LT3080IST

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The LT3080IST is an adjustable low dropout linear regulator manufactured by Analog Devices Inc., housed in a DFN-8 package. It delivers up to 1.1A output current with an input voltage range of 1.2V to 36V and an adjustable output voltage from 0V to 36V. The device features a typical dropout voltage of 350mV and a maximum of 500mV. Operating supply current is 300µA, with line regulation at 0.003mV/V and load regulation at 0.6mV. It operates within a temperature range of -40°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Single resistor adjustable output configuration using a precision 10µA current source
• Capable of parallel operation to increase output current or distribute thermal load
• Integrated protection against overcurrent, thermal overload, and short circuits

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• High current power supplies requiring zero output adjustability
• Battery-powered systems needing low quiescent current
• Industrial equipment requiring heat dissipation across multiple devices

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'IST' against official Analog Devices documentation to confirm the exact package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and lead times before finalizing procurement plans.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this regulator when designing circuits that require high efficiency with minimal external components. The single-resistor adjustment simplifies PCB layout compared to traditional feedback networks. Consider thermal management strategies if paralleling multiple units, as the device supports current sharing without ballast resistors. Verify input voltage constraints relative to the desired output level.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This component belongs to the LT3080 family of low dropout regulators known for their programmable current limit and high PSRR. Unlike fixed-output variants, this model offers full adjustability down to 0V. It serves as a drop-in replacement for standard LDOs in applications demanding precise voltage control and robust protection features within a compact surface-mount footprint.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

LT3080EST#PBF

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

How is the output voltage adjusted?

The output voltage is set by connecting a single external resistor between the SET pin and ground, utilizing the internal 10µA precision current source.

Can multiple units be paralleled?

Yes, the LT3080 can be paralleled to increase output current capacity or to spread thermal dissipation across the PCB without requiring ballast resistors.