Linear Tech Dual LDO Now Offered in MP-Grade Temperature Range

Linear Technology Corp. announced a new MP grade, wider temperature range version of the LT3032, a dual, low noise, positive/negative low dropout voltage linear regulator. The device delivers up to ±150mA continuous output current on each channel with a 300mV dropout voltage at full load. The LT3032 features a wide input voltage range of ±2.3V to ±20V, delivering adjustable output voltages from ±1.22V to ±20V.

A single capacitor provides ultralow noise operation of only 20uVRMS across a wide bandwidth of 10Hz to 100kHz for the positive output rail, and only 30µVRMS for the negative rail. The LT3032’s output voltage tolerance is highly accurate at ±3% over line, load and temperature. The device’s wide input and output voltage ranges, fast transient response and low quiescent current of 30µA per channel (operating) and <3&micro:A in shutdown (total) make it an excellent choice for portable battery-powered systems that require optimum run time, and for use in bipolar op amp/instrumentation power supply and low noise supply applications.

The LT3032 operates with very small, low cost, ceramic output capacitors, optimizing stability and transient response. It is stable with only 2.2&micro:F output capacitors. These tiny external capacitors can be used without the addition of series resistance (ESR) as is common with many other regulators. The LT3032’s internal protection circuitry includes reverse-output protection, current limiting and thermal limiting.

The LT3032 MP grade is available with an operating junction temperature of -55 to +125°C in both adjustable and fixed (±5V, ±12V and ±15V) versions in a 14-lead 4 x 3mm DFN package, offering a compact footprint. The device is available from stock and 1,000 piece pricing starts at $5.95.