The LTC3025-X is a micropower, VLDO™ (very low dropout) linear regulator which operates from input voltages as low as 0.9V. The device is capable of supplying 500mA of output current with a typical dropout voltage of only 85mV. A BIAS supply is required to run the internal reference and LDO circuitry while output current comes directly from the IN supply for high efficiency regulation. The LTC3025-1 features an adjustable output with a low 0.4V reference while the LTC3025-2, LTC3025-3, and LTC3025-4 have fixed 1.2V, 1.5V and 1.8V output voltages respectively. The LTC3025-X’s low quiescent current makes it an ideal choice for use in battery-powered systems. For 3-cell NiMH and single cell Li-Ion applications, the BIAS voltage can be supplied directly from the battery while the input can come from a high efficiency buck regulator, providing a high efficiency, low noise output. Other features include high output voltage accuracy, excellent transient response, stability with ultralow ESR ceramic capacitors as small as 1μF, short-circuit and thermal overload protection and output current limiting. The LTC3025-X is available in a tiny, low profile (0.75mm) 6-lead DFN (2mm × 2mm) package. Output Current Output Voltage LTC3025 300mA Adj (0.4V to 3.6V) LTC3025-1 500mA Adj (0.4V to 3.6V) LTC3025-2 500mA 1.2V Fixed LTC3025-3 500mA 1.5V Fixed LTC3025-4 500mA 1.8V Fixed APPLICATIONS * Low Power Handheld Devices * Low Voltage Logic Supplies * DSP Power Supplies * Cellular Phones * Portable Electronic Equipment * Handheld Medical Instruments * Post Regulator for Switching Supply Noise Rejection * Wide Input Voltage Range: 0.9V to 5.5V * Stable with Ceramic Capacitors * Very Low Dropout: 85mV at 500mA * Adjustable Output Range: 0.4V to 3.6V (LTC3025-1) * Fixed Output: 1.2V(LTC3025-2), 1.5V(LTC3025-3), 1.8V(LTC3025-4) * ±2% Voltage Accuracy over Temperature, Supply and Load * Low Noise: 80μVRMS (10Hz to 100kHz) https://elecena.pl/product/15098637/500ma-micropower-vldo-linear-regulators 2018-08-13 https://elecena.pl/product/15098637/500ma-micropower-vldo-linear-regulators 2025-01-21