44T3

Duty Cycle:	77%
Base Part Number:	NCP1051
Mounting Type:	Surface Mount
Supplier Device Package:	SOT-223
Package / Case:	TO-261-4, TO-261AA
Operating Temperature:	-40°C ~ 150°C (TJ)
Control Features:	--
Fault Protection:	Current Limiting, Open Loop, Over Load, Over Temperature
Power (Watts):	40W
Frequency - Switching:	44kHz
Series:	--
Voltage - Supply (Vcc/Vdd):	7.5 V ~ 10 V
Voltage - Start Up:	8.5V
Topology:	Flyback
Voltage - Breakdown:	700V
Internal Switch(s):	Yes
Output Isolation:	Isolated
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

NCP1051ST44T3 Application Field and Working Principle

Background

NCP1051ST44T3 is a step-down high-efficiency and low noise DC-DC converter manufactured by ON Semiconductor. It belongs to a family of Power Management Integrated Circuits (PMIC). The NCP1051ST44T3 is specifically a part of PMICs that deals with AC/DC converters, offline switchers and similar devices. This particular device is an optimal choice when it comes to applications that have a requirement of stable and reliable high power DC output across a wide input voltage range. Its native 1V output, controlled by ON Semiconductor’s advanced control algorithms, makes it an ideal choice for applications in laptop, netbook and tablet computers.

Application Field

The NCP1051ST44T3 is a step-down high efficiency and low noise DC-DC converter providing up to 10A of output current with a wide input voltage range of 5V to 30V. This voltage range makes it a perfect choice for use in laptop, netbook and tablet computer applications. The NCP1051ST44T3 operates over a wide range of operating temperatures and with a maximum output ripple voltage of just 100mV, it is one of the most stable and reliable linear DC-DC converters currently available. Additionally, the device features a wide range of features such as power-good indication and over-current protection thus making it suitable for even the most demanding applications. This makes it well suited for use in applications including communications, industrial, medical equipment, and audio applications.

Working Principle

As the name implies, the NCP1051ST44T3 is based on a step-down principle. This means that the output voltage is always lower than the input voltage. To achieve this, the device uses a synchronous rectifier (which uses FETs) and a pulse-width modulation (PWM) control algorithm. The device\'s FETs are connected in parallel to increase the load current capability. This also makes it possible to achieve higher efficiency and reduce power losses. The pulse-width modulation algorithm is used to directly control the output voltage. This means that the output voltage can be easily adjusted via the device\'s external setting pins.The switch in the device’s integrated control circuit is used to connect the output voltage to the load. This switch is opened or closed based on the pulse-width modulation duty cycle. This allows the output voltage to be accurately maintained even under varying conditions.To ensure that the device operates safely, it is equipped with over-current protection, short-circuit protection, under-voltage lockout, over-voltage protection, and power-on reset circuits. This helps to ensure that the device is always stable even during unexpected operating conditions.

Conclusion

The NCP1051ST44T3 is a step-down high-efficiency and low noise DC-DC converter by ON Semicircuits. It features a wide input voltage range of 5V to 30V and provides up to 10A of output current. It is specifically designed for applications such as laptops, netbooks and tablets computer applications. Additionally, the device includes features such as power-good indications, over-current protection, and over-voltage protection. The device works on a step-down principle and uses a synchronous rectifier and pulse-width modulation (PWM) control algorithm. It also employs an integrated control circuit with a switch used to connect the output voltage to the load. The device also comes with numerous safety features such as over-current protection, short-circuit protection, under-voltage lockout, over-voltage protection, and power-on reset circuits to ensure safe operation.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description