MP2451DT-LF-Z

The MP2451DT-LF-Z is a step-down DC-DC switch regulator IC designed to provide excellent performance, with an adjustable output voltage of 1.0V ~ 24V, high efficiency and low standby current in an ultra-small SOT-23-5 (5-pin) package.

The MP2451DT-LF-Z is widely used in a variety of applications such as portable electronic devices, digital products, battery-powered applications and chargers.

Application Field

The MP2451DT-LF-Z offers low quiescent current and high efficiency over a wide input voltage range of 2.5V ~ 6V and an adjustable 0.8V ~ 24V output voltage range. Its ultra-small package size and high output current of up to 1.2A make it suitable for space-constrained consumer electronics. It is also suitable for applications that require continuous stable output power in the presence of input voltage and load variations.

Aside from consumer electronics applications, its robust features make it suitable for other more demanding applications such as notebook computers, tablet PCs, microcontrollers and digital cameras. The circuit will also be able to protect against short circuit, overcurrent, overvoltage and thermal shutdown, making it easy to use and reliable in operation.

Working Principle

The working principle of the MP2451DT-LF-Z is based on its switch regulator topology. It features a fixed-frequency current mode control, which provides excellent line and load regulation. The internal architecture allows it to deliver an adjustable 0.8V ~ 24V output voltage range with high efficiency and low output noise.

It also has a high-speed loop compensation to minimize external components and still maintain a tight over-current protection loop. The chip also has a high switching frequency of 1500kHz, which minimizes the size of the external components needed and also helps to reduce EMI. Additionally, the device is designed for low-power applications such as battery-powered products and charging circuits, as it features a low quiescent current of 65uA at no load.

Overall, the MP2451DT-LF-Z is a highly efficient, low-power switch regulator IC with a wide range of adjustable output voltages and a low quiescent current. This makes it ideal for applications where power efficiency and space-saving are essential.