Vishay has extended its LDO product family portfolio with the release of the new SiP21110 250 mA voltage regulator. The cost-effective device features a low 35 μA typical ground current at a 1 mA load in the space-saving Thin SOT23-5L package. Its ultra-low ground current helps to extend battery run times between charges in battery-operated power systems.
The LDO features adjustable output from 1,3 V to 5 V with an external resistor network, and 1,0% output voltage accuracy at +25°C. Its design architecture allows stable operation with small, low-ESR ceramic output capacitors, reducing board space and component cost. Additional features include excellent transient response, low peak-to-peak transient output voltage with fast recovery time, as well as high PSRR, while consuming a minimum of current.
The device is designed to maintain regulation while delivering 330 mA typical peak current for systems with a high surge current upon turn-on. During start-up, an active pull-down circuit improves the output transient response and regulation. In shutdown mode, the output automatically discharges by connecting the output to ground through a 100 n-channel MOSFET.
For safe operation, the device offers thermal overload (+160°C typical) and built-in short circuit protection (500 mA typical), with a 1 μA maximum shutdown current at +85°C. It operates over a junction temperature range of -40°C to +125°C.
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