Analog Devices Inc. LT1962 300mA Low Noise Micropower LDO Regulators

Analog Devices Inc. LT1962 Low Noise Micropower LDO (Low Dropout) Regulators supply 300mA of output current with a dropout voltage of 270mV. Designed for use in battery-powered systems, the low 30µA quiescent current makes the LT1962 Regulators an ideal choice for use in smartphones and other noise-sensitive applications. Quiescent current is well controlled and does not rise in dropout as it does with many other regulators.

LT1962 Regulators offer extremely 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 LT1962 Regulators are stable with output capacitors as low as 3.3µF. 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 1.5V, 1.8V, 2.5V, 3.0V, 3.3V, and 5.0V, and as an adjustable device with a 1.22V reference voltage.

The LT1962 regulators are offered in the 8-lead, RoHS-compliant Micro Small Outline Package (MSOP).


  • Low Noise: 20µVRMS (10Hz to 100kHz)
  • Low Quiescent Current: 30µA
  • Wide Input Voltage Range: 1.8V to 20.0V
  • Output Current: 150mA
  • Very Low Shutdown Current: < 1µA
  • Low Dropout Voltage: 270mV
  • No Protection Diodes Needed
  • Fixed Output Voltages: 2.5V, 3.0V, 3.3V, 5.0V
  • Adjustable Output from 1.22V to 20.0V
  • 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
  • RoHS Compliant


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

Typical Application Circuit

Application Circuit Diagram - Analog Devices Inc. LT1962 300mA Low Noise Micropower LDO Regulators

Pin Designations & Package Outline

Mechanical Drawing - Analog Devices Inc. LT1962 300mA Low Noise Micropower LDO Regulators
Published: 2019-06-04 | Updated: 2022-03-11