LT1964
Info : RECOMMENDED FOR NEW DESIGNS
searchIcon
cartIcon

LT1964

200mA, Low Noise, Low Dropout Negative Micropower Regulator

Show More showmore-icon

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 16
1ku List Price Starting From $1.72
Features
  • Low Noise: 30µVRMS (10Hz to 100kHz)
  • Low Quiescent Current: 30µA
  • Low Dropout Voltage: 340mV
  • Output Current: 200mA
  • Fixed Output Voltage: –5V
  • Adjustable Output from –1.22V to –20V
  • Positive or Negative Shutdown Logic
  • 3µA Quiescent Current in Shutdown
  • Stable with 1µF Output Capacitor
  • Stable with Aluminum, Tantalum, or Ceramic Capacitors
  • Thermal Limiting
  • Low Profile (1mm) ThinSOT and (0.75mm) 8-Pin 3mm × 3mm DFN Packages
Additional Details
show more Icon

The LT1964 is a micropower low noise, low dropout negative regulator. The device is capable of supplying 200mA of output current with a dropout voltage of 340mV. Low quiescent current (30µA operating and 3µA shutdown) makes the LT1964 an excellent choice for battery-powered applications. Quiescent current is well controlled in dropout.

Other features of the LT1964 include low output noise. With the addition of an external 0.01µF bypass capacitor, output noise is reduced to 30µVRMS over a 10Hz to 100kHz bandwidth. The LT1964 is capable of operating with small capacitors and is stable with output capacitors as low as 1µF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse output protection, current limiting, and thermal limiting. The device is available with a fixed output voltage of –5V and as an adjustable device with a –1.22V reference voltage. The LT1964 regulators are available in a low profile (1mm) ThinSOT and the low profile (0.75mm) 8-pin (3mm × 3mm) DFN packages.

Applications

  • Battery-Powered Instruments
  • Low Noise Regulator for Noise-Sensitive Instrumentation
  • Negative Complement to LT1761 Family of Positive LDOs
Part Models 16
1ku List Price Starting From $1.72

close icon
Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT1964EDD#PBF
  • HTML
  • HTML
LT1964EDD#TRPBF
  • HTML
  • HTML
LT1964ES5-5#TRMPBF
  • HTML
  • HTML
LT1964ES5-5#TRPBF
  • HTML
  • HTML
LT1964ES5-BYP#TRMPBF
  • HTML
  • HTML
LT1964ES5-BYP#TRPBF
  • HTML
  • HTML
LT1964ES5-SD#TRMPBF
  • HTML
  • HTML
LT1964ES5-SD#TRPBF
  • HTML
  • HTML
LT1964IDD#PBF
  • HTML
  • HTML
LT1964IDD#TRPBF
  • HTML
  • HTML
LT1964IS5-5#TRMPBF
  • HTML
  • HTML
LT1964IS5-5#TRPBF
  • HTML
  • HTML
LT1964IS5-BYP#TRMPBF
  • HTML
  • HTML
LT1964IS5-BYP#TRPBF
  • HTML
  • HTML
LT1964IS5-SD#TRMPBF
  • HTML
  • HTML
LT1964IS5-SD#TRPBF
  • HTML
  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

reference details image

DC437A

LT1964ES56 Demo Board | Negative Low Noise LDO Regulator, -2.3V ≤ VIN ≤ -20V, VOUT = -1.22V/-5V @ 200mA

zoom

DC437A

LT1964ES56 Demo Board | Negative Low Noise LDO Regulator, -2.3V ≤ VIN ≤ -20V, VOUT = -1.22V/-5V @ 200mA

LT1964ES56 Demo Board | Negative Low Noise LDO Regulator, -2.3V ≤ VIN ≤ -20V, VOUT = -1.22V/-5V @ 200mA

Product Detail

Demonstration circuit DC437 is a low noise negative micropower voltage regulator using the LT1964 low dropout linear regulator, which comes in a tiny 5-Pin SOT-23 package. The DC437 has an input voltage range from –2.3V to –20V, and is capable of delivering up to 200mA of output current. There are two circuits on this demo board: one uses the LT1964ES5-BYP which allows the internal reference to be bypassed to reduced output voltage noise, and the other uses the LT1964ES5-SD which has the shutdown feature. The output voltage is jumper-selectable and can be set to -1.22V, -5V or a user-determined value.

reference details image

SCP-LT1964-EVALZ

LT1964 Signal Chain Evaluation Board | 200mA Low Noise Negative LDO

zoom

SCP-LT1964-EVALZ

LT1964 Signal Chain Evaluation Board | 200mA Low Noise Negative LDO

LT1964 Signal Chain Evaluation Board | 200mA Low Noise Negative LDO

Product Detail

Demonstration circuit SCP-LT1964-EVALZ is a –20V, 200mA Low Dropout (LDO) regulator designed to allow low noise operation in noise sensitive circuits. It is easily configured for a wide output range and can provide extremely quiet operation with its high PSRR.

Like all boards in the Signal Chain Power series, this board is designed to be easily plugged into other SCP boards to form a complete signal chain power system, enabling fast evaluation of low power signal chains. To evaluate this board, some universal SCP hardware is required, namely:

  • SCP-INPUT-EVALZ
  • SCP-OUTPUT-EVALZ
  • SCP-1X5BKOUT-EVALZ
  • SCP-THRUBRD-EVALZ
  • SCP-FILTER-EVALZ
  • SCP-1X2BKOUT-EVALZ
  • SCP-5X1-EVALZ

 

To properly evaluate SCP series demo boards, you will need the SCP Configurator companion software. SCP Configurator can help you choose the right board and topology for your design.

Note that the Demo Manual does not cover details important to the operation and configuration regarding the LT1964. Please refer to the LT1964 data sheet for a complete description of the part.

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.

Recently Viewed