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LT1129IST-5
+NomenclatureIC REG LINEAR 5V 700MA SOT223-3
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FabricantAnalog Equipment GmbH.
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Pièce fabricant #LT1129IST-5
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Fiche technique LT1129IST-5 DataSheet
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Package TO-261-4,TO-261AA
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En stock6490
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Spécifications
| Attribut | Valeur |
| Package | Tube |
| ProductStatus | Obsolete |
| OutputConfiguration | Positive |
| OutputType | Fixed |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 30V |
| Voltage-Output(Min/Fixed) | 5V |
| VoltageDropout(Max) | 0.7V @ 700mA |
| Current-Output | 700mA |
| Current-Quiescent(Iq) | 70 µA |
| Current-Supply(Max) | 90 mA |
| PSRR | 64dB (120Hz) |
| ControlFeatures | Enable |
| ProtectionFeatures | Over Temperature, Reverse Polarity |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | TO-261-4, TO-261AA |
Présentation
Description
The LT1129IST-5 is a low dropout (LDO) linear voltage regulator designed for efficient power management in electronic devices. It offers a fixed 5V output voltage with a maximum output current of up to 700mA. Known for its high precision and low noise characteristics, the LT1129IST-5 is ideal for applications requiring stable and reliable power delivery.
One of its key features is its low dropout voltage, typically around 0.4V at full load, which ensures efficient operation even with minimal input-output voltage differential. This makes it suitable for battery-powered devices where power efficiency is critical. The regulator also includes features such as current limiting and thermal shutdown to protect against overcurrent and overheating, enhancing its reliability and durability.
Packaged in a compact SOT-223 footprint, the LT1129IST-5 is easy to integrate into space-constrained designs. Its versatility and robust performance make it suitable for a variety of applications, including consumer electronics, industrial equipment, and communication devices, where maintaining a consistent power supply is essential.
One of its key features is its low dropout voltage, typically around 0.4V at full load, which ensures efficient operation even with minimal input-output voltage differential. This makes it suitable for battery-powered devices where power efficiency is critical. The regulator also includes features such as current limiting and thermal shutdown to protect against overcurrent and overheating, enhancing its reliability and durability.
Packaged in a compact SOT-223 footprint, the LT1129IST-5 is easy to integrate into space-constrained designs. Its versatility and robust performance make it suitable for a variety of applications, including consumer electronics, industrial equipment, and communication devices, where maintaining a consistent power supply is essential.
Equivalent
The LT1129IST-5 is a low-dropout (LDO) voltage regulator. Equivalent products include the LM2937-5.0 from Texas Instruments, MIC2937A-5.0 from Microchip Technology, and the NCP1117ST50T3G from ON Semiconductor. When selecting an equivalent, ensure that the electrical specifications, package type, and thermal performance match your application requirements.
Features
The LT1129IST-5 is a low dropout (LDO) voltage regulator with a few key features:
1. Output Voltage: It provides a fixed output voltage of 5V.
2. Low Dropout Voltage: Offers a low dropout performance of approximately 0.4V at full load, allowing for efficient operation even with minimal voltage difference between input and output.
3. Output Current: Capable of delivering up to 700mA of output current.
4. Quiescent Current: Features low quiescent current, making it suitable for battery-powered applications.
5. Stability: Requires only a small 10μF tantalum capacitor for stability, which simplifies design requirements.
6. Protection Features: Includes current limiting and thermal shutdown to protect against overload conditions.
7. Package: Available in a thermally enhanced 3-pin SOT-223 package for surface mount applications.
8. Temperature Range: Operates over a wide temperature range, typically from -40°C to 125°C.
These features make the LT1129IST-5 suitable for applications requiring efficient power supply regulation with minimal thermal and spatial footprint.
1. Output Voltage: It provides a fixed output voltage of 5V.
2. Low Dropout Voltage: Offers a low dropout performance of approximately 0.4V at full load, allowing for efficient operation even with minimal voltage difference between input and output.
3. Output Current: Capable of delivering up to 700mA of output current.
4. Quiescent Current: Features low quiescent current, making it suitable for battery-powered applications.
5. Stability: Requires only a small 10μF tantalum capacitor for stability, which simplifies design requirements.
6. Protection Features: Includes current limiting and thermal shutdown to protect against overload conditions.
7. Package: Available in a thermally enhanced 3-pin SOT-223 package for surface mount applications.
8. Temperature Range: Operates over a wide temperature range, typically from -40°C to 125°C.
These features make the LT1129IST-5 suitable for applications requiring efficient power supply regulation with minimal thermal and spatial footprint.
Pinout
The LT1129IST-5 is a low dropout (LDO) linear voltage regulator that comes in a 5-pin SOT-223 package. It is designed to provide a fixed output voltage of 5V. The pin functions are as follows:
1. Input (Pin 1): This pin receives the input voltage, which should be higher than the output voltage by the dropout voltage to maintain regulation.
2. Ground (Pin 2): This is the common ground connection for the input and output voltages.
3. Output (Pin 3): This pin provides the regulated 5V output.
4. Adjust (Pin 4): This pin is not present in the fixed version of the LT1129IST-5, as it does not require external resistors for setting the output voltage.
5. Tab (Pin 5): The SOT-223 package's tab is typically connected to ground and functions as a heat sink to dissipate heat generated by the device during operation.
The LT1129IST-5 is known for its low quiescent current and low dropout voltage, making it suitable for battery-powered applications.
1. Input (Pin 1): This pin receives the input voltage, which should be higher than the output voltage by the dropout voltage to maintain regulation.
2. Ground (Pin 2): This is the common ground connection for the input and output voltages.
3. Output (Pin 3): This pin provides the regulated 5V output.
4. Adjust (Pin 4): This pin is not present in the fixed version of the LT1129IST-5, as it does not require external resistors for setting the output voltage.
5. Tab (Pin 5): The SOT-223 package's tab is typically connected to ground and functions as a heat sink to dissipate heat generated by the device during operation.
The LT1129IST-5 is known for its low quiescent current and low dropout voltage, making it suitable for battery-powered applications.
Manufacturer
The LT1129IST-5 is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in designing and manufacturing a wide range of analog, mixed-signal, and digital signal processing integrated circuits. Their products are widely used in various industries, including communications, automotive, industrial, and consumer electronics. The company is known for its high-performance solutions that address complex challenges in signal processing and power management.
Application
The LT1129IST-5 is a low-dropout (LDO) linear voltage regulator commonly used in various applications due to its low quiescent current and dropout voltage. Key application areas include:
1. Battery-Powered Devices: Its low quiescent current makes it ideal for extending battery life in portable electronics.
2. Telecommunications Equipment: Provides stable voltage in communication devices.
3. Consumer Electronics: Used in devices like cameras and handheld gadgets for efficient power management.
4. Industrial Applications: Suitable for systems requiring stable voltage under varying load conditions.
5. Automotive Systems: Provides reliable power regulation in automotive electronics.
6. Microprocessor Power Supply: Used to supply stable voltage to microcontrollers and processors.
These characteristics make it versatile for use in both consumer and industrial electronics.
1. Battery-Powered Devices: Its low quiescent current makes it ideal for extending battery life in portable electronics.
2. Telecommunications Equipment: Provides stable voltage in communication devices.
3. Consumer Electronics: Used in devices like cameras and handheld gadgets for efficient power management.
4. Industrial Applications: Suitable for systems requiring stable voltage under varying load conditions.
5. Automotive Systems: Provides reliable power regulation in automotive electronics.
6. Microprocessor Power Supply: Used to supply stable voltage to microcontrollers and processors.
These characteristics make it versatile for use in both consumer and industrial electronics.
Package
The LT1129IST-5 is a low dropout (LDO) linear voltage regulator from Analog Devices. It comes in a Surface Mount Technology (SMT) package, specifically the SOT-223 package type, which is suitable for compact and high-density applications.
