LT1963A Series

RECOMMENDED FOR NEW DESIGNS

1.5A, Low Noise, Fast Transient Response LDO Regulators

Data Sheet (Rev. G) Product Selection Table

Part Models: 69
1ku List Price: Starting From $2.59

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Part Details

Optimized for Fast Transient Response
Output Current: 1.5A
Dropout Voltage: 340mV
Low Noise: 40μV_RMS (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
Stable with Ceramic Capacitors
Reverse Battery Protection
No Reverse Current
Thermal Limiting
5-Lead TO-220, DD, 3-Lead SOT-223 and 8-Lead SO Packages
AEC-Q100 Qualified for Automotive Applications

The LT1963A 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 LT1963A 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 LT1963A regulators are stable with output capacitors as low as 10μF. 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 LT1963A regulators are available in 5-lead TO-220, DD, 3‑lead SOT-223, 8-lead SO and 16-lead TSSOP packages.


	Features
LT1963	-
LT1963A	Stable With Ceramic Output Capacitors

APPLICATIONS

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

Part Models: 69
1ku List Price: Starting From $2.59

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT1963AEFE#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEFE#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEFE-1.5#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEFE-1.5#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEFE-1.8#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEFE-1.8#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEFE-2.5#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEFE-2.5#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEFE-3.3#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEFE-3.3#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEQ#PBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEQ#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEQ-1.5#PBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEQ-1.5#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEQ-1.8#PBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEQ-1.8#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEQ-2.5#PBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEQ-2.5#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEQ-3.3#PBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEQ-3.3#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AES8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AES8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AES8-1.5#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AES8-1.5#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AES8-1.8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AES8-1.8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AES8-2.5#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AES8-2.5#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AES8-3.3#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AES8-3.3#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-1.5#PBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-1.5#TRPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-1.5#WPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-1.5#WTRPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-1.8#PBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-1.8#TRPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-1.8#WPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-1.8#WTRPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-2.5#PBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-2.5#TRPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-2.5#WPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-2.5#WTRPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-3.3#PBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-3.3#TRPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-3.3#WPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AEST-3.3#WTRPBF	3-Lead SOT-223	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET#PBF	5-Lead TO-220	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET-1.5#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET-1.5#PBF	5-Lead TO-220	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET-1.8#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET-1.8#30PBF	5-Lead TO-220 (Flow 30)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET-1.8#PBF	5-Lead TO-220	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET-2.5#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET-2.5#30PBF	5-Lead TO-220 (Flow 30)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET-2.5#PBF	5-Lead TO-220	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET-3.3#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET-3.3#30PBF	5-Lead TO-220 (Flow 30)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AET-3.3#PBF	5-Lead TO-220	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AIFE#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AIFE#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AIQ#PBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AIQ#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AIS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AIS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AIT#PBF	5-Lead TO-220	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AMPQ#PBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AMPQ#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1963AMPS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL
		PCN22_0068_Form Material_Report Delta Qualification Matrix
LT1963AEFE#PBF	PRODUCTION
LT1963AEFE#TRPBF	PRODUCTION
LT1963AEFE-1.5#PBF	PRODUCTION
LT1963AEFE-1.5#TRPBF	PRODUCTION
LT1963AEFE-1.8#PBF	PRODUCTION
LT1963AEFE-1.8#TRPBF	PRODUCTION
LT1963AEFE-2.5#PBF	PRODUCTION
LT1963AEFE-2.5#TRPBF	PRODUCTION
LT1963AEFE-3.3#PBF	PRODUCTION
LT1963AEFE-3.3#TRPBF	PRODUCTION
LT1963AIFE#PBF	PRODUCTION
LT1963AIFE#TRPBF	PRODUCTION
Aug 10, 2022 - 22_0175 Laser Top Mark Conversion for DDPAK & TO220 Packages Assembled in ADPG. Country of Origin Code [MY] To Be Incorporated On Top Mark
		PCN22_0175_Form Material_Report Delta Qualification Matrix
LT1963AEQ#PBF	PRODUCTION
LT1963AEQ#TRPBF	PRODUCTION
LT1963AEQ-1.5#PBF	PRODUCTION
LT1963AEQ-1.5#TRPBF	PRODUCTION
LT1963AEQ-1.8#PBF	PRODUCTION
LT1963AEQ-1.8#TRPBF	PRODUCTION
LT1963AEQ-2.5#PBF	PRODUCTION
LT1963AEQ-2.5#TRPBF	PRODUCTION
LT1963AEQ-3.3#PBF	PRODUCTION
LT1963AEQ-3.3#TRPBF	PRODUCTION
LT1963AET#06PBF	PRODUCTION
LT1963AET#PBF	PRODUCTION
LT1963AET-1.5#06PBF	PRODUCTION
LT1963AET-1.5#PBF	PRODUCTION
LT1963AET-1.8#06PBF	PRODUCTION
LT1963AET-1.8#30PBF	PRODUCTION
LT1963AET-1.8#PBF	PRODUCTION
LT1963AET-2.5#06PBF	PRODUCTION
LT1963AET-2.5#30PBF	PRODUCTION
LT1963AET-2.5#PBF	PRODUCTION
LT1963AET-3.3#06PBF	PRODUCTION
LT1963AET-3.3#30PBF	PRODUCTION
LT1963AET-3.3#PBF	PRODUCTION
LT1963AIQ#PBF	PRODUCTION
LT1963AIQ#TRPBF	PRODUCTION
LT1963AIT#PBF	PRODUCTION
LT1963AMPQ#PBF	PRODUCTION
LT1963AMPQ#TRPBF	PRODUCTION
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package
		PCN24_0246_Form Material_Report Marking Comparison Delta Qualification Matrix
LT1963AES8#PBF	PRODUCTION
LT1963AES8#TRPBF	PRODUCTION
LT1963AES8-1.5#PBF	PRODUCTION
LT1963AES8-1.5#TRPBF	PRODUCTION
LT1963AES8-1.8#PBF	PRODUCTION
LT1963AES8-1.8#TRPBF	PRODUCTION
LT1963AES8-2.5#PBF	PRODUCTION
LT1963AES8-2.5#TRPBF	PRODUCTION
LT1963AES8-3.3#PBF	PRODUCTION
LT1963AES8-3.3#TRPBF	PRODUCTION
LT1963AIS8#PBF	PRODUCTION
LT1963AIS8#TRPBF	PRODUCTION
LT1963AMPS8#PBF	PRODUCTION
Nov 14, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)
		PCN22_0254_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT1963AES8#PBF	PRODUCTION
LT1963AES8#TRPBF	PRODUCTION
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM
		PCN21_0026_Form Material_Report Delta Qualification Matrix
LT1963AES8#PBF	PRODUCTION
LT1963AES8#TRPBF	PRODUCTION
LT1963AES8-1.5#PBF	PRODUCTION
LT1963AES8-1.5#TRPBF	PRODUCTION
LT1963AES8-1.8#PBF	PRODUCTION
LT1963AES8-1.8#TRPBF	PRODUCTION
LT1963AES8-2.5#PBF	PRODUCTION
LT1963AES8-2.5#TRPBF	PRODUCTION
LT1963AES8-3.3#PBF	PRODUCTION
LT1963AES8-3.3#TRPBF	PRODUCTION
LT1963AIS8#PBF	PRODUCTION
LT1963AIS8#TRPBF	PRODUCTION
LT1963AMPS8#PBF	PRODUCTION
Oct 12, 2022 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)
		PCN22_0255_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT1963AES8-1.5#PBF	PRODUCTION
LT1963AES8-1.5#TRPBF	PRODUCTION
LT1963AES8-1.8#PBF	PRODUCTION
LT1963AES8-1.8#TRPBF	PRODUCTION
LT1963AES8-3.3#PBF	PRODUCTION
LT1963AES8-3.3#TRPBF	PRODUCTION
LT1963AMPS8#PBF	PRODUCTION
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)
		PCN22_0255_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT1963AES8-2.5#PBF	PRODUCTION
LT1963AES8-2.5#TRPBF	PRODUCTION
LT1963AIS8#PBF	PRODUCTION
LT1963AIS8#TRPBF	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
Digital Temperature Sensors 1
LTC2991	RECOMMENDED FOR NEW DESIGNS	Octal I²C Voltage, Current, and Temperature Monitor

Parts	Product Life Cycle	Description
LT1764A	RECOMMENDED FOR NEW DESIGNS	3A, Fast Transient Response, Low Noise, LDO Regulators
LT3081	RECOMMENDED FOR NEW DESIGNS	1.5A Single Resistor Rugged Linear Regulator with Monitors

Tools & Simulations

LTspice 1

LT1963A Demo Circuit - Low Noise, Fast Transient Response LDO Regulator (10V to 5V@1.5A)

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

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.

Reference Designs

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