LT1965
LT1965
RECOMMENDED FOR NEW DESIGNS1.1A, Low Noise, Low Dropout Linear Regulator
- Part Models
- 74
- 1ku List Price
- Starting From $2.89
Viewing:
Overview
- Output Current: 1.1A
- Dropout Voltage: 310mV
- Low Noise: 40μVRMS (10Hz to 100kHz)
- 500μA Quiescent Current (Adjustable Version)
- Wide Input Voltage Range: 1.8V to 20V
- No Protection Diodes Needed
- Controlled Quiescent Current in Dropout
- Adjustable Output from 1.20V to 19.5V
- Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V
- < 1μA Quiescent Current in Shutdown
- Stable with 10μF Output Capacitor
- Stable with Ceramic or Tantalum Capacitors
- Reverse-Battery Protection
- No Reverse Current
- Current Limit with Foldback Protection
- Thermal Limiting
- 5-Lead TO-220, DD-Pak, Thermally Enhanced 8-Lead MSOP and 8-Lead 3mm × 3mm DFN Packages
The LT1965 series are low noise, low dropout linear regulators. The devices supply 1.1A of output current with a 310mV typical dropout voltage. Operating quiescent current is 500μA for the adjustable version, reducing to <1μA in shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. The LT1965 regulators have very low output noise which makes them ideal for sensitive RF and DSP supply applications.
Output voltage ranges from 1.20V to 19.5V. The LT1965 regulators are stable with output capacitors as low as 10μF. Internal protection circuitry includes reverse-battery protection, current limiting with foldback, thermal limiting and reverse-current protection. The LT1965 series are available in fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V, and as an adjustable device with a 1.20V reference voltage. The package offerings include the 5-lead TO-220, 5-lead DD-Pak as well as the thermally enhanced 8-lead MSOP and low profile (0.75mm) 8-lead 3mm × 3mm DFN.
Applications
- Logic Power Supplies
- Post Regulator for Switching Supplies
- Low Noise Instrumentation
Documentation
Data Sheet 1
User Guide 1
Design Note 1
Technical Articles 1
Brochure 1
Press Release 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 Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
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| LT1965EDD-1.5#PBF | PRODUCTION | |
| LT1965EDD-1.5#TRPBF | PRODUCTION | |
| LT1965EDD-1.8#PBF | PRODUCTION | |
| LT1965EDD-1.8#TRPBF | PRODUCTION | |
| LT1965IDD-1.5#PBF | PRODUCTION | |
| LT1965IDD-1.5#TRPBF | PRODUCTION | |
| LT1965IDD-1.8#PBF | PRODUCTION | |
| LT1965IDD-1.8#TRPBF | PRODUCTION | |
| LT1965IDD-3.3#PBF | PRODUCTION | |
| LT1965IDD-3.3#TRPBF | PRODUCTION | |
|
Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LT1965EDD-2.5#PBF | PRODUCTION | |
| LT1965EDD-2.5#TRPBF | PRODUCTION | |
| LT1965EDD-3.3#PBF | PRODUCTION | |
| LT1965EDD-3.3#TRPBF | PRODUCTION | |
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
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| LT1965EMS8E#PBF | PRODUCTION | |
| LT1965EMS8E#TRPBF | PRODUCTION | |
| LT1965EMS8E-1.5#PBF | PRODUCTION | |
| LT1965EMS8E-1.5#TRPBF | PRODUCTION | |
| LT1965EMS8E-1.8#PBF | PRODUCTION | |
| LT1965EMS8E-1.8#TRPBF | PRODUCTION | |
| LT1965EMS8E-2.5#PBF | PRODUCTION | |
| LT1965EMS8E-2.5#TRPBF | PRODUCTION | |
| LT1965EMS8E-3.3#PBF | PRODUCTION | |
| LT1965EMS8E-3.3#TRPBF | PRODUCTION | |
| LT1965IMS8E#PBF | PRODUCTION | |
| LT1965IMS8E#TRPBF | PRODUCTION | |
| LT1965IMS8E-1.5#PBF | PRODUCTION | |
| LT1965IMS8E-1.5#TRPBF | PRODUCTION | |
| LT1965IMS8E-1.8#PBF | PRODUCTION | |
| LT1965IMS8E-1.8#TRPBF | PRODUCTION | |
| LT1965IMS8E-2.5#PBF | PRODUCTION | |
| LT1965IMS8E-2.5#TRPBF | PRODUCTION | |
| LT1965IMS8E-3.3#PBF | PRODUCTION | |
| LT1965IMS8E-3.3#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
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| LT1965EMS8E#PBF | PRODUCTION | |
| LT1965EMS8E#TRPBF | PRODUCTION | |
| LT1965EMS8E-1.5#PBF | PRODUCTION | |
| LT1965EMS8E-1.5#TRPBF | PRODUCTION | |
| LT1965EMS8E-1.8#PBF | PRODUCTION | |
| LT1965EMS8E-1.8#TRPBF | PRODUCTION | |
| LT1965EMS8E-2.5#PBF | PRODUCTION | |
| LT1965EMS8E-2.5#TRPBF | PRODUCTION | |
| LT1965EMS8E-3.3#PBF | PRODUCTION | |
| LT1965EMS8E-3.3#TRPBF | PRODUCTION | |
| LT1965IMS8E#PBF | PRODUCTION | |
| LT1965IMS8E#TRPBF | PRODUCTION | |
| LT1965IMS8E-1.5#PBF | PRODUCTION | |
| LT1965IMS8E-1.5#TRPBF | PRODUCTION | |
| LT1965IMS8E-1.8#PBF | PRODUCTION | |
| LT1965IMS8E-1.8#TRPBF | PRODUCTION | |
| LT1965IMS8E-2.5#PBF | PRODUCTION | |
| LT1965IMS8E-2.5#TRPBF | PRODUCTION | |
| LT1965IMS8E-3.3#PBF | PRODUCTION | |
| LT1965IMS8E-3.3#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 |
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| LT1965EQ#PBF | PRODUCTION | |
| LT1965EQ#TRPBF | PRODUCTION | |
| LT1965EQ-1.5#PBF | PRODUCTION | |
| LT1965EQ-1.5#TRPBF | PRODUCTION | |
| LT1965EQ-1.8#PBF | PRODUCTION | |
| LT1965EQ-1.8#TRPBF | PRODUCTION | |
| LT1965EQ-2.5#PBF | PRODUCTION | |
| LT1965EQ-2.5#TRPBF | PRODUCTION | |
| LT1965EQ-3.3#PBF | PRODUCTION | |
| LT1965EQ-3.3#TRPBF | PRODUCTION | |
| LT1965ET#PBF | PRODUCTION | |
| LT1965ET-1.5#PBF | PRODUCTION | |
| LT1965ET-1.8#PBF | PRODUCTION | |
| LT1965ET-2.5#PBF | PRODUCTION | |
| LT1965ET-3.3#PBF | PRODUCTION | |
| LT1965HQ#PBF | PRODUCTION | |
| LT1965HQ#TRPBF | PRODUCTION | |
| LT1965HT#PBF | PRODUCTION | |
| LT1965IQ#PBF | PRODUCTION | |
| LT1965IQ#TRPBF | PRODUCTION | |
| LT1965IQ-1.5#PBF | PRODUCTION | |
| LT1965IQ-1.5#TRPBF | PRODUCTION | |
| LT1965IQ-1.8#PBF | PRODUCTION | |
| LT1965IQ-1.8#TRPBF | PRODUCTION | |
| LT1965IQ-2.5#PBF | PRODUCTION | |
| LT1965IQ-2.5#TRPBF | PRODUCTION | |
| LT1965IQ-3.3#PBF | PRODUCTION | |
| LT1965IQ-3.3#TRPBF | PRODUCTION | |
| LT1965IT#PBF | PRODUCTION | |
| LT1965IT-1.5#PBF | PRODUCTION | |
| LT1965IT-1.8#PBF | PRODUCTION | |
| LT1965IT-2.5#PBF | PRODUCTION | |
| LT1965IT-3.3#31PBF | PRODUCTION | |
| LT1965IT-3.3#PBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Hot Swap Controllers 1 | ||
| LT4363 | RECOMMENDED FOR NEW DESIGNS | High Voltage Surge Stopper with Current Limit |
| LDO Linear Regulators 1 | ||
| LT3080 | RECOMMENDED FOR NEW DESIGNS | Adjustable 1.1A Single Resistor Low Dropout Regulator |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LT1963A Series | RECOMMENDED FOR NEW DESIGNS | 1.5A, Low Noise, Fast Transient Response LDO Regulators |
| LT3080 | RECOMMENDED FOR NEW DESIGNS | Adjustable 1.1A Single Resistor Low Dropout Regulator |
Tools & Simulations
LTspice 2
- LT1965 Demo Circuit - 1.1A, Low Noise LDO Linear Regulator (3.3V to 2.5V @ 1.1A)
- LT1965 Demo Circuit - Low Noise, LDO Regulator (10V to 3.3V@1.1A)
Models for the following parts are available in LTspice:
- LT1965
- LT1965-1.5
- LT1965-1.8
- LT1965-2.5
- LT1965-3.3
- LT1965B
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
LT1965EDD Demo Board | Low Noise, Low Dropout Linear Regulator, 2.3V ≤ VIN ≤ 20V, VOUT = 1.2V/1.5V/1.8V/2.5V/3.3V @ 1.1A
Resources
Reference Designs
