Energy-harvesting tool targets low energy sources
Linear Technologycontact supplier
LTC3588-1 energy-harvesting solution
Linear Technology has announced the LTC3588-1, a complete energy-harvesting solution that is optimised for low energy sources, including piezoelectric transducers.
The LTC3588-1 integrates a low-loss, full-wave bridge rectifier with a high-efficiency buck converter to harvest ambient vibrational energy via piezoelectric transducers and then convert it to a well-regulated output to power application microcontrollers, sensors, data converters and wireless transmission components.
The LTC3588-1 operates from an input voltage range of 2.7 to 20V, making it suitable for a range of piezoelectric transducers, as well other high output impedance energy sources.
Its high-efficiency buck DC/DC converter delivers up to 100mA of continuous output current or even higher pulsed loads.
Its output can be programmed to one of four (1.8, 2.5, 3.3 or 3.6V) fixed voltages to power a wireless transmitter or sensor.
Quiescent current is 950nA with the output in regulation (at no load), maximising overall efficiency.
The LTC3588-1 is designed to interface directly with a piezoelectric or alternative AC power source, rectify a voltage waveform and store harvested energy in an external storage capacitor while dissipating any excess power via an internal shunt regulator.
An ultralow quiescent current (450nA) undervoltage lockout (UVLO) mode with a wide hysteresis window enables charge to accumulate on the storage capacitor until the buck converter can efficiently transfer a portion of the stored charge to the output.
In its no-load sleep state, the LTC3588-1 regulates the output voltage, consuming 950nA of quiescent current while continuously charging the storage capacitor.
The LTC3588-1 requires minimal external components and is packaged in a 3 x 3mm DFN or a thermally enhanced MSOP-10 package, providing a compact solution footprint for a range of energy-harvesting applications.
The LTC3588EDD-1 is available in a 3 x 3mm DFN package and the LTC3588EMSE-1 is available in a thermally enhanced MSOP-10 package.
The LTC3110 is a 2A bidirectional buck-boost DC/DC regulator with capacitor charger and balancer. Its wide 0.1V to 5.5V capacitor/battery voltage and 1.8V to 5.25V system backup voltage ranges make it well suited to a wide variety of backup applications using supercapacitors or batteries.
Linear Technology has introduced the LTC3110, a bidirectional, programmable input current buck-boost supercapacitor charger with active charge balancing for one- or two-series supercapacitors.
Linear Technology has launched the LTM4675, a dual 9A or single 18A, µModule(micromodule) step-down DC/DC regulator with PMBus serial digital interface in a small 11.9mm x 16mm x 3.51mm BGA package.
Linear Technology has introduced the LTC2348-18, an 18-bit, eight-channel simultaneous sampling successive approximation register (SAR) analogue-to-digital (ADC) offering excellent performance and flexibility. The LTC2348-18 is suitable for high-performance industrial process control, test and measurement, power line monitoring, instrumentation and automatic test equipment applications.
Linear Technology’s LTC2379-18 uses SAR ADC technology, achieving 18-bit performance at 1.6Msps with 101dB SNR. In this video, a designer of the LTC2379-18 demonstrates the performance of the device and shares his insights into the design of this 18-bit ADC.