NCP59800BMNADJTBG

The NCP59800BMNADJTBG is a 1A low-dropout linear regulator (LDO) manufactured by On Semiconductor. It features high power-supply ripple rejection (PSRR) and ultra-low output noise, making it suitable for noise-sensitive analog RF front-ends in telecom equipment. This LDO operates with an input voltage range of 2.2 V to 6.0 V and provides an adjustable output voltage from 0.8 V to 5 V.

Key electrical characteristics include a typical quiescent current of 60 µA, a low dropout voltage of 200 mV at 1A, and ±2.5% output voltage accuracy across load, line, and temperature variations. The device is stable with small 4.7 µF ceramic capacitors and offers very low noise, typically 15 VRMS from 100 Hz to 100 kHz. It also incorporates over-current and thermal shutdown protection features.

The NCP59800BMNADJTBG is available in a compact 3 mm x 3 mm DFN8 package with an exposed pad. This surface-mount package is designed for efficient thermal dissipation. The regulator has an enable pin for control and a dedicated noise reduction (NR) pin for connecting an external capacitor to further reduce output noise and provide soft-start functionality.

Typical applications for this LDO include telecom infrastructure, audio circuits, and high-speed interfaces such as Phase-Locked Loops (PLLs) and Voltage-Controlled Oscillators (VCOs). Its combination of low noise, high PSRR, and adjustable output makes it a versatile choice for demanding analog and RF designs.