LM5119PSQ/NOPB

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The LM5119PSQ/NOPB is an easy-to-use 3MHz synchronous step-down DC-DC converter that can deliver up to 2A output current. It features a constant on-time architecture with an adjustable output voltage. The included high-side and low-side MOSFETs provide superior efficiency and thermal performance. The LM 5119PSQ/NOPB is an ideal solution for systems that require a low-noise, wide input voltage range, and a high output current in a small form factor. 
Application field
The LM5119PSQ/NOPB is suitable for many applications, including but not limited to: 
 Point-of-Load (PoL) supplies 
 Computer architecture 
 Wireless communications 
 Server, PC, and workstation 
 Industrial and medical 
 Automotive 
Working principle
The LM5119PSQ/NOPB works by controlling the output voltage through a synchronous rectification buck topology. The device utilizes an adjustable constant-on time architecture operating with a 3 MHz switching frequency. The device has a wide 6V-46V input voltage range and an adjustable output voltage range of 0.6V to 5.5V. The LM5119PSQ/NOPB utilizes programmable current limit and thermal shutdown protection.
The Vcc supply is used to power the entire device, and the EN/UVLO pin provides a digital enable/disable for the device. A programmable soft-start time can be used for setting the output voltage rise time and to prevent load current overrun during start-up. The device has an adjustable switching frequency of up to 3MHz, and can be synchronized externally for noise sensitive applications. The LM5119PSQ/NOPB also features a programmable under voltage lockout (UVLO) for protection against the input voltage. 
The LM5119PSQ/NOPB is an easy-to-use 3MHz synchronous step-down DC-DC converter with an adjustable output voltage and a wide input voltage range. The device offers maximum efficiency of up to 90%, wide frequency range of up to 3MHz, and an adjustable output voltage range of 0.6V - 5.5V. The LM5119PSQ/NOPB includes protection features such as programmable current limit, thermal shutdown, and soft-start time. The device is ideal for applications that require a low-noise, wide input voltage range and high output current in a small form factor.

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