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LT1129CST-3.3

Name: LT1129CST-3.3
Rating: 4.7 (12 reviews)

LDO Voltage Regulators LT1129 - Micropower Low Dropout Regulators with Shutdown

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資料表 LT1129CST-3.3 DataSheet
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概述

Description

The LT1129CST-3.3 is a low-dropout (LDO) voltage regulator produced by Analog Devices. It is designed to provide a stable output voltage of 3.3V with a maximum output current of 1A. The device features a low dropout voltage, typically around 300mV at full load, making it suitable for battery-powered applications where efficiency is critical.
Key features include excellent line and load regulation, low quiescent current, and high power supply rejection ratio (PSRR), ensuring minimal noise and ripple at the output. The LT1129CST-3.3 also includes built-in thermal protection and short-circuit protection, enhancing reliability.
It is available in a compact surface-mount package, making it ideal for space-constrained designs in various applications such as telecommunications, industrial automation, and consumer electronics. The device's performance, combined with its ease of use and robust features, makes it a popular choice for engineers seeking reliable voltage regulation solutions.

Features

The LT1129CST-3.3 is a high-performance low-dropout (LDO) voltage regulator designed to provide a stable 3.3V output. Key features include:
1. Low Dropout Voltage: Typically 300 mV at 500 mA load, enabling operation with minimal input-output voltage differential.
2. High Output Current: Capable of supplying up to 1 A, making it suitable for various applications.
3. Low Quiescent Current: Efficient in power consumption, with quiescent current typically around 15 mA.
4. Built-in Protection: Includes thermal shutdown and current limiting to ensure safe operation.
5. Wide Input Voltage Range: Accepts input voltages from 4.5V to 20V, providing flexibility in power supply options.
6. Fast Transient Response: Delivers quick recovery to load changes, ideal for sensitive applications.
7. TO-220 Package: Available in a package that allows for effective heat dissipation.
These features make the LT1129CST-3.3 suitable for powering microcontrollers, sensors, and other electronics requiring a reliable and efficient voltage supply.

Package

The LT1129CST-3.3 is packaged in a 5-lead SOT-23 surface mount package.

Pinout

The LT1129CST-3.3 is a voltage reference from Analog Devices, featuring a total of 8 pins in a SOIC-8 package. Its primary function is to provide a precise 3.3V reference voltage, which is essential for various applications, including analog-to-digital converters and precision instrumentation.
Pin Configuration:
1. VOUT: Output voltage (3.3V reference).
2. GND: Ground reference.
3. NC: No connection.
4. NC: No connection.
5. NC: No connection.
6. NC: No connection.
7. NC: No connection.
8. VREF: Input for external reference if needed.
The LT1129CST-3.3 features low noise, high stability, and temperature coefficients, making it suitable for high-performance applications.

Manufacturer

The LT1129CST-3.3 is manufactured by Analog Devices, Inc. Analog Devices is a prominent American multinational semiconductor company specializing in data conversion, signal processing, and power management solutions. Founded in 1965, the company is known for its innovative analog, mixed-signal, and digital signal processing (DSP) technologies. It serves various industries, including telecommunications, automotive, industrial automation, healthcare, and consumer electronics. The LT1129CST-3.3 is a precision voltage reference, indicating the company's focus on high-performance analog components.

Application

The LT1129CST-3.3 is a precision voltage reference used in various applications, including power management, data acquisition systems, instrumentation, and analog-to-digital converters. It provides stable reference voltages for high-accuracy circuits, often used in industrial, automotive, and consumer electronics. Its low noise and temperature stability make it suitable for precision measurement and control systems.

Equivalent

Equivalent products to the LT1129CST-3.3 include the LM1117-3.3, MCP1700-3302E, and MIC5205-3.3. These voltage regulators provide similar output voltage and current capabilities, making them suitable alternatives in various applications. Always verify specifications for compatibility with your circuit.