LTC3025

PRODUCTION

300mA Micropower VLDO Linear Regulator

Data Sheet (Rev. E) Product Selection Table

Part Models: 4
1ku List Price: Starting From $1.66

Viewing:

Part Details

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: 80μV_RMS (10Hz to 100kHz)
BIAS Voltage Range: 2.5V to 5.5V

Fast Transient Recovery
Shutdown Disconnects Load from V_IN and V_BIAS
Low Operating Current: I_IN = 4μA, I_BIAS = 50μA Typ
Low Shutdown Current: I_IN = 1μA, I_BIAS = 0.01μA Typ
Output Current Limit
Thermal Overload Protection
Available in 6-Lead (2mm × 2mm) DFN Package

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

Documentation

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC3025EDC#TRMPBF	6-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3025EDC#TRPBF	6-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3025IDC#TRMPBF	6-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3025IDC#TRPBF	6-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Digital Power System Managers 1
LTC2974	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Single-Supply Monitors 1
LTC2935	PRODUCTION	Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds

Tools & Simulations

LTspice 3

Models for the following parts are available in LTspice:

LTC3025
LTC3025-1
LTC3025-2
LTC3025-3
LTC3025-4

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.

Evaluation Kits

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

Buy Now View Details

Product Details

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.

Resources

DC741A - Demo Manual
382.00K

DC741A - Schematic
126.00K

DC741A - Design File
699.00K

Reference Designs

View Detailed Reference Design

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

Part Used

View Detailed Reference Design

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

Part Used

LTC3026-1

LTC3025-1
LTC3025-2
LTC3025-3
LTC3025-4

View Detailed Reference Design

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

Part Used

View Detailed Reference Design

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

Part Used

Latest Discussions

3 Years Ago

4 Years Ago

LTC3025

Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Application Note 1

Technical Articles 1

Solutions Bulletin & Brochure 1

Press Release 1

Hardware Ecosystem

Tools & Simulations

LTspice 3

Models for the following parts are available in LTspice:

Evaluation Kits

Product Details

Resources

Reference Designs

Features and Benefits

Part Used

Features and Benefits

Part Used

Features and Benefits

Part Used

Features and Benefits

Part Used

Latest Discussions

Recently Viewed