Linear Technology LT3008 Features
The Linear Technology LT3008 is a high-voltage, micropower, and tiny LDO with ultralow quiescent current of only 3uA. The device is suitable for applications that require moderate output drive capability and high input voltage applications and ultra low standby power consumption.
The IC provides up to 20mA of output current with a corresponding low dropout voltage of only 300mV. The output tolerance is tightly regulated to within ± 2% over the full voltage, load and temperature range. Its high input voltage capability, ranging from 2.0V to 45V, and has an adjustable output voltage range of 0.6V to 36V.
The device's ultra-low quiescent current and shutdown current (<1uA) make it well suited for applications that require moderate output drive capability and high input voltage and ultra low standby power, such as remote monitoring and "keep-alive" System low-current battery-powered memory. The LT3008 regulator is optimized for stability and transient response with a low ESR, ceramic output capacitor down to 2.2uF.
These tiny external capacitors eliminate the need for many series resistors commonly found in other regulators. The internal protection circuitry includes reverse battery protection, reverse output and reverse output to input protection, current limiting, and thermal limiting.
The LT3008EDC and LT3008IDC are available in a flat (0.75mm) 6-lead DFN (2mm x 2mm) package with a back thermal pad, while the LT3008ETS8 and LT3008ITS8 are packaged in an 8-lead SOT-23 and fused to a ground pad to enhance Thermal performance.
Linear Technology LT3008 Performance Summary:
Output Tolerance: ± 2% over voltage, load, and temperature range
Ultra-low quiescent current: 3uA (typical)
Low Dropout Voltage: Typically 300mV at full load
Output current: 20mA
Ceramic output capacitors (minimum 2.2uF) are stable with low ESR
Shutdown current: <1uA
Reverse battery, reverse output and reverse output to input protection
Thermal limiting and current limiting protection
6-pin thermally enhanced DFN (2mm x 2mm x 0.75mm) package
8-pin thermally enhanced TSOT-23 package
VIN range: 2.0V to 45V
Adjustable VOUT: 0.6V to 36V