LTC3025
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LTC3025

300mA Micropower VLDO Linear Regulator

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $1.66
Features
  • Wide Input Voltage Range: 0.9V to 5.5V
  • Stable with Ceramic Capacitors
  • Very Low Dropout: 45mV at 300mA
  • Adjustable Output Range: 0.4V to 3.6V
  • ±2% Voltage Accuracy over Temperature Supply Load
  • Low Noise: 80μVRMS (10Hz to 100kHz)
  • BIAS Voltage Range: 2.5V to 5.5V
  • Fast Transient Recovery
  • Shutdown Disconnects Load from VIN and VBIAS
  • Low Operating Current: IIN = 4μA, IBIAS = 50μA Typ
  • Low Shutdown Current: IIN = 1μA, IBIAS = 0.01μA Typ
  • Output Current Limit
  • Thermal Overload Protection
  • Available in 6-Lead (2mm × 2mm) DFN Package
Additional Details
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The LTC3025 is a micropower, VLDO (very low dropout) linear regulator which operates from input voltages as low as 0.9V. The device is capable of supplying 300mA of output current with a typical dropout voltage of only 45mV. A BIAS supply is required to run the internal reference and LDO circuitry while output current comes directly from the IN supply for high efficiency regulation. The low 0.4V internal reference voltage allows the LTC3025 output to be programmed to much lower voltages than available in common LDOs (range of 0.4V to 3.6V). The output voltage is programmed via two ultrasmall SMD resistors.

The LTC3025’s low quiescent current makes it an ideal choice for use in battery-powered systems. For 3-cell NiMH and single cell Li-Ion applications, the BIAS voltage can be supplied directly from the battery while the input can come from a high efficiency buck regulator, providing a high efficiency, low noise output.

Other features include high output voltage accuracy, excellent transient response, stability with ultralow ESR ceramic capacitors as small as 1μF, short-circuit and thermal overload protection and output current limiting. The LTC3025 is available in a tiny, low profile (0.75mm) 6-lead DFN (2mm × 2mm) package.

Output Current Output Voltage
LTC3025 300mA Adj (0.4V to 3.6V)
LTC3025-1 500mA Adj (0.4V to 3.6V)
LTC3025-2 500mA 1.2V Fixed
 LTC3025-3 500mA 1.5V Fixed
LTC3025-4 500mA 1.8V Fixed

APPLICATIONS

  • Low Power Handheld Devices
  • Low Voltage Logic Supplies
  • DSP Power Supplies
  • Cellular Phones
  • Portable Electronic Equipment
  • Handheld Medical Instruments
  • Post Regulator for Switching Supply Noise Rejection

Part Models 4
1ku List Price Starting From $1.66

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC3025EDC#TRMPBF
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LTC3025EDC#TRPBF
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LTC3025IDC#TRMPBF
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LTC3025IDC#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC741A

LTC3025EDC Demo Board | Low VIN, VLDO Line ar Regulator, 0.9V ≤ VIN ≤ 5.5V, VOUT = 0.8V/1.2V/1.5V/1.8V/Adj @ 300mA

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DC741A

LTC3025EDC Demo Board | Low VIN, VLDO Line ar Regulator, 0.9V ≤ VIN ≤ 5.5V, VOUT = 0.8V/1.2V/1.5V/1.8V/Adj @ 300mA

LTC3025EDC Demo Board | Low VIN, VLDO Line ar Regulator, 0.9V ≤ VIN ≤ 5.5V, VOUT = 0.8V/1.2V/1.5V/1.8V/Adj @ 300mA

Product Detail

Demonstration circuit 741 is an ultralow dropout voltage supply using the 300mA output current LTC3025 linear regulator in the small 2mm x 2mm 6-Pin DFN package. The DC741 has an input voltage range from 0.9V to 5.5V and a jumper-selectable output voltage of 0.8V, 1.2V, 1.5V, 1.8V or a user-defined value between 0.4V and 3.6V.


The 0.4V reference of the LTC3025 allows the DC741 to supply power to very low voltage applications. The DC741 is also an excellent choice for post-regulation of step-down switching regulators, creating a high efficiency low-noise supply. The DC741 comes assembled with small ceramic capacitors, showing the LTC3025's ability to maintain stability with ceramic output capacitors.

Tools & Simulations

Tools & Simulations 1

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.

Reference Designs

Reference Designs 4

DK-DEV-5CEA7N Dev Kit

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altera-cyclone-v-e-development-kit

altera-cyclone-v-e-development-kit

Circuits from the lab

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Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
View Detailed Reference Design external link
DK-START-5AGXB3N Starter Kit

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altera-arria-v-gx-starter-kit

altera-arria-v-gx-starter-kit

Circuits from the lab

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Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
View Detailed Reference Design external link
DE5-Net Dev Kit

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terasic-de5-net-stratix-v-board

terasic-de5-net-stratix-v-board

Circuits from the lab

tooltip Info:Circuits from the lab

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
View Detailed Reference Design external link
DK-SI-4SGX230N Kit

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Altera Transceiver Signal Integrity Kit, Stratix IV GX Edition

Altera Transceiver Signal Integrity Kit, Stratix IV GX Edition

Circuits from the lab

tooltip Info:Circuits from the lab

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
View Detailed Reference Design external link

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