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LT1129IST-3.3

Name: LT1129IST-3.3
Rating: 4.7 (12 reviews)

LDO Voltage Regulators LT1129 - Micropower Low Dropout Regulators with Shutdown

Производитель
Мфр. Часть #LT1129IST-3.3
Пакет
Лист данных LT1129IST-3.3 DataSheet
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Спецификации

Обзор

Description

The LT1129IST-3.3 is a precision voltage reference produced by Analog Devices, designed for applications requiring stable and accurate reference voltages. It provides a fixed output voltage of 3.3V and features low output noise and high accuracy with a temperature coefficient of only 15 ppm/°C.
The device operates over a wide supply voltage range and is known for its low dropout voltage, making it suitable for battery-powered applications. It has excellent load and line regulation characteristics, ensuring consistent output under varying operating conditions.
The LT1129IST-3.3 is packaged in a compact SOT-23 format, facilitating integration into space-constrained designs. Its low power consumption and robust performance make it ideal for use in precision measurement systems, data acquisition, and instrumentation applications.
Overall, the LT1129IST-3.3 is a reliable choice for engineers seeking a high-performance voltage reference solution.

Features

The LT1129IST-3.3 is a low-dropout (LDO) voltage regulator designed to provide a stable output voltage of 3.3V. Key features include:
1. Low Dropout Voltage: Typically 0.2V at 100mA load, allowing efficient operation close to the input voltage.
2. High Accuracy: Output voltage tolerance of ±2%, ensuring precise voltage regulation.
3. Low Quiescent Current: Consumes only 50µA of quiescent current, enhancing efficiency in battery-powered applications.
4. Wide Input Voltage Range: Accepts input voltages from 3.6V to 20V, providing flexibility in various applications.
5. Thermal Protection: Includes built-in thermal shutdown to prevent damage due to overheating.
6. Short-Circuit Protection: Safeguards against output short circuits, ensuring reliability.
7. SOT-223 Package: Compact package size suitable for space-constrained designs.
These features make the LT1129IST-3.3 ideal for portable and low-power devices, providing reliable power management in a variety of electronic applications.

Package

The LT1129IST-3.3 is packaged in a SOT-223 type package.

Pinout

The LT1129IST-3.3 is a low-dropout linear voltage regulator from Analog Devices with a pin count of 5. Its primary function is to provide a stable output voltage of 3.3V from an input voltage that can be slightly higher than the output voltage, making it suitable for various power supply applications.
### Pin Configuration:
1. Input (VIN): Connects to the input voltage source.
2. Ground (GND): Common ground connection.
3. Output (VOUT): Provides a regulated output voltage of 3.3V.
4. Bypass (BYPS): Used to connect a capacitor for noise reduction (optional).
5. Thermal Pad: For heat dissipation, not a functional pin but important for thermal management.
The LT1129IST-3.3 is designed for applications requiring low noise and high performance, making it ideal for sensitive electronic devices.

Manufacturer

The LT1129IST-3.3 is manufactured by Analog Devices, Inc. Analog Devices is a global semiconductor company that specializes in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965, the company is known for its innovative solutions in various applications, including communications, automotive, healthcare, and industrial automation. The LT1129IST-3.3 is a low-dropout (LDO) voltage regulator, which is part of their extensive product portfolio aimed at providing efficient power management solutions.

Application

The LT1129IST-3.3 is a precision voltage reference used in various applications, including analog-to-digital converters (ADCs), digital-to-analog converters (DACs), data acquisition systems, and instrumentation. It provides a stable output voltage of 3.3V with low noise and high accuracy, making it suitable for high-performance circuits, power supply regulation, and battery-operated devices. Additionally, it can be used in temperature sensors and precision measurement systems where stable reference voltage is critical.

Equivalent

Equivalent products to the LT1129IST-3.3 voltage reference chip include the LM1117-3.3, LM1084-3.3, and MCP1700-3302. Additionally, the LM2937-3.3 and MIC5205-3.3 can also serve as alternatives, depending on specific application requirements such as output current, dropout voltage, and thermal performance. Always verify the specific datasheet for compatibility.

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