LT3045:High Performance Regulator
Linear Technology/Analog Devices
Enable, Power Good, Soft Start Programmable 0.5mm LT3045 PMIC 10 10-WFDFN Exposed Pad









Enable, Power Good, Soft Start Programmable 0.5mm LT3045 PMIC 10 10-WFDFN Exposed Pad
The LT3045 is a high performance low dropout linear regulator with LTC's ultralow noise and ultrahigh PSRR architecture. Check out more details on the following article.
LT3045 Description
The LT3045 is a high performance low dropout linear regulator with LTC's ultralow noise and ultrahigh PSRR architecture, designed to power noise sensitive applications. The LT3045, which is designed as a precision current reference followed by a high performance voltage buffer, may be readily paralleled to minimize noise, boost output current, and spread heat on the PCB. In addition to the LT3045 feature set, the LT3045-1 includes a VIOC tracking function that controls an upstream switching converter to maintain a constant voltage across the LT3045-1 and therefore reduce power consumption.
LT3045 Pinout

LT3045 CAD Mode
Symbol

Footprint

3D Model

LT3045 Features
Ultralow RMS Noise: 0.8µVRMS (10Hz to 100kHz)
Ultralow Spot Noise: 2nV/√Hz at 10kHz
Ultrahigh PSRR: 76dB at 1MHz
Output Current: 500mA
Wide Input Voltage Range: 1.8V to 20V
Single Capacitor Improves Noise and PSRR
100µA SET Pin Current: ±1% Initial Accuracy
VIOC Pin Controls Upstream Regulator to Minimize Power Dissipation
Single Resistor Programs Output Voltage
Programmable Current Limit
Low Dropout Voltage: 260mV
Output Voltage Range: 0V to 15V
Programmable Power Good
Fast Start-Up Capability
Precision Enable/UVLO
Parallelable for Lower Noise and Higher Current
Internal Current Limit with Foldback
Minimum Output Capacitor: 10µF Ceramic
Reverse Battery and Reverse Current Protection
12-Lead MSOP and 3mm × 3mm DFN Packages
LT3045 Functional Block Diagram

Specifications
- TypeParameter
- Factory Lead Time8 Weeks
- Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
10-WFDFN Exposed Pad - Surface Mount
having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.
YES - Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-40°C~150°C TJ - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tube - Published2011
- Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
1 (Unlimited) - Number of Terminations10
- Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
DUAL - Terminal Form
Occurring at or forming the end of a series, succession, or the like; closing; concluding.
NO LEAD - Number of Functions1
- Terminal Pitch
The center distance from one pole to the next.
0.5mm - Base Part Number
The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.
LT3045 - Pin Count
a count of all of the component leads (or pins)
10 - Current - Supply (Max)
The parameter "Current - Supply (Max)" in electronic components refers to the maximum amount of current that a component can draw from a power supply for its operation. This parameter is critical for ensuring that the power supply can adequately meet the demands of the component without causing damage or malfunction. Exceeding this specified maximum current can lead to overheating, reduced performance, or failure of the component. It is essential to consider this value when designing or integrating components into electronic circuits to maintain reliability and functionality.
25mA - Voltage - Input (Max)
Voltage - Input (Max) is a parameter in electronic components that specifies the maximum voltage that can be safely applied to the input of the component without causing damage. This parameter is crucial for ensuring the proper functioning and longevity of the component. Exceeding the maximum input voltage can lead to electrical overstress, which may result in permanent damage or failure of the component. It is important to carefully adhere to the specified maximum input voltage to prevent any potential issues and maintain the reliability of the electronic system.
20V - Output Type
The "Output Type" parameter in electronic components refers to the type of signal or data that is produced by the component as an output. This parameter specifies the nature of the output signal, such as analog or digital, and can also include details about the voltage levels, current levels, frequency, and other characteristics of the output signal. Understanding the output type of a component is crucial for ensuring compatibility with other components in a circuit or system, as well as for determining how the output signal can be utilized or processed further. In summary, the output type parameter provides essential information about the nature of the signal that is generated by the electronic component as its output.
Programmable - Output Configuration
Output Configuration in electronic components refers to the arrangement or setup of the output pins or terminals of a device. It defines how the output signals are structured and how they interact with external circuits or devices. The output configuration can determine the functionality and compatibility of the component in a circuit design. Common types of output configurations include single-ended, differential, open-drain, and push-pull configurations, each serving different purposes and applications in electronic systems. Understanding the output configuration of a component is crucial for proper integration and operation within a circuit.
Positive - Control Features
Control features in electronic components refer to specific functionalities or characteristics that allow users to manage and regulate the operation of the component. These features are designed to provide users with control over various aspects of the component's performance, such as adjusting settings, monitoring parameters, or enabling specific modes of operation. Control features can include options for input/output configurations, power management, communication protocols, and other settings that help users customize and optimize the component's behavior according to their requirements. Overall, control features play a crucial role in enhancing the flexibility, usability, and performance of electronic components in various applications.
Enable, Power Good, Soft Start - Voltage - Output (Min/Fixed)
Voltage - Output (Min/Fixed) refers to the minimum fixed output voltage level that an electronic component, such as a voltage regulator or power supply, is designed to provide under specified load conditions. This parameter ensures that the device consistently delivers a reliable voltage that meets the requirements of the connected circuits or components. It is critical for applications where stable and predictable voltage is necessary for proper operation.
0V - Number of Regulators
A regulator is a mechanism or device that controls something such as pressure, temperature, or fluid flow. The voltage regulator keeps the power level stabilized. A regulator is a mechanism or device that controls something such as pressure, temperature, or fluid flow.
1 - Protection Features
Protection features in electronic components refer to the built-in mechanisms or functionalities designed to safeguard the component and the overall system from various external factors or internal faults. These features are crucial for ensuring the reliability, longevity, and safety of the electronic device. Common protection features include overvoltage protection, overcurrent protection, reverse polarity protection, thermal protection, and short-circuit protection. By activating these features when necessary, the electronic component can prevent damage, malfunctions, or hazards that may arise from abnormal operating conditions or unforeseen events. Overall, protection features play a vital role in enhancing the robustness and resilience of electronic components in diverse applications.
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO) - Current - Quiescent (Iq)
The parameter "Current - Quiescent (Iq)" in electronic components refers to the amount of current consumed by a device when it is in a quiescent or idle state, meaning when it is not actively performing any tasks or operations. This parameter is important because it represents the baseline power consumption of the device even when it is not actively being used. A lower quiescent current (Iq) value is desirable as it indicates that the device is more energy-efficient and will consume less power when not in use, which can help extend battery life in portable devices and reduce overall power consumption in electronic systems. Designers often pay close attention to the quiescent current specification when selecting components for low-power applications or battery-operated devices.
20μA - Voltage Dropout (Max)
Voltage Dropout (Max) refers to the minimum voltage difference between the input and output of a voltage regulator or linear power supply needed to maintain proper regulation. It indicates the maximum allowable voltage drop across the device for it to function effectively without dropout. If the input voltage falls below this threshold, the output voltage may drop below the specified level, leading to potential operational issues for connected components. This parameter is critical for ensuring stable and reliable power delivery in electronic circuits.
0.45V @ 500mA - PSRR
PSRR stands for Power Supply Rejection Ratio. It is a measure of how well a device, such as an amplifier or a voltage regulator, can reject variations in the power supply voltage. A high PSRR value indicates that the device is able to maintain its performance even when the power supply voltage fluctuates. This parameter is important in ensuring stable and reliable operation of electronic components, especially in applications where the power supply voltage may not be perfectly regulated. A good PSRR helps to minimize noise and interference in the output signal of the device.
117dB ~ 53dB (120Hz ~ 10MHz) - Length3mm
- Height Seated (Max)
Height Seated (Max) is a parameter in electronic components that refers to the maximum allowable height of the component when it is properly seated or installed on a circuit board or within an enclosure. This specification is crucial for ensuring proper fit and alignment within the overall system design. Exceeding the maximum seated height can lead to mechanical interference, electrical shorts, or other issues that may impact the performance and reliability of the electronic device. Manufacturers provide this information to help designers and engineers select components that will fit within the designated space and function correctly in the intended application.
0.8mm - Width3mm
- RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant
LT3045 Applications
RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs
Very Low Noise Instrumentation
High Speed/High Precision Data Converters
Medical Applications: Imaging, Diagnostics
Post-Regulator for Switching Supplies
LT3045 Typical Application Circuit

LT3045 Typical Application Circuit
LT3045 Package

LT3045 Manufacturer
Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing and marketing a broad line of high performance analog integrated circuits for major companies worldwide for three decades. The Company's products provide an essential bridge between our analog world and the digital electronics in communications, networking, industrial, automotive, computer, medical, instrumentation, consumer, and military and aerospace systems. Linear Technology produces power management, data conversion, signal conditioning, RF and interface ICs, µModule subsystems, and wireless sensor network products.
Trend Analysis
Parts with Similar Specs
Datasheet PDF
- Datasheets :
- Other Related Documents :
- Simulation Models :
What is LT3045?
The LT3045 is a high performance low dropout linear regulator with LTC's ultralow noise and ultrahigh PSRR architecture, designed to power noise sensitive applications. The LT3045, which is designed as a precision current reference followed by a high performance voltage buffer, may be readily paralleled to minimize noise, boost output current, and spread heat on the PCB. In addition to the LT3045 feature set, the LT3045-1 includes a VIOC tracking function that controls an upstream switching converter to maintain a constant voltage across the LT3045-1 and therefore reduce power consumption.
What is the recommended operating temperature of the component?
-40°C~125°C TJ.
What is the package of the device?
12-TSSOP (0.118, 3.00mm Width) Exposed Pad.
What is the component’s number of pins?
12.
ADXL337 Accelerometer:Datasheet, Pinout and Applications28 July 20212760
KSC1845 Transistor: Datasheet, Pinout, Equivalent06 December 20213533
LTC6752IMS8-2#TRPBF Linear Comparator: Product Overview and Applications06 March 2024204
MAX3237EAI Transceiver: Circuits, Pinout, and Datasheet17 April 20251474
UC3843 Current Mode PWM Controller Design Guide14 January 2026469
WM8960 Stereo CODEC: Pinout, Features and Datasheet12 February 20225236
SS16 DIODE Schottky Rectifier 60 V 1 A SMA[FAQ]: Datasheet, Features, and Applications10 March 20222085
BSH103 N-Chanel MOSFET: MOS Transistor, 30V, Datasheet and Pinout11 February 2022427
Humidity Sensor: Classification, Package and Application13 November 20254272
Buffer Amplifier | Operating Principle, Advantages, and Applications21 July 20259485
What is Digital Power Supply?10 November 20202928
The Development Trends in the Field of Electronic Component Applications28 July 20234633
What is an Inverting Amplifier?25 April 202510961
What is a Cell Phone Antenna?21 July 202130520
Assessing the Effectiveness of Transient Voltage Suppressors in Modern Electronics05 June 2025392
Dismantling and Analyzing Each Component in the Switching Power Supply16 February 20228002
Linear Technology/Analog Devices
In Stock: 500
United States
China
Canada
Japan
Russia
Germany
United Kingdom
Singapore
Italy
Hong Kong(China)
Taiwan(China)
France
Korea
Mexico
Netherlands
Malaysia
Austria
Spain
Switzerland
Poland
Thailand
Vietnam
India
United Arab Emirates
Afghanistan
Åland Islands
Albania
Algeria
American Samoa
Andorra
Angola
Anguilla
Antigua & Barbuda
Argentina
Armenia
Aruba
Australia
Azerbaijan
Bahamas
Bahrain
Bangladesh
Barbados
Belarus
Belgium
Belize
Benin
Bermuda
Bhutan
Bolivia
Bonaire, Sint Eustatius and Saba
Bosnia & Herzegovina
Botswana
Brazil
British Indian Ocean Territory
British Virgin Islands
Brunei
Bulgaria
Burkina Faso
Burundi
Cabo Verde
Cambodia
Cameroon
Cayman Islands
Central African Republic
Chad
Chile
Christmas Island
Cocos (Keeling) Islands
Colombia
Comoros
Congo
Congo (DRC)
Cook Islands
Costa Rica
Côte d’Ivoire
Croatia
Cuba
Curaçao
Cyprus
Czechia
Denmark
Djibouti
Dominica
Dominican Republic
Ecuador
Egypt
El Salvador
Equatorial Guinea
Eritrea
Estonia
Eswatini
Ethiopia
Falkland Islands
Faroe Islands
Fiji
Finland
French Guiana
French Polynesia
Gabon
Gambia
Georgia
Ghana
Gibraltar
Greece
Greenland
Grenada
Guadeloupe
Guam
Guatemala
Guernsey
Guinea
Guinea-Bissau
Guyana
Haiti
Honduras
Hungary
Iceland
Indonesia
Iran
Iraq
Ireland
Isle of Man
Israel
Jamaica
Jersey
Jordan
Kazakhstan
Kenya
Kiribati
Kosovo
Kuwait
Kyrgyzstan
Laos
Latvia
Lebanon
Lesotho
Liberia
Libya
Liechtenstein
Lithuania
Luxembourg
Macao(China)
Madagascar
Malawi
Maldives
Mali
Malta
Marshall Islands
Martinique
Mauritania
Mauritius
Mayotte
Micronesia
Moldova
Monaco
Mongolia
Montenegro
Montserrat
Morocco
Mozambique
Myanmar
Namibia
Nauru
Nepal
New Caledonia
New Zealand
Nicaragua
Niger
Nigeria
Niue
Norfolk Island
North Korea
North Macedonia
Northern Mariana Islands
Norway
Oman
Pakistan
Palau
Palestinian Authority
Panama
Papua New Guinea
Paraguay
Peru
Philippines
Pitcairn Islands
Portugal
Puerto Rico
Qatar
Réunion
Romania
Rwanda
Samoa
San Marino
São Tomé & Príncipe
Saudi Arabia
Senegal
Serbia
Seychelles
Sierra Leone
Sint Maarten
Slovakia
Slovenia
Solomon Islands
Somalia
South Africa
South Sudan
Sri Lanka
St Helena, Ascension, Tristan da Cunha
St. Barthélemy
St. Kitts & Nevis
St. Lucia
St. Martin
St. Pierre & Miquelon
St. Vincent & Grenadines
Sudan
Suriname
Svalbard & Jan Mayen
Sweden
Syria
Tajikistan
Tanzania
Timor-Leste
Togo
Tokelau
Tonga
Trinidad & Tobago
Tunisia
Turkey
Turkmenistan
Turks & Caicos Islands
Tuvalu
U.S. Outlying Islands
U.S. Virgin Islands
Uganda
Ukraine
Uruguay
Uzbekistan
Vanuatu
Vatican City
Venezuela
Wallis & Futuna
Yemen
Zambia
Zimbabwe


Product
Brand
Articles
Tools






