NCP705MT33TCG

The ON Semiconductor NCP705MT33TCG is a 500mA Low Dropout (LDO) linear voltage regulator designed for noise-sensitive applications. It provides a fixed 3.3V output voltage with high Power Supply Rejection Ratio (PSRR) and ultra-low noise performance, eliminating the need for an additional noise bypass capacitor.

Key electrical specifications include an operating input voltage range of 2.5V to 5.5V, an ultra-low quiescent current of typically 13 µA, and an ultra-low noise level of 12 µV RMS from 100 Hz to 100 kHz. The device offers a very low dropout voltage of 230 mV typical at 500 mA and maintains ±2% accuracy over load, line, and temperature variations. Protection features include over current, over temperature, soft start, and under voltage lockout (UVLO).

This LDO regulator is suitable for battery-powered portable applications, including PDAs, mobile phones, GPS, smartphones, wireless handsets, and portable medical equipment. It is housed in a compact 6-WDFN (2x2 mm) surface-mount package and operates within a temperature range of -40°C to 125°C.

The NCP705MT33TCG incorporates internal soft-start to limit inrush current and active output discharge for fast turn-off. Its design optimizes performance for battery-operated devices by employing dynamic Iq management for ultra-low quiescent current consumption at light-load conditions.