onsemi LV23401V-N-TLM-H: Key Features and Application Notes

The onsemi LV23401V-N-TLM-H is a highly integrated, high-performance low-dropout (LDO) linear regulator designed to deliver a clean, stable, and precise voltage rail for sensitive modern electronics. This component is engineered to meet the stringent power requirements of applications ranging from automotive systems to advanced consumer and industrial devices.

A standout feature of this LDO is its remarkably low dropout voltage, which ensures high efficiency even when the difference between the input and output voltage is minimal. This is critical for battery-powered applications where maximizing runtime is essential. Furthermore, the device boasts an extremely low noise output and excellent power supply ripple rejection (PSRR) performance. This makes it an ideal choice for powering noise-sensitive subsystems like RF transceivers, precision analog sensors, and audio components, where even minor power fluctuations can degrade performance.

The LV23401V-N-TLM-H offers a fixed output voltage of 3.3V with a high output accuracy of ±1%, providing a reliable and precise power source. It is capable of delivering up to 150 mA of continuous output current from an input voltage range of 2.5 V to 5.5 V, making it versatile for various power sources, including 3.7V Li-ion batteries and regulated 5V supplies.

Designed with robustness in mind, it incorporates key protection features such as overcurrent protection (OCP) and thermal shutdown. These safeguards protect the IC and the downstream circuitry from damage in fault conditions, enhancing system reliability. Its compact, thermally efficient package is suitable for space-constrained PCB designs.

Application Notes:

For optimal performance, careful attention to board layout is crucial. It is recommended to use a 1 μF ceramic capacitor on the input and a 1 μF ceramic capacitor on the output, placed as close as possible to the respective pins of the IC to minimize parasitic inductance and ensure stability. While the device is stable with ceramic capacitors, ensuring they have a sufficient voltage rating and X5R or X7R dielectric is important for performance over temperature. For applications with rapidly changing load currents, adding a small 10 nF capacitor on the output can further improve transient response.

ICGOOODFIND: The onsemi LV23401V-N-TLM-H stands out as a superior solution for applications demanding a clean, stable, and reliable voltage rail. Its combination of low noise, high PSRR, and robust protection features makes it an excellent choice for powering the heart of sensitive electronic systems in automotive, industrial, and consumer markets.

Keywords: Low-Dropout (LDO) Regulator, Low Noise, Power Supply Ripple Rejection (PSRR), Overcurrent Protection (OCP), Thermal Shutdown.