LT1965

RECOMMENDED FOR NEW DESIGNS

1.1A, Low Noise, Low Dropout Linear Regulator

Data Sheet Product Selection Table
Part Models
74
1ku List Price
Starting From $2.28
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Part Details

  • Output Current: 1.1A
  • Dropout Voltage: 310mV
  • Low Noise: 40μVRMS (10Hz to 100kHz)
  • 500μA Quiescent Current (Adjustable Version)
  • Wide Input Voltage Range: 1.8V to 20V
  • No Protection Diodes Needed
  • Controlled Quiescent Current in Dropout
  • Adjustable Output from 1.20V to 19.5V
  • Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V
  • < 1μA Quiescent Current in Shutdown
  • Stable with 10μF Output Capacitor
  • Stable with Ceramic or Tantalum Capacitors
  • Reverse-Battery Protection
  • No Reverse Current
  • Current Limit with Foldback Protection
  • Thermal Limiting
  • 5-Lead TO-220, DD-Pak, Thermally Enhanced 8-Lead MSOP and 8-Lead 3mm × 3mm DFN Packages
LT1965
1.1A, Low Noise, Low Dropout Linear Regulator
3.3V to 2.5V Regulator Dropout Voltage Product Package 1 Product Package 2 Product Package 3 Product Package 4
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 1

Technical Articles 1

Data Sheet

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

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Positive Linear Regulators (LDO) 1
LT3080
RECOMMENDED FOR NEW DESIGNS Adjustable 1.1A Single Resistor Low Dropout Regulator
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Tools & Simulations

LTspice 3

Models for the following parts are available in LTspice:

  • LT1965
  • LT1965-1.5
  • LT1965-1.8
  • LT1965-2.5
  • LT1965-3.3
  • LT1965B
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.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC1172A

LT1965EDD Demo Board | Low Noise, Low Dropout Linear Regulator, 2.3V ≤ VIN ≤ 20V, VOUT = 1.2V/1.5V/1.8V/2.5V/3.3V @ 1.1A

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Product Details

Demonstration circuit 1172A is a low dropout linear regulator featuring the LT1965 in the 3 × 3 DFN-8 package. The demo board has an input voltage range from 2.3V to 20V, and is capable of delivering up to 1.1A of output current. The output voltage is jumper-selectable and can be set to 1.2V, 1.5V, 1.8V, 2.5V, 3.3V or a user-determined value.
DC1172A
LT1965EDD Demo Board | Low Noise, Low Dropout Linear Regulator, 2.3V ≤ VIN ≤ 20V, VOUT = 1.2V/1.5V/1.8V/2.5V/3.3V @ 1.1A
DC1172A Demo Board DC1172A Demo Board DC1172A Demo Board DC1172A Demo Board DC1172A - Schematic

Reference Designs

Arria 10 (Rev E3- Linear Technology) Dev Kit
Arria 10 (Rev E3- Linear Technology) Dev Kit
Arria 10 FPGA Development Kit (Power Tree Representative of Actual Components Used on Board)
Simplied Power Tree that directly steps down 12V to required I/O voltage
Arria 10 (Rev E3- Linear Technology) Dev Kit Block Diagram
Altera Arria 10 FPGA Development Kit Circuits from the lab

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
Altera Arria 10 FPGA Development Kit
Arria 10 (Rev E3- Linear Technology) Dev Kit
Arria 10 FPGA Development Kit (Power Tree Representative of Actual Components Used on Board)
Simplied Power Tree that directly steps down 12V to required I/O voltage
Arria 10 (Rev E3- Linear Technology) Dev Kit Block Diagram

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