LT1963A
LT1963A Series
RECOMMENDED FOR NEW DESIGNS1.5A, Low Noise, Fast Transient Response LDO Regulators
- Part Models
- 69
- 1ku List Price
- Starting From $2.98
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Overview
- 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
- 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
Documentation
Data Sheet 1
Technical Articles 3
Brochure 1
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 | ||
| LT1963AEFE#TRPBF | 16-Lead TSSOP w/ EP | ||
| LT1963AEFE-1.5#PBF | 16-Lead TSSOP w/ EP | ||
| LT1963AEFE-1.5#TRPBF | 16-Lead TSSOP w/ EP | ||
| LT1963AEFE-1.8#PBF | 16-Lead TSSOP w/ EP | ||
| LT1963AEFE-1.8#TRPBF | 16-Lead TSSOP w/ EP | ||
| LT1963AEFE-2.5#PBF | 16-Lead TSSOP w/ EP | ||
| LT1963AEFE-2.5#TRPBF | 16-Lead TSSOP w/ EP | ||
| LT1963AEFE-3.3#PBF | 16-Lead TSSOP w/ EP | ||
| LT1963AEFE-3.3#TRPBF | 16-Lead TSSOP w/ EP | ||
| LT1963AEQ#PBF | 5-Lead DD Pak | ||
| LT1963AEQ#TRPBF | 5-Lead DD Pak | ||
| LT1963AEQ-1.5#PBF | 5-Lead DD Pak | ||
| LT1963AEQ-1.5#TRPBF | 5-Lead DD Pak | ||
| LT1963AEQ-1.8#PBF | 5-Lead DD Pak | ||
| LT1963AEQ-1.8#TRPBF | 5-Lead DD Pak | ||
| LT1963AEQ-2.5#PBF | 5-Lead DD Pak | ||
| LT1963AEQ-2.5#TRPBF | 5-Lead DD Pak | ||
| LT1963AEQ-3.3#PBF | 5-Lead DD Pak | ||
| LT1963AEQ-3.3#TRPBF | 5-Lead DD Pak | ||
| LT1963AES8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AES8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AES8-1.5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AES8-1.5#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AES8-1.8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AES8-1.8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AES8-2.5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AES8-2.5#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AES8-3.3#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AES8-3.3#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AEST-1.5#PBF | 3-Lead SOT-223 | ||
| LT1963AEST-1.5#TRPBF | 3-Lead SOT-223 | ||
| LT1963AEST-1.5#WPBF | 3-Lead SOT-223 | ||
| LT1963AEST-1.5#WTRPBF | 3-Lead SOT-223 | ||
| LT1963AEST-1.8#PBF | 3-Lead SOT-223 | ||
| LT1963AEST-1.8#TRPBF | 3-Lead SOT-223 | ||
| LT1963AEST-1.8#WPBF | 3-Lead SOT-223 | ||
| LT1963AEST-1.8#WTRPBF | 3-Lead SOT-223 | ||
| LT1963AEST-2.5#PBF | 3-Lead SOT-223 | ||
| LT1963AEST-2.5#TRPBF | 3-Lead SOT-223 | ||
| LT1963AEST-2.5#WPBF | 3-Lead SOT-223 | ||
| LT1963AEST-2.5#WTRPBF | 3-Lead SOT-223 | ||
| LT1963AEST-3.3#PBF | 3-Lead SOT-223 | ||
| LT1963AEST-3.3#TRPBF | 3-Lead SOT-223 | ||
| LT1963AEST-3.3#WPBF | 3-Lead SOT-223 | ||
| LT1963AEST-3.3#WTRPBF | 3-Lead SOT-223 | ||
| LT1963AET#06PBF | 5-Lead TO-220 (Flow 06) | ||
| LT1963AET#PBF | 5-Lead TO-220 | ||
| LT1963AET-1.5#06PBF | 5-Lead TO-220 (Flow 06) | ||
| LT1963AET-1.5#PBF | 5-Lead TO-220 | ||
| LT1963AET-1.8#06PBF | 5-Lead TO-220 (Flow 06) | ||
| LT1963AET-1.8#30PBF | 5-Lead TO-220 (Flow 30) | ||
| LT1963AET-1.8#PBF | 5-Lead TO-220 | ||
| LT1963AET-2.5#06PBF | 5-Lead TO-220 (Flow 06) | ||
| LT1963AET-2.5#30PBF | 5-Lead TO-220 (Flow 30) | ||
| LT1963AET-2.5#PBF | 5-Lead TO-220 | ||
| LT1963AET-3.3#06PBF | 5-Lead TO-220 (Flow 06) | ||
| LT1963AET-3.3#30PBF | 5-Lead TO-220 (Flow 30) | ||
| LT1963AET-3.3#PBF | 5-Lead TO-220 | ||
| LT1963AIFE#PBF | 16-Lead TSSOP w/ EP | ||
| LT1963AIFE#TRPBF | 16-Lead TSSOP w/ EP | ||
| LT1963AIQ#PBF | 5-Lead DD Pak | ||
| LT1963AIQ#TRPBF | 5-Lead DD Pak | ||
| LT1963AIS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AIS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1963AIT#PBF | 5-Lead TO-220 | ||
| LT1963AMPQ#PBF | 5-Lead DD Pak | ||
| LT1963AMPQ#TRPBF | 5-Lead DD Pak | ||
| LT1963AMPS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 18, 2026 - 26_0072 Epoxy Change for Select TSSOP Products |
||
| 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 | |
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
||
| 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 |
||
| 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 |
||
| 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) |
||
| LT1963AES8#PBF | PRODUCTION | |
| LT1963AES8#TRPBF | PRODUCTION | |
|
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| 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) |
||
| 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) |
||
| 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.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| Temperature Sensors 1 | ||
| LTC2991 | RECOMMENDED FOR NEW DESIGNS | Octal I2C Voltage, Current, and Temperature Monitor |
Tools & Simulations
LTspice 1
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
