LTC3026-1 - 1.5A Low Input Voltage VLDO Linear Regulator

Features

  • Input Voltage Range: 1.14V to 5.5V
  • Low Dropout Voltage: 100mV at IOUT = 1.5A
  • Adjustable Output Range: 0.4V to 2.6V
  • Output Current: Up to 1.5A
  • Excellent Supply Rejection Even Near Dropout
  • Shutdown Disconnects Load from VIN and VBST
  • Low Operating Current:
    IIN = 95μA at VIN = 1.5V
    IBIAS = 175μA at VBIAS = 5V
  • Low Shutdown Current:
    IIN < 1μA (Typ), IBST = 0.1μA (Typ)
  • Stable with 10μF or Greater Ceramic Capacitors
  • Short-Circuit, Reverse Current Protected
  • Overtemperature Protected
  • Available in 10-Lead MSOP and 10-Lead (3mm × 3mm) DFN Packages

Typical Application

LTC3026-1 Typical Application
LTC3026-1 Typical Application

Description

The LTC®3026-1 is a very low dropout (VLDO™) linear regulator that can operate at input voltages down to 1.14V. The device is capable of supplying 1.5A of output current with a typical dropout voltage of only 100mV. Output current comes directly from the input supply to maximize efficiency.

The LTC3026-1 is the same as the LTC3026 but has the boost converter internally disabled. With the boost converter disabled, the SW pin of the LTC3026 is replaced with a ground pin and the BST pin is replaced with a BIAS pin that requires an external 5V supply for operation.

The LTC3026-1 regulator is stable with 10μF or greater ceramic output capacitors. The device has a low 0.4V reference voltage which is used to program the output voltage via two external resistors. The device also has internal current limit, overtemperature shutdown, and reverse output current protection. The LTC3026-1 is available in a small 10-lead MSOP or low profile (0.75mm) 10-lead 3mm × 3mm DFN package.

  Features
LTC3026 Integrated boost converter
LTC3026-1 Boost converter internally disabled and requires an external 5V supply to operate

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
LTC3026EDD-1#PBF 3x3 DFN-10 DD E 05-08-1699 Yes
LTC3026EDD-1#TRPBF 3x3 DFN-10 DD E 05-08-1699 Yes
LTC3026EMSE-1#PBF MS-10E MSE E 05-08-1664 Yes
LTC3026EMSE-1#TRPBF MS-10E MSE E 05-08-1664 Yes
LTC3026IDD-1#PBF 3x3 DFN-10 DD I 05-08-1699 Yes
LTC3026IDD-1#TRPBF 3x3 DFN-10 DD I 05-08-1699 Yes
LTC3026IMSE-1#PBF MS-10E MSE I 05-08-1664 Yes
LTC3026IMSE-1#TRPBF MS-10E MSE I 05-08-1664 Yes


LTC3026-1 Package Drawing
LTC3026-1 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
LTC3026EDD-1#PBF 3x3 DFN-10 E $3.14 $2.20 Yes
LTC3026EDD-1#TRPBF 3x3 DFN-10 E $2.26 Yes
LTC3026EMSE-1#PBF MS-10E E $3.14 $2.20 Yes
LTC3026EMSE-1#TRPBF MS-10E E $2.26 Yes
LTC3026IDD-1#PBF 3x3 DFN-10 I $3.46 $2.42 Yes
LTC3026IDD-1#TRPBF 3x3 DFN-10 I $2.48 Yes
LTC3026IMSE-1#PBF MS-10E I $3.46 $2.42 Yes
LTC3026IMSE-1#TRPBF MS-10E I $2.48 Yes
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* 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.

Click here to view our complete list of demo boards

Applications

  • High Efficiency Linear Regulator
  • Post Regulator for Switching Supplies
  • Microprocessor Supply

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice:
LTC3026
LTC3026-1

Technical Support