LDLN030 Datasheet 300 mA ultra low-noise LDO with Power Good and soft-start Features Ultra-low output noise: 7.5 V RMS Operating input voltage range: 1.6 V to 5.5 V Undervoltage lockout TSOT23-5L Output current up to 300 mA Very low quiescent current:16 A at no-load Controlled Iq in dropout condition Very low dropout voltage: 100 mV at 200 mA, 150 mV at 300 mA Very high PSRR: 80 dB 100 Hz, 60 dB 100 kHz Output voltage accuracy: 2% across line, load and temperature Output voltage versions: from 1 V to 5 V, with 50 mV step Logic-controlled electronic shutdown Power Good Output discharge feature Internal soft-start to limit the in-rush current Overcurrent and thermal protections Temperature range: from -40 C to +125 C Package: TSOT23-5L Applications Maturity status link Smartphones/tablets LDLN030 Image sensors Device summary Instrumentation Order code LDLN030G33R VCO and RF modules Package TSOT23-5L HDD and SSD Portable and other battery powered devices Output voltage 3.3 V Marking KN33 Description Packing Tape and reel The LDLN030 is a 300 mA very low-dropout voltage regulator, able to work with an input voltage ranging from 1.6 V to 5.5 V. The typical dropout voltage at 300 mA load is 150 mV. The very low quiescent current, which is just 16 A at no load, extends battery-life of applications requiring very long standby time. Thanks to its ultra low-noise value and high PSRR the device provides a very clean output, suitable for ultra-sensitive loads. It is stable with ceramic capacitors. The enable logic control function puts the LDLN030 into shutdown mode allowing a total current consumption lower than 1 A. The device also includes short-circuit constant current limiting, undervoltage lockout, soft-start, Power Good and thermal protection. Typical applications are noise sensitive loads such as ADC, VCO in mobile phones and tablets, wireless lan devices. The LDLN030 is designed to keep the quiescent DS12443 - Rev 1 - February 2018 www.st.com/ For further information contact your local STMicroelectronics sales office.LDLN030 current under control and at a low value also during dropout operation, helping to extend even more the operating time of battery-powered devices. DS12443 - Rev 1 page 2/21