LT1762 - 150mA, Low Noise, LDO Micropower Regulators

Features

  • Low Noise: 20µVRMS (10Hz to 100kHz)
  • Low Quiescent Current: 25µA
  • Wide Input Voltage Range: 1.8V to 20V
  • Output Current: 150mA
  • Very Low Shutdown Current: < 1µA
  • Low Dropout Voltage: 270mV
  • No Protection Diodes Needed
  • Fixed Output Voltages: 2.5V, 3V, 3.3V, 5V
  • Adjustable Output from 1.22V to 20V
  • Stable with 2.2µF Output Capacitor
  • Stable with Aluminum, Tantalum or Ceramic Capacitors
  • Reverse Battery Protection
  • No Reverse Current
  • Overcurrent and Overtemperature Protected
  • 8-Lead MSOP Package

Typical Application

LT1762 Typical Application
LT1762 Typical Application

Description

The LT1762 series are micropower, low noise, low dropout regulators. The devices are capable of supplying 150mA of output current with a dropout voltage of 300mV. Designed for use in battery-powered systems, the low 25µA quiescent current makes them an ideal choice. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators.

A key feature of the LT1762 regulators is low output noise. With the addition of an external 0.01µF bypass capacitor, output noise drops to 20µVRMS over a 10Hz to 100kHz bandwidth. The LT1762 regulators are stable with output capacitors as low as 2.2µF. 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 parts come in fixed output voltages of 2.5V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The LT1762 regulators are available in the 8-lead MSOP package.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

MS-8

LT1762 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT1762EMS8 MSOP 8 E $1.30 $1.10 View
LT1762EMS8#PBF MSOP 8 E $1.30 $1.10 View
LT1762EMS8#TR MSOP 8 E $1.16 View
LT1762EMS8#TRPBF MSOP 8 E $1.16 View
LT1762EMS8-2.5 MSOP 8 E $1.30 $1.10 View
LT1762EMS8-2.5#PBF MSOP 8 E $1.30 $1.10 View
LT1762EMS8-2.5#TR MSOP 8 E $1.16 View
LT1762EMS8-2.5#TRPBF MSOP 8 E $1.16 View
LT1762EMS8-3 MSOP 8 E $1.30 $1.10 View
LT1762EMS8-3#PBF MSOP 8 E $1.30 $1.10 View
LT1762EMS8-3#TR MSOP 8 E $1.16 View
LT1762EMS8-3#TRPBF MSOP 8 E $1.16 View
LT1762EMS8-3.3 MSOP 8 E $1.30 $1.10 View
LT1762EMS8-3.3#PBF MSOP 8 E $1.30 $1.10 View
LT1762EMS8-3.3#TR MSOP 8 E $1.16 View
LT1762EMS8-3.3#TRPBF MSOP 8 E $1.16 View
LT1762EMS8-5 MSOP 8 E $1.30 $1.10 View
LT1762EMS8-5#PBF MSOP 8 E $1.30 $1.10 View
LT1762EMS8-5#TR MSOP 8 E $1.16 View
LT1762EMS8-5#TRPBF MSOP 8 E $1.16 View
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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 Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC279A-B LTC1736, LTC1772, LTC1762 | Low Cost VRM (Intel), 7.5 to 24Vin, 1.3V to 1.6Vout @ 14A, 1.5Vout @ 0.12 to 2.5A, 2.5Vout @ 0.15A. Contact Factory
DC339A-A LT1762EMS8 Demo Board | Micropower Low Noise LDO Regulator, 2.3V ≤ VIN ≤ 20V, Vout = 1.22V/2.5V/3V/3.3V/5V/Adj @ 150mA. $75.00
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Click here to view our complete list of demo boards

Applications

  • Cellular Phones
  • Battery-Powered Systems
  • Frequency Synthesizers
  • Noise-Sensitive Instrumentation Systems

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Design Tools

LTspiceIV

LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice IV

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice IV
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice IV does not automatically open after clicking the link above, 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

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice IV:
LT1762
LT1762-1.5
LT1762-1.8
LT1762-2.5
LT1762-3
LT1762-3.3
LT1762-5

Technical Support