Micropower linear regulator withstands 80V input at 140 degrees C

Milpitas, Calif.—Linear Technology Corp. has developed a higher temperature version of the LT3010, a high-voltage micropower, low dropout regulator that delivers up to 50mA of continuous output current.

The latest H-grade version enables operation up to 140°C compared to the E grade, which operates up to 125°C. The LT3010 features an input voltage range of 3V to 80V, delivering output voltages as low as 1.275V. The LT3010-5 provides a fixed 5V output.

The 80V input voltage capability makes it suitable for automotive applications, 48V telecom backup supplies and industrial control applications. Battery-powered systems that require optimum run time can leverage the LT3010's low quiescent current of 30uA (operating) and 1uA (in shutdown).

Output noise is minimized at only 100uVRMS over a 10Hz to 100kHz bandwidth, making the LT3010/-5 suitable for noise-sensitive applications.

For high-voltage applications that require large input-to-output voltage differentials, the LT3010/-5 is housed in a thermally enhanced MSOP-8 package that offers thermal resistance equivalent to much larger conventional packages, according to Linear.

The LT3010/-5 is able to operate with very small, low cost, ceramic output capacitors. It is stable with a 1uF output capacitor while older linear regulators require between 10uF and 100uF to maintain stability.

Pricing: Starts at $2.05 each for 1,000-piece quantities.
Availability: From stock in an 8-lead thermally enhanced MSOP package.

Data Sheet: click here.

Related content:
Linear regulators—matching the device to the application: click here.
Assessing the dc performance and accuracy of low dropout regulators: click here.

Linear Technology Corp., 1-408-432-1900,

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