NCP1071SOTGEVB

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NCP1071, from ON Semiconductor, is a monolithic controller for off-line, switched-mode power supplies. This device combines all functions necessary to construct a high power factor switch-mode power supply with excellent line and load regulation. This device can be used to construct power supplies for multiple output applications such as computing, telecom, and household appliances. The NCP1071 is available in the space saving SOT-23-6 and 8-Lead SOIC packages.

The main application field of NCP1071 is for high power factor switch-mode power supplies. This device provides an integrated system solution with low external component count. It combines a current mode control scheme with an external MOSFET driver, allowing for low cost, high performance power supply design. Additionally, its built-in transient protection and soft start eliminate the need for extra components that are necessary in the traditional hard start systems.

The working principle of the NCP1071 is based on current mode control. It senses the inductor current and supplies current to the external MOSFET in order to regulate the output voltage. The current mode control provides fast loop response and allows for the design of low-cost, low-voltage, low-power SWPPs. This device also integrates an overload protection circuit that detects a current overload in the power stage and triggers a soft shutdown, reducing the heat dissipation in the power stage. The device also features a programmable under voltage lockout (UVLO) circuit that prevents the system from operating in an unstable region.

The NCP1071 is a versatile device, which can be used in many different applications. It can be used to create 12V bipolar or multi-output power supplies with power factor correction. It is also suitable for applications such as telecom, computer and consumer electronics. The device also features internal overload current protection, UVLO, and soft start circuit, so it can be used in environments that require step loads and transient response. The device is designed to be compatible with numerous external components including inductors, diodes, and capacitors.

To sum up, the NCP1071 SOT-GEVB from ON Semiconductor is a monolithic controller for off-line, switched-mode power supplies. It is an integrated system solution with low external component count that can be used to construct high power factor switch-mode power supply designs with excellent line and load regulation. It utilizes current mode control to provide fast loop response and allows for the design of low-cost, low-voltage, low-power SWPPs. This device is suitable for numerous power supply applications and features internal overload current protection, UVLO, and soft start circuit.

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