Linear Technology Corp. (LTC, Milpitas, CA) announced its new LT3021, a 500 mA very low dropout (VLDO) regulator that features input-voltage capability down to 0.9 V and adjustable output voltage down to 0.2 V. The LT3021’s low input voltage enables operation across the entire voltage range of both single-cell alkaline and nickel-metal hydride batteries (1.4 V to 0.9 V).
The LT3021 maintains its 160 mV dropout voltage up to 500 mA of operating current, making it suitable for applications requiring a low VIN to VOUT differential. Additionally, it offers micropower operation with only 120 µA of quiescent current and less than 3 µA in shutdown, maximizing run time in hand-held applications. The LT3021 regulator optimizes stability and transient response with low ESR, ceramic output capacitors as small as 3.3 µF. Other LT3021 features include 0.05% line regulation and 0.2% load regulation.
The LT3021 regulator is available in a low-profile (0.75 mm), 16-lead, DFN 5 mm x 5 mm package with exposed pad, and an eight-lead SOIC package, both offering compact solution footprints. Both the LT3021EDH (16-lead DFN) and the LT3021ES8 (SOIC-8) are available from stock. Pricing for 1,000-piece quantities starts at $2.25 each.
