3-A LDO is easily paralleled for high output current without any hot spots
February 09, 2011 // Paul Buckley
Linear Technology Corporation has unveiled a 3 A LDO that can be paralleled for heat spreading and higher output current, and is adjustable with a single resistor. The LT3083 regulator is based on the same innovative architecture as its 1.1 A predecessor, the LT3080, which uses a current source reference for single resistor output voltage setting. With the SET pins tied together, sharing the current and spreading the heat is accomplished between multiple regulators using a small length of PC trace as ballast, enabling multi-amp linear regulation in all surface-mount systems without heat sinks.
The LT3083 achieves unmatched regulation of under 2 mV at any output voltage. Featuring wide input voltage range from 1.2 V to 18 V (DD-Pak and TO-220 packages), the full current dropout is only 310 mV (when operating with a separate bias supply). The output voltage is programmable with a single resistor from 0V to 17.5 V, and the on-chip trimmed 50 µA current reference is trimmed to ±1%.
The regulation and output noise (40 µVrms) is independent of output voltage due to the device’s voltage follower architecture. The high output current, wide VIN and VOUT capability, tight line and load regulation, high ripple rejection, low external parts count and paralleling capability make the LT3083 ideal for modern higher-current, multi-rail systems.
Availability and Pricing
The LT3083 is offered in a variety of thermally enhanced surface-mount compatible packages, including a low profile (0.75 mm) 12-lead 4 mm x 4 mm DFN and a 16-lead thermally enhanced TSSOP; both dissipate 2 W in surface mount applications with no heat sink.
The LT3083 is also available in 5-lead TO-220 and DD-Pak power packages for mounting to heat sinks for higher power dissipation. 1,000-piece pricing starts at $3.80, $4.40 and $10.26 for the DFN package in E, I and MP grades respectively, and at $3.93, $4.53 and $10.62 for the TSSOP package E, I and MP grades, respectively. 1k pricing for the TO-220 and DD-Pak power packages is at $4.13, $4.73 and $11.16 for the E, I and MP grades respectively.
More information about the LT3083 LDO at www.linear.com/3083
Visit Linear Technology at www.linear.com
Rohm's European Design Center in growth phase
November 21, 2014
At Electronica EE Times Europe caught up with Michael Davis European R&D director at the European Design Center (EDC) of ...
Combo inertial sensor market on 19% CAGR, says Yole.
US, China pushing industrial chip market growth, says IHS
LA Auto Show: Hydrogen fuel cell drive is back
Opening up the IoT data flood gates
Polarizing filter reduces energy drain from smartphone displays
November 21, 2014
A polarizing filter has been developed by University of Utah engineers which allows in more light, leading the way for mobile ...
From warm to cool white: colour-temperature tunable LEDs
System provides high-volume solution for flexible OLED displays
Isabellenhütte diversifies channels, clientele
- Halogen-free options and increased performance for terminal blocks
- Wireless Power User Guide
- Secure is the New Smart
- 5 Best Practices for Designing Flexible Test Stations
InterviewFreescale CEO: 'IoT isn't just buzz'
Coming after the solid third quarter results that produced higher operating margins and improving cash flow, Freescale Semiconductor's CEO Gregg Lowe had every reason to be chipper and lively when EE Times ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Cherry is giving away five of its Energy Harvesting Evaluation kits, worth over 266 Euros each, for EETimes Europe's readers to win. Cherry's energy harvesting technology benefit mostly applications where a complex wire assembly and/or batteries would be inappropriate.
The required RF-energy is created by the mechanical actuation of the switch and the data is transmitted...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.
Most popular news
- Could magnesium battery innovation end lithium's dominance?
- From warm to cool white: colour-temperature tunable LEDs
- Li-Fi communication module wirelessly transfers data at 1-Gbps
- Supercapacitor innovation promises panel-powered cars in five years
- Rebranding the revolution: the future of IoT is embedded