High voltage, low noise LDO offers programmable current limit
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Linear Technology has announced the LT3065, a high voltage, low noise, low dropout voltage linear regulator offering precision, programmable current limit and a power good flag.
The device delivers up to 500mA output current with a 300mV dropout voltage at full load. It features a wide 1.8 to 45V input voltage range and output voltage is adjustable from 0.6 to 40V.
A single REF/BYP pin capacitor provides low noise operation of only 25µVRMS across a 10Hz to 100kHz bandwidth, and also reference soft-start functionality, preventing output voltage overshoot at turn-on. Output voltage tolerance is rated at ±2% over line, load and temperature.
The LT3065 operates with a small, low cost 3.3µF ceramic output capacitor, optimising stability and transient response. The LT3065 PWRGD flag indicates output regulation. One resistor programs the external precision current limit (±10% over temperature).
Moreover, the device's internal protection circuitry includes reverse-battery protection, reverse-output protection, reverse-current protection, current limit with foldback and thermal limiting.
The LT3065 is available in thermally enhanced, 10-lead, 3 x 3mm DFN and 12-lead MSOP packages.
