LT1964

RECOMMENDED FOR NEW DESIGNS

200mA, Low Noise, Low Dropout Negative Micropower Regulator

Data Sheet Product Selection Table
Part Models
16
1ku List Price
Starting From $1.72
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Part Details

  • 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
LT1964
200mA, Low Noise, Low Dropout Negative Micropower Regulator
–5V Low Noise Regulator 10Hz to 100kHz Output Noise Product Package 3 Product Package 4 Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Design Note 1

Technical Articles 1

Data Sheet

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

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Hardware Ecosystem

Parts Product Life Cycle Description
Negative Linear Regulators (LDO) 1
LT3090
RECOMMENDED FOR NEW DESIGNS –36V, 600mA Negative Linear Regulator with Programmable Current Limit
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT1964-5
  • LT1964-BYP
  • LT1964-SD
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
SCP-LT1964-EVALZ

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

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Product Details

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.

eval board
schematic 4
schematic 5
schematic 6
schematic 7
schematic 8
DC437A

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

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Product Details

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.
SCP-LT1964-EVALZ
LT1964 Signal Chain Evaluation Board | 200mA Low Noise Negative LDO
LT1964 Signal Chain Evaluation Board LT1964 Signal Chain Evaluation Board - Top View LT1964 Signal Chain Evaluation Board - Bottom View
DC437A
LT1964ES56 Demo Board | Negative Low Noise LDO Regulator, -2.3V ≤ VIN ≤ -20V, VOUT = -1.22V/-5V @ 200mA
DC437A Demo Board DC437A Demo Board DC437A Demo Board DC437A Demo Board DC437A - Schematic

Latest Discussions

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LT1964_difference between the LT1964ES5-5#PBF and LT1964IS5-5#PBF
5 Years Ago
RE: Transistor / Gates in LT1964
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