Linear Technology’s LT3081 is a rugged 1,5 A linear regulator with an extended safe operating area (SOA), making it ideal for high input-to-output voltage and high output current applications where older regulators limit the output.
It uses a current source reference for single-resistor output voltage settings and output adjustability down to ‘0’. Output current limit can be set externally with a single resistor.
The regulator architecture, combined with low millivolt regulation, enables multiple ICs to be paralleled easily for heat spreading and higher output current. The current from the device’s current monitor can be summed with the set current for line-drop compensation, where the output of the LT3081 increases with current to compensate for line drops.
The IC achieves line and load regulation of under 2 mV independent of output voltage and features an input voltage range from 1,2 V to 40 V. The device fits well in applications requiring multiple rails. Output voltage is programmable with a single resistor from 0 V to 38,5 V with a 1,2 V dropout. The on-chip trimmed 50 μA current reference is ±1% accurate.
The regulation, transient response and output noise (30 μVrms) are independent of output voltage due to the device’s voltage follower architecture. The LT3081 is configurable as a 2-terminal current source with just two resistors. Input or output capacitors for stability are optional in either linear regulator or current-source mode of operation.
The device provides several monitoring and protection functions. Current limit, accurate to ±10%, can be programmed with a single resistor. Monitor outputs provide a current output proportional to temperature (1 μA/°C) and output current (200 μA/A), allowing easy ground-based measurement. The current monitor can be used to compensate for cable drops. The LT3081’s internal protection circuitry includes reverse input protection, reverse current protection, internal current limiting and thermal shutdown.
Analysis of switch-mode power supply: inductor violations Altron Arrow
Editor's Choice Power Electronics / Power Management
Common switch-mode power supply (SMPS) design errors are discussed, and their appropriate rectification is specified, with details on complications that arise with the power stage design of DC-DC switching regulators.
Read more...Microsoft Windows IoT on ARM Altron Arrow
Computer/Embedded Technology
This expansion means that the Windows IoT ecosystem can now harness the power of ARM processors, known for their energy efficiency and versatility.
Read more...Microchip introduces ECC608 TrustMANAGER Altron Arrow
Circuit & System Protection
To increase security on IoT products and facilitate easier setup and management, Microchip Technology has added the ECC608 TrustMANAGER with Kudelski IoT keySTREAM, Software as a Service (SaaS) to its Trust Platform portfolio of devices, services and tools.
Read more...SolidRun unveils new SoM Altron Arrow
AI & ML
SolidRun and Hailo has unveiled a game-changer for engineers and AI product developers with the launch of their market-ready SoM, which packs the cutting-edge capabilities of the Hailo-15H SoC.
Read more...An evolutionary step in customisable logic Altron Arrow
DSP, Micros & Memory
Microchip Technology is offering a tailored hardware solution with the launch of its PIC16F13145 family of microcontrollers, which are outfitted with a new Configurable Logic Block module.
Read more...Compact PCB-mount SMPS RS South Africa
Power Electronics / Power Management
Traco Power’s 5W PCB-mount switch mode power supply (SMPS) offers high efficiency, and is well suited for a variety of applications in the automation, electronics, electrical and mechanical industries.
Read more...AC-DC brick PSU Conical Technologies
Power Electronics / Power Management
These PSUs have a typical efficiency of up to 92%, and a power factor value of up to 0,99. They are available in 12, 24, 28, 48 and 54 V output versions.
Read more...5 kW switching PSU range Conical Technologies
Power Electronics / Power Management
Mornsun has released a new switching power supply range, the LMF5000-25Bxx, which has a 5000 W capacity, and features universal AC input configurations.
printer friendly version