LT3027 - Dual 100mA, Low Dropout, Low Noise, Micropower Regulator with Independent Inputs

Features

  • Low Noise: 20µVRMS (10Hz to 100kHz)
  • Low Quiescent Current: 25µA/Channel
  • Independent Inputs
  • Wide Input Voltage Range: 1.8V to 20V
  • Output Current: 100mA/Channel
  • Very Low Shutdown Current: <0.1µA
  • Low Dropout Voltage: 300mV at 100mA
  • Adjustable Output from 1.22V to 20V
  • Stable with 1µF Output Capacitor
  • Stable with Aluminum, Tantalum or Ceramic Capacitors
  • Reverse Battery Protected
  • No Protection Diodes Needed
  • Overcurrent and Overtemperature Protected
  • Tracking/Sequencing Capability
  • Thermally Enhanced 10-Lead MSOP and DFN Packages
Designed for Automotive and Transportation Applications
AEC-Q100 generic family data available for specific packages


Typical Application

LT3027 Typical Application
LT3027 Typical Application

Description

The LT3027 is a dual, micropower, low noise, low dropout regulator with independent inputs. With an external 0.01µF bypass capacitor, output noise is a low 20µVRMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 25µA quiescent current per channel makes it an ideal choice. In shutdown, quiescent current drops to less than 0.1µA. Shutdown control is independent for each channel, allowing for flexibility in power management. The device is capable of operating over an input voltage from 1.8V to 20V, and can supply 100mA of output current from each channel with a dropout voltage of 300mV. Quiescent current is well controlled in dropout.

The LT3027 regulator is stable with output capacitors as low as 1µF. Small ceramic capacitors can be used without the series resistance required by other regulators.

Internal protection circuitry includes reverse battery protection, current limiting and thermal limiting protection. The device is available as an adjustable device with a 1.22V reference voltage. The LT3027 regulator is available in the thermally enhanced 10-lead MSOP and low profile (0.75mm) 3mm × 3mm DFN packages.

Protected by U.S. Patents, including 6118263, 6144250.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LT3027EDD#PBF 3x3 DFN-10 DD E 05-08-1699 Yes
LT3027EDD#TRPBF 3x3 DFN-10 DD E 05-08-1699 Yes
LT3027EMSE#PBF MS-10E MSE E 05-08-1664 Yes
LT3027EMSE#TRPBF MS-10E MSE E 05-08-1664 Yes
LT3027IDD#PBF 3x3 DFN-10 DD I 05-08-1699 Yes
LT3027IDD#TRPBF 3x3 DFN-10 DD I 05-08-1699 Yes
LT3027IMSE#PBF MS-10E MSE I 05-08-1664 Yes
LT3027IMSE#TRPBF MS-10E MSE I 05-08-1664 Yes


LT3027 Package Drawing
LT3027 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3027EDD#PBF 3x3 DFN-10 E $2.08 $1.75 Yes
LT3027EDD#TRPBF 3x3 DFN-10 E $1.85 Yes
LT3027EMSE#PBF MS-10E E $1.96 $1.65 Yes
LT3027EMSE#TRPBF MS-10E E $1.71 Yes
LT3027IDD#PBF 3x3 DFN-10 I $2.50 $2.10 Yes
LT3027IDD#TRPBF 3x3 DFN-10 I $2.16 Yes
LT3027IMSE#PBF MS-10E I $2.36 $1.98 Yes
LT3027IMSE#TRPBF MS-10E I $2.08 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC811A LT3027EDD Demo Board | Dual Input, Dual Micropower Low Noise LDO Regulator, 2.3V ≤ VIN ≤ 20V, Vout1 = Vout2 = 2.5V/3.3V/5V @ 100mA $125.00
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Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

Please contact your local sales representative for more information regarding reliability reports and AEC-Q100 data or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3027IDD#PBF 3x3 DFN-10 I $2.50 $2.10 Yes
LT3027IDD#TRPBF 3x3 DFN-10 I $2.16 Yes
LT3027IMSE#PBF MS-10E I $2.36 $1.98 Yes
LT3027IMSE#TRPBF MS-10E I $2.08 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

  • Cellular Phones
  • Pagers
  • Battery-Powered Systems
  • Frequency Synthesizers
  • Wireless Modems
  • Tracking/Sequencing Power Supplies

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Design Tools

LTspice

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Models for the following parts are available in LTspice:
LT3027

Technical Support