Power Management LDO Linear Regulators Positive Linear Regulators (LDO)

For New Designs

LT1963A Series - 1.5A, Low Noise, Fast Transient Response LDO Regulators

LTC2991 - Octal I2C Voltage, Current, and Temperature Monitor

LT1963 - 1.5A, Low Noise, Fast Transient Response LDO Regulators

Features

  • Optimized for Fast Transient Response
  • Output Current: 1.5A
  • Dropout Voltage: 340mV
  • Low Noise: 40μVRMS (10Hz to 100kHz)
  • 1mA Quiescent Current
  • No Protection Diodes Needed
  • Controlled Quiescent Current in Dropout
  • Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V
  • Adjustable Output from 1.21V to 20V
  • <1μA Quiescent Current in Shutdown
  • Stable with 10μF Output Capacitor
  • Reverse Battery Protection
  • No Reverse Current
  • Thermal Limiting
  • 5-Lead TO-220, DD, 3-Lead SOT-223, 8-Lead SO and 16-Lead TSSOP Packages

Typical Application

LT1963 Typical Application
LT1963 Typical Application

Description

The LT1963 series are low dropout regulators optimized for fast transient response. The devices are capable of supplying 1.5A of output current with a dropout voltage of 340mV. Operating quiescent current is 1mA, dropping to <1μA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. In addition to fast transient response, the LT1963 regulators have very low output noise which makes them ideal for sensitive RF supply applications.

Output voltage range is from 1.21V to 20V. The LT1963 regulators are stable with output capacitors as low as 10?F. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The devices are available in fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an adjustable device with a 1.21V reference voltage. The LT1963 regulators are available in 5-lead TO-220, DD, 3-lead SOT-223, 8-lead SO, and Exposed Pad 16-lead TSSOP packages.

  Features
LT1963 -
LT1963A Stable With Ceramic Output Capacitors

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
Drawing		 RoHS
LT1963EFE-1.5#PBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT1963EFE-1.5#TRPBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT1963EFE-1.8#PBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT1963EFE-1.8#TRPBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT1963EFE-2.5#PBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT1963EFE-2.5#TRPBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT1963EFE-3.3#PBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT1963EFE-3.3#TRPBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT1963EFE#PBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT1963EFE#TRPBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT1963EQ-1.5#PBF DDPAK-5 Q E 05-08-1461 Yes
LT1963EQ-1.5#TRPBF DDPAK-5 Q E 05-08-1461 Yes
LT1963EQ-1.8#PBF DDPAK-5 Q E 05-08-1461 Yes
LT1963EQ-1.8#TRPBF DDPAK-5 Q E 05-08-1461 Yes
LT1963EQ-2.5#PBF DDPAK-5 Q E 05-08-1461 Yes
LT1963EQ-2.5#TRPBF DDPAK-5 Q E 05-08-1461 Yes
LT1963EQ-3.3#PBF DDPAK-5 Q E 05-08-1461 Yes
LT1963EQ-3.3#TRPBF DDPAK-5 Q E 05-08-1461 Yes
LT1963EQ#PBF DDPAK-5 Q E 05-08-1461 Yes
LT1963EQ#TRPBF DDPAK-5 Q E 05-08-1461 Yes
LT1963ES8-1.5#PBF SO-8 S8 E 05-08-1610 (S8) Yes
LT1963ES8-1.5#TRPBF SO-8 S8 E 05-08-1610 (S8) Yes
LT1963ES8-1.8#PBF SO-8 S8 E 05-08-1610 (S8) Yes
LT1963ES8-1.8#TRPBF SO-8 S8 E 05-08-1610 (S8) Yes
LT1963ES8-2.5#PBF SO-8 S8 E 05-08-1610 (S8) Yes
LT1963ES8-2.5#TRPBF SO-8 S8 E 05-08-1610 (S8) Yes
LT1963ES8-3.3#PBF SO-8 S8 E 05-08-1610 (S8) Yes
LT1963ES8-3.3#TRPBF SO-8 S8 E 05-08-1610 (S8) Yes
LT1963ES8#PBF SO-8 S8 E 05-08-1610 (S8) Yes
LT1963ES8#TRPBF SO-8 S8 E 05-08-1610 (S8) Yes
LT1963EST-1.5#PBF SOT-223 ST E 05-08-1630 Yes
LT1963EST-1.5#TRPBF SOT-223 ST E 05-08-1630 Yes
LT1963EST-1.8#PBF SOT-223 ST E 05-08-1630 Yes
LT1963EST-1.8#TRPBF SOT-223 ST E 05-08-1630 Yes
LT1963EST-2.5#PBF SOT-223 ST E 05-08-1630 Yes
LT1963EST-2.5#TRPBF SOT-223 ST E 05-08-1630 Yes
LT1963EST-3.3#PBF SOT-223 ST E 05-08-1630 Yes
LT1963EST-3.3#TRPBF SOT-223 ST E 05-08-1630 Yes
LT1963ET-1.5#30PBF TO-220 T E 05-08-1421 (Standard) Yes
LT1963ET-1.5#PBF TO-220 T E 05-08-1421 (Standard) Yes
LT1963ET-1.8#30PBF TO-220 T E 05-08-1421 (Standard) Yes
LT1963ET-1.8#PBF TO-220 T E 05-08-1421 (Standard) Yes
LT1963ET-2.5#PBF TO-220 T E 05-08-1421 (Standard) Yes
LT1963ET-3.3#06PBF TO-220 T E 05-08-1421 (Flow 06) Yes
LT1963ET-3.3#30PBF TO-220 T E 05-08-1421 (Standard) Yes
LT1963ET-3.3#PBF TO-220 T E 05-08-1421 (Standard) Yes
LT1963ET#06PBF TO-220 T E 05-08-1421 (Flow 06) Yes
LT1963ET#30PBF TO-220 T E 05-08-1421 (Standard) Yes
LT1963ET#31PBF TO-220 T E 05-08-1421 (Standard) Yes
LT1963ET#PBF TO-220 T E 05-08-1421 (Standard) Yes


LT1963 Package Drawing
LT1963 Package Drawing
LT1963 Package Drawing
LT1963 Package Drawing
LT1963 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LT1963EFE-1.5#PBF TSSOP-16 E $3.57 $2.50 Yes
LT1963EFE-1.5#TRPBF TSSOP-16 E $2.62 Yes
LT1963EFE-1.8#PBF TSSOP-16 E $3.57 $2.50 Yes
LT1963EFE-1.8#TRPBF TSSOP-16 E $2.62 Yes
LT1963EFE-2.5#PBF TSSOP-16 E $3.57 $2.50 Yes
LT1963EFE-2.5#TRPBF TSSOP-16 E $2.62 Yes
LT1963EFE-3.3#PBF TSSOP-16 E $3.57 $2.50 Yes
LT1963EFE-3.3#TRPBF TSSOP-16 E $2.62 Yes
LT1963EFE#PBF TSSOP-16 E $3.57 $2.50 Yes
LT1963EFE#TRPBF TSSOP-16 E $2.62 Yes
LT1963EQ-1.5#PBF DDPAK-5 E $3.57 $2.50 Yes
LT1963EQ-1.5#TRPBF DDPAK-5 E $2.62 Yes
LT1963EQ-1.8#PBF DDPAK-5 E $3.57 $2.50 Yes
LT1963EQ-1.8#TRPBF DDPAK-5 E $2.62 Yes
LT1963EQ-2.5#PBF DDPAK-5 E $3.57 $2.50 Yes
LT1963EQ-2.5#TRPBF DDPAK-5 E $2.62 Yes
LT1963EQ-3.3#PBF DDPAK-5 E $3.57 $2.50 Yes
LT1963EQ-3.3#TRPBF DDPAK-5 E $2.62 Yes
LT1963EQ#PBF DDPAK-5 E $3.57 $2.50 Yes
LT1963EQ#TRPBF DDPAK-5 E $2.62 Yes
LT1963ES8-1.5#PBF SO-8 E $2.60 $2.15 Yes
LT1963ES8-1.5#TRPBF SO-8 E $2.20 Yes
LT1963ES8-1.8#PBF SO-8 E $2.60 $2.15 Yes
LT1963ES8-1.8#TRPBF SO-8 E $2.20 Yes
LT1963ES8-2.5#PBF SO-8 E $2.60 $2.15 Yes
LT1963ES8-2.5#TRPBF SO-8 E $2.20 Yes
LT1963ES8-3.3#PBF SO-8 E $2.60 $2.15 Yes
LT1963ES8-3.3#TRPBF SO-8 E $2.20 Yes
LT1963ES8#PBF SO-8 E $2.60 $2.15 Yes
LT1963ES8#TRPBF SO-8 E $2.20 Yes
LT1963EST-1.5#PBF SOT-223 E $2.60 $2.15 Yes
LT1963EST-1.5#TRPBF SOT-223 E $2.20 Yes
LT1963EST-1.8#PBF SOT-223 E $2.71 $2.15 Yes
LT1963EST-1.8#TRPBF SOT-223 E $2.20 Yes
LT1963EST-2.5#PBF SOT-223 E $2.71 $2.15 Yes
LT1963EST-2.5#TRPBF SOT-223 E $2.20 Yes
LT1963EST-3.3#PBF SOT-223 E $2.71 $2.15 Yes
LT1963EST-3.3#TRPBF SOT-223 E $2.20 Yes
LT1963ET-1.5#30PBF TO-220 E $3.64 $2.95 Yes
LT1963ET-1.5#PBF TO-220 E $3.14 $2.50 Yes
LT1963ET-1.8#30PBF TO-220 E $3.64 $2.95 Yes
LT1963ET-1.8#PBF TO-220 E $3.14 $2.50 Yes
LT1963ET-2.5#PBF TO-220 E $3.14 $2.50 Yes
LT1963ET-3.3#06PBF TO-220 E $3.14 $2.50 Yes
LT1963ET-3.3#30PBF TO-220 E $3.64 $2.95 Yes
LT1963ET-3.3#PBF TO-220 E $3.14 $2.50 Yes
LT1963ET#06PBF TO-220 E $3.14 $2.50 Yes
LT1963ET#30PBF TO-220 E $3.64 $2.95 Yes
LT1963ET#31PBF TO-220 E $3.64 $2.95 Yes
LT1963ET#PBF TO-220 E $3.14 $2.50 Yes
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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
DC367A LT1963ES8 Demo Board | Low Noise LDO Regulator, 2.5V ≤ VIN ≤ 20V, Vout = 1.21V/1.5V/1.8V/2.5V/3.3V @ 1.5A $75.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • 3.3V to 2.5V Logic Power Supplies
  • Post Regulator for Switching Supplies

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Design Tools

LTspice

LTspice® software 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

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
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice 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:
LT1963
LT1963-1.5
LT1963-1.8
LT1963-2.5
LT1963-3.3
LT1963A
LT1963A-1.5
LT1963A-1.8
LT1963A-2.5
LT1963A-3.3

Technical Support