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LM1117DT-3.3

Name: LM1117DT-3.3
Rating: 4.7 (12 reviews)

LDO Voltage Regulators

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規格

Standard Pack Qty	75
Packaging	Tube

概述

Description

The LM1117DT-3.3 is a low-dropout (LDO) voltage regulator designed to provide a stable output voltage of 3.3V with a maximum output current of 1A. It features a low dropout voltage of approximately 1.2V at full load, making it suitable for applications where the input voltage is close to the output voltage.
This device has built-in thermal shutdown and current limiting for protection against overload conditions. It operates over a wide input voltage range, typically from 4.75V to 15V. The LM1117DT-3.3 is available in an SOT-223 package, making it compact and ideal for space-constrained designs.
Key applications include power supplies for microcontrollers, DSPs, and other digital circuits. It also supports bypass capacitors to improve transient response and stability. Overall, the LM1117DT-3.3 is a reliable choice for various electronic applications requiring a stable 3.3V power supply.

Features

The LM1117DT-3.3 is a low dropout linear voltage regulator designed to provide a stable output voltage of 3.3V. Here are its key features:
1. Input Voltage Range: Operates with an input voltage of up to 15V.
2. Output Current: Capable of delivering up to 800mA of output current.
3. Low Dropout Voltage: Typically 1.2V at full load, allowing for efficient operation with minimal input-output voltage difference.
4. High Ripple Rejection: Enhances stability and performance in noisy environments.
5. Thermal Shutdown Protection: Prevents damage from overheating.
6. Short Circuit Protection: Safeguards the device and connected circuits under fault conditions.
7. TTL-Compatible Enable Pin: Allows for easy control of the regulator's operation.
8. Compact Package: Available in a surface-mount SO-8 package, facilitating efficient PCB layout.
These features make the LM1117DT-3.3 suitable for various applications, including powering microcontrollers, sensors, and other electronic devices requiring a stable voltage.

Package

The LM1117DT-3.3 is typically packaged in a TO-220 package type. This package features a metal tab for excellent thermal dissipation and is designed for through-hole mounting in electronic circuits.

Pinout

The LM1117DT-3.3 is a low dropout (LDO) voltage regulator with a pin count of 5.
### Pin Functions:
1. Input (VIN): This pin connects to the input voltage (up to 15V) that needs regulation.
2. Output (VOUT): This pin provides the regulated output voltage of 3.3V.
3. Ground (GND): This pin is connected to the ground reference of the circuit.
4. Adjust (ADJ): This pin is used to set the output voltage for adjustable versions; in the fixed 3.3V version, it is typically not used.
5. Enable (EN): This pin is used to enable or disable the device; tying it to a high voltage enables the regulator.
The LM1117DT-3.3 is commonly used in applications that require stable voltage regulation, such as powering microcontrollers, sensors, and other electronic components.

Manufacturer

The LM1117DT-3.3 is manufactured by Texas Instruments (TI), a prominent semiconductor company based in the United States. Texas Instruments specializes in designing and manufacturing analog and embedded processing semiconductor solutions. The company is known for its broad portfolio of products, which includes integrated circuits for various applications such as power management, signal processing, and data conversion. TI serves a wide range of industries, including automotive, communications, consumer electronics, industrial, and medical sectors. With a strong focus on innovation and technology, Texas Instruments is recognized as a leading player in the global semiconductor market.

Application

The LM1117DT-3.3 is a low-dropout (LDO) voltage regulator commonly used in applications requiring a stable 3.3V output. It is suitable for powering microcontrollers, sensors, and digital logic circuits. Additionally, it finds use in battery-operated devices, embedded systems, and telecommunications equipment, where efficient voltage regulation is essential. Its compact design makes it ideal for space-constrained applications in consumer electronics, automotive systems, and industrial controls.

Equivalent

Equivalent products to the LM1117DT-3.3 include the AMS1117-3.3, LM1117-3.3, MCP1825S-3302E, and LP2985-33. These linear voltage regulators provide similar output voltage of 3.3V and are commonly used for low-dropout applications. Always verify specifications like current rating and package type for compatibility.