LM5166YDRCT

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

The LM5166YDRCT is a step-up DC-DC controller intended for use in many fixed-frequency, peak current mode applications. This device is able to regulate output voltages from 2.5V to 100V and can be used in various applications such as power over Ethernet (PoE), switched-mode power supplies (SMPS), and point of load (POL) converters. The LM5166YDRCT is ideal for applications that require high efficiency, high-frequency, and adjustable output voltage.

The LM5166YDRCT is a synchronous-step-up DC-DC controller that features integrated power MOSFETs to regulate the output voltage. It utilizes synchronous rectification to improve efficiency and reduce losses from conduction, switching and thermal resistance. The device is optimized for wide input voltage, up to 100V and allows for a wide input voltage range of 0.4V to 100V. The controller is also equipped with a fault protection, including over-voltage, under-voltage protection, over-temperature protection, and overload protection.

The LM5166YDRCT has a wide variety of features, such as a programmable switching frequency from 200 kHz to 4MHz, adjustable current limit, pulse-width modulation (PWM) fast response, output voltage monitoring and load shedding, and a sophisticated protection watchdog. The controller also offers an internal slope compensation and an output ripple filter. To provide accuracy, the LM5166YDRCT has voltage feedback regulation with ±3% accuracy.

To ensure easy programming, the LM5166YDRCT has low voltage control (LVC) and low voltage protection (LVP) pins that can be used to select the output voltage and monitor the current levels. The device also has a logic feedback comparator that ensures synchronization with the external clock source. The controller includes an integrated resistor for quick start up, low noise operation and a small PCB size.

The LM5166YDRCT uses a two-phase synchronous rectification which helps in reducing losses from conduction, switching and thermal resistance. It has an efficient two-phase control system wherein each phase is controlled using a MOSFET switch and a low side driver. The two-phase architecture also provides better phase balance, allowing for better thermal management and efficiency for the entire system.

In a typical application, the LM5166YDRCT accepts a low DC input voltage and increases it to a higher DC output voltage. The output voltage is regulated by adjusting the duty cycle of the pulse-width modulated (PWM) signal. The duty cycle is in turn controlled by the external clock source and set of internal comparators. The device features a ramp generator and adjustable slope compensation to ensure stable output voltage ripple and improve transient responses.

In conclusion, the LM5166YDRCT is a high performance, high speed, step-up DC-DC controller for regulating output voltages from 0.4V to 100V. It provides adjustable current limit and pulse-width modulation (PWM) fast response, output voltage monitoring and load shedding, as well as a sophisticated protection watchdog. It is suitable for many fixed-frequency, peak current applications such as power over Ethernet (PoE), switched-mode power supplies (SMPS), and point of load (POL) converters.

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