LT1761
Info : RECOMMENDED FOR NEW DESIGNS
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LT1761

100mA, Low Noise, LDO Micropower Regulators in TSOT-23

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 50
1ku List Price Starting From $1.31
Features
  • Low Noise: 20μVRMS (10Hz to 100kHz)
  • Low Quiescent Current: 20μA
  • Wide Input Voltage Range: 1.8V to 20V
  • Output Current: 100mA
  • Very Low Shutdown Current: <0.1μA
  • Low Dropout Voltage: 300mV at 100mA
  • Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2V, 2.5V, 2.8V, 3V, 3.3V, 5V
  • Adjustable Output from 1.22V to 20V
  • Stable with 1μF Output Capacitor
  • Stable with Aluminum, Tantalum or Ceramic Capacitors
  • Reverse-Battery Protected
  • No Reverse Current
  • No Protection Diodes Needed
  • Overcurrent and Overtemperature Protected
  • Available in Tiny 5-Lead TSOT-23 Package
Additional Details
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The LT1761 series are micropower, low noise, low dropout regulators. With an external 0.01μF bypass capacitor, output noise drops to 20μVRMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 20μA quiescent current makes them an ideal choice. In shutdown, quiescent current drops to less than 0.1μA. The devices are capable of operating over an input voltage from 1.8V to 20V, and can supply 100mA of output current with a dropout voltage of 300mV. Quiescent current is well controlled, not rising in dropout as it does with many other regulators.

The LT1761 regulators are stable with output capacitors as low as 1μF. Small ceramic capacitors can be used without the series resistance required by other regulators.

Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The device is available in fixed output voltages of 1.2V, 1.5V, 1.8V, 2V, 2.5V, 2.8V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The LT1761 regulators are available in the 5-lead TSOT-23 package.

Applications

  • Cellular Phones
  • Pagers
  • Battery-Powered Systems
  • Frequency Synthesizers
  • Wireless Modems
Part Models 50
1ku List Price Starting From $1.31

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

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DC330A

LT1761ES5-BYP/SD Demo Board | 2 Circuits: Low Output Noise and Low Current Shutdown, 2.3V ≤ VIN ≤ 20V, VOUT = 1.22/1.8/2.0/2.5/2.8/3.0/3.3/5.0V @ 100mA

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DC330A

LT1761ES5-BYP/SD Demo Board | 2 Circuits: Low Output Noise and Low Current Shutdown, 2.3V ≤ VIN ≤ 20V, VOUT = 1.22/1.8/2.0/2.5/2.8/3.0/3.3/5.0V @ 100mA

LT1761ES5-BYP/SD Demo Board | 2 Circuits: Low Output Noise and Low Current Shutdown, 2.3V ≤ VIN ≤ 20V, VOUT = 1.22/1.8/2.0/2.5/2.8/3.0/3.3/5.0V @ 100mA

Product Detail

Demonstration circuit DC330 comprises two low noise micropower voltage regulators using the 100mA output LT1761 in the 5-lead SOT-23 package. The demo board includes two circuits: one using the LT1761-BYP which allows the internal reference to be bypassed to reduce output voltage noise, and the other using the LT1761-SD which has a low current shutdown feature. Both circuits accept a 2.3V to 20V input and have a jumper-selectable 1.22V/1.5V/1.8V/2.5V/2.8V/3.0V/3.3V/5.0V/Adj output.

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DC330B

LT1761 Demo Board | 100mA Low Noise Micropower LDO Regulator

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DC330B

LT1761 Demo Board | 100mA Low Noise Micropower LDO Regulator

LT1761 Demo Board | 100mA Low Noise Micropower LDO Regulator

Product Detail

Demonstration circuit DC330 comprises two low noise micropower voltage regulators using the LT1761 in the 5-lead SOT-23 package. These circuits are primarily used in cellular phones, voltage controlled oscillators, RF power supplies and as local regulators in larger systems. Their ability to tolerate a wide variety of output capacitors makes them ideal in space- and cost-sensitive systems.

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AD-M2KPWR-EBZ

ADALM2000 Power Booster Board

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AD-M2KPWR-EBZ

ADALM2000 Power Booster Board

ADALM2000 Power Booster Board

Features and Benefits

  • ADALM2000 compatible
  • USB Type-C powered
  • Provides two outputs with increased current sourcing capabilities

Product Detail

The AD-M2KPWR-EBZ is an ADALM2000 add-on board which increases the output current capability up to 700mA. This board can be also used as a standalone benchtop power supply with positive and negative outputs.

The AD-M2KPWR-EBZ is a USB Type C powered board capable to increase the output current of ADALM2000’s power supplies. 

Inputs:

  1. USB type C:  4 – 18 V (validated with RPI USB-C power supply - not provided in the kit), 20W (power supply permitting)
  2. External (screw terminal connector): 4.5–18V; 20W (power supply permitting)

 

Switching between the inputs is done with a jumper.

Outputs: (2 control modes)

  1. Two variable power supplies that track M2K user supplies:
    1. 0V to 5V (400mA in USB power mode)
    2. –5V to 0V (400mA in USB power mode)
  2. Two variable power supplies, controlled from a potentiometer
    1. 1.5V to 15V (up to 700mA if powered with 18V)
    2. –15V to –1.5V (up to 700mA if powered with 18V)

 

APPLICATIONS

  • General-purpose electronic systems
  • Educational applications
  • Automated test equipment
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 8

Figure 1. CN0569 Simplified Block Diagram

Infrared Gesture Recognition Module

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CN0569

Infrared Gesture Recognition Module

CN0569

Circuits from the lab

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Infrared Gesture Recognition Module

Features and Benefits

  • Highly Integrated Optical Front End
  • Dual Light Sensors for Intensity and Directionality Measurements
  • Open Source Gesture Detection Algorithm
View Detailed Reference Design external link

Design & Integration Tools

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ZIP

3.07 M

Videos

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Jul 08, 2022

01:01

Infrared Gesture Recognition Module for HMI Applications

Simplified Schematic of the Optical Liquid Measurement Platform

Multiple Parameter Optical Liquid Measurement Platform

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CN0503

Multiple Parameter Optical Liquid Measurement Platform

CN0503

Circuits from the lab

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Multiple Parameter Optical Liquid Measurement Platform

Features and Benefits

View Detailed Reference Design external link

Design & Integration Tools

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ZIP

8.22 M

Videos

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Oct 20, 2021

04:48

Optical Liquid Analysis in a Flash with ADPD4101 & CN0503

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Jul 12, 2023