Linear Technology announces the LTC1844, a very low dropout (VLDO) micropower linear regulator that can deliver up to 150 mA of continuous output current from a ThinSOT package. The LTC1844 can operate from input voltage as low as of 1.6 V, making it suited for single cell Li-Ion, multi-cell Alkaline, or NiMH applications. It is available with an adjustable output or with fixed outputs ranging from 1.5 V to 3.3 V. At 50 mA of continuous output current, dropout voltage is 30 mV, rising to 90 mV at 150 mA. This VLDO voltage enables the LTC1844 to regulate over small voltage differentials. It maintains an output voltage accuracy of +1.75% over the full temperature, voltage, and current ranges. The LTC1844's supply current of 40 uA (operating) and 10 nA (in shutdown) make it suited for battery-powered applications that require optimum battery life. The LTC1844's low output noise of 30 uVRMS (over a 10 Hz to 100 kHz bandwidth) makes it suited for noise sensitive applications. Internal protection circuitry includes: reverse-battery protection, current limiting, thermal limiting, and reverse-current protection, to provide enhanced reliability and ease of design.
www.linear.com; (408) 432-1900