Tiny High Voltage LDO from Linear Technology Has 3uA IQ

The device’s ultralow quiescent and shutdown (<1uA) currents make it an excellent choice for applications requiring moderate output drive capability and high input voltage, coupled with ultralow standby power consumption, such as remote monitoring and low-current battery-powered memory for keep alive systems that require extended run times.

The LT3008 regulator optimizes stability and transient response with low ESR, ceramic output capacitors as small as 2.2uF. These tiny external capacitors can be used without the need of series resistance, as is common with many other regulators. Internal protection circuitry includes reverse-battery protection, reverse output and reverse output-to-input protection, current limiting, and thermal limiting.