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250-mA LDO voltage regulator offers 35-microamp ground current

Malvern, Pa.—Vishay Intertechnology Inc. has released a 250-mA LDO voltage regulator that offers 35-microamp typical ground current at a 1-mA load in a space-saving thin SOT23-5L package.

The SiP21110's low ground current helps to extend battery run times between charges in battery-operated power systems and portable electronics, such as cell phones and wireless handsets, PDAs, digital cameras, pagers, wireless modems, and medical handheld devices.

The SiP21110 features adjustable output from 1.3 V to 5 V with an external resistor network and a high 1.0 % output voltage accuracy at +25°C. Its advanced design architecture allows stable operation with small low-ESR ceramic output capacitors, reducing board space and component cost. Additional SiP21110 features include high 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-ohm 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-microamp maximum shutdown current at +85°C. The SiP21110 operates over a junction temperature range of -40 to +125°C.

Pricing: For U.S. delivery is $0.38 in 1000-piece quantities.
Availability: Samples and production quantities are available now, with lead times of eight weeks for larger orders.

Datasheet: Click here.

Vishay Intertechnology Inc., www.vishay.com

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