Overview

Features and Benefits

  • 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

Product Details

The LTC3026-1 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


Applications

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

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, 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.

LTspice

Models for the following parts are available in LTspice:

LTC3026
LTC3026-1

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

LTPowerCAD

Design tools for the following parts are available in LTpowerCAD:

LTC3026

Product Recommendations

LTC3026-1 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Discussions

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Sample & Buy

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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 Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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