Low Dropout Regulator has 0-40 V output voltage range.July 27, 2007 -
Model LT3080 1.1 A 3-terminal LDO offers paralleling for heat spreading and adjustability with one single resistor. Features include multi-amp linear regulation in surface-mount systems without heat sinks, input voltage capability ranging from 1.2-40 V, full load low dropout voltage of 300 mV, and on-chip trimmed reference with an accuracy of ±1%. Available in 0.75 mm, 3x3 mm 8-lead DFN, 8-lead thermally enhanced MSOP, and 3-lead SOT-223 packages.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Linear Technology Corp.
1630 McCarthy Blvd.
Milpitas, CA, 95035
USA
Surface Mount 1.1A LDO Is Easily Paralleled For High I OUT Without Hot Spots
MILPITAS, CA - July 23, 2007 - Linear Technology Corporation announces the LT3080, a 1.1A 3-terminal LDO that may be easily paralleled for heat spreading and is adjustable with a single resistor. This new architecture regulator uses a current reference to allow sharing between multiple regulators with a small length of PC trace as ballast, enabling multi-amp linear regulation in all surface-mount systems without heat sinks.
The LT3080 achieves high performance without any compromises. Featuring wide input voltage capability from 1.2-40 V, it has a low dropout voltage of only 300 mV at full load. The output voltage is adjustable, spanning a wide range from 0-40 V, and the on-chip trimmed reference achieves high accuracy of ±1%. The wide VIN & VOUT capability, tight line and load regulation, high ripple rejection, low external parts count and parallel capability make it ideal for modern multi-rail systems.
According to Linear Technology's VP/CTO Robert Dobkin, "The LT3080 regulator allows designers to have an all-surface mount solution in high current, noise-sensitive applications such as high-frequency serial data links. Also, with the ability to provide zero output, it can control powering down parts of the system. Having the collector of the pass transistor available further enhances the options of spreading the heat."
The LT3080 is offered in a variety of thermally-enhanced surface-mount compatible packages including the low profile (0.75 mm) 8-lead DFN (3 mm x 3 mm), an 8-lead
thermally-enhanced MSOP, and simple-to-use 3-lead SOT-223 package. These packages are able to dissipate 1-2 W in surface mount applications without a heat sink. In addition, the device is housed in a TO-220 power package for mounting to heat sinks for higher power dissipation. 1,000-piece pricing starts at $1.88, $1.94, $1.81 and $2.20 each, respectively.
Summary of Features: LT3080
oOutputs May be Paralleled for Higher Output Current or Spreading PCB Heat
oLow Dropout Voltage: 300 mV
oLow Noise: 40 µVRMS Wideband (100 kHz)
oStable 10 µA Current Source Reference
oSingle-Resistor Programs VOUT
oAdjustable VOUT Range: 0-40 V
oWide VIN Range: 1.2-40 V (VCONTROL(IN))
oOutput Current: 1.1 A
oStable with Ceramic, Aluminum, or Tantalum Capacitors
oCurrent Limiting
oThermal Limiting
o8-Lead Low-Profile DFN (3 mm x 3 mm x 0.75 mm) Package
oThermally Enhanced 8-Lead MSOP Package
o5-Lead TO-220 Package
oSimple-to-Use 3-Lead SOT-223 Package
About Linear Technology
Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, and many other analog functions. Applications for Linear Technology's high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems. For more information, visit www.linear.com
Press Contacts: John Hamburger, Director Marketing Communications jhamburger@linear.com
Tel: 408-432-1900 ext 2419 Doug Dickinson, Media Relations Manager ddickinson@linear.com Tel: 408-432-1900 ext 2233
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