LM1117T-ADJ

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LM1117T-ADJ

+Nomenclature

IC REG LIN POS ADJ 800MA TO220-3

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Spécifications

Attribut Valeur
Part Status Obsolete
Output Configuration Positive
Output Type Adjustable
Number of Regulators 1
Voltage - Input (Max) 15V
Voltage - Output (Min / Fixed) 1.25V
Voltage - Output (Max) 13.8V
Voltage Dropout (Max) 1.2V @ 800mA
Current - Output 800mA
Current - Quiescent (Iq) 5 mA
Current - Supply (Max) 10 mA
PSRR 75dB (120Hz)
Protection Features Over Current, Over Temperature
Operating Temperature 0°C ~ 125°C
Mounting Type Through Hole
Package / Case TO-220-3
Supplier Device Package TO-220-3
Base Product Number LM1117

Présentation

Description

The LM1117T-ADJ is a low-dropout (LDO) voltage regulator designed to provide a stable output voltage with minimal input-output voltage difference. It can deliver up to 1A of output current while maintaining high efficiency. The “ADJ” in its name indicates that the output voltage is adjustable, allowing designers to set the output voltage between 1.25V and 15V using external resistors.
Key features include:
- Low dropout voltage (typically 1.2V at full load), enabling better performance in battery-powered applications.
- Built-in over-current, over-temperature protection, enhancing reliability.
- Wide input voltage range (up to 15V), making it suitable for various applications.
- Compatible with a range of capacitors, simplifying design requirements.
The LM1117T-ADJ is commonly used in power management systems, portable devices, and microcontroller applications where precise voltage regulation is essential. Its compact package and efficiency make it a popular choice among engineers.

Equivalent

Equivalent products to the LM1117T-ADJ include the LD1117, AMS1117, and MIC2940. These voltage regulators share similar features, such as adjustable output voltage and low dropout characteristics. Always verify specifications like output current, voltage range, and thermal performance to ensure compatibility in your specific application.

Features

The LM1117T-ADJ is a low dropout (LDO) voltage regulator designed for adjustable output voltage applications. Key features include:
1. Adjustable Output Voltage: Supports output voltage ranges from 1.25V to 5V, adjustable with external resistors.
2. Low Dropout Voltage: Typically 1.2V at 800mA load, enabling operation with minimal input-output voltage difference.
3. High Output Current: Capable of delivering output currents up to 800mA, suitable for various applications.
4. Built-in Thermal Protection: Prevents damage from overheating, ensuring reliability.
5. Short-Circuit Protection: Provides current limiting to protect the device and load in case of short circuits.
6. Wide Input Voltage Range: Accepts input voltages from 4.75V to 20V, offering compatibility with diverse power sources.
7. Low Quiescent Current: Features low standby current, enhancing efficiency in battery-powered applications.
8. Standard SOT-223 Package: Compact design suitable for space-constrained environments.
The LM1117T-ADJ is ideal for powering sensitive electronic devices requiring stable voltage regulation.

Pinout

The LM1117T-ADJ is an adjustable low-dropout (LDO) voltage regulator with a pin count of 3. The functions of its pins are as follows:
1. Input (Vin): This pin is where the input voltage is connected. It typically requires a voltage higher than the desired output voltage by a specified dropout voltage.
2. Output (Vout): This pin provides the regulated output voltage, which can be adjusted using external resistors to set the desired output level.
3. Adjust (Adj): This pin is used to adjust the output voltage. By connecting a resistor divider from Vout to Adj and GND, the output voltage can be set according to the desired value, typically between 1.25V and 15V.
The LM1117T-ADJ is widely used in applications requiring a stable output voltage with low dropout, such as in power management for microcontrollers and other digital devices.

Manufacturer

The LM1117T-ADJ is manufactured by Texas Instruments, a prominent semiconductor company based in the United States. Texas Instruments (TI) specializes in the design and manufacturing of analog and embedded processing chips. Founded in 1930, the company has a long history in the electronics industry and is known for its innovation in integrated circuits (ICs), digital signal processors (DSPs), microcontrollers, and a wide range of analog components, including voltage regulators like the LM1117 series.
The LM1117T-ADJ is a low-dropout (LDO) voltage regulator, which is widely used in various electronic applications. TI serves diverse markets including automotive, industrial, communications, and consumer electronics, providing solutions that enhance system performance while reducing power consumption. Texas Instruments is recognized for its commitment to research and development, contributing significantly to advancements in technology and electronic design.

Application

The LM1117T-ADJ is a low dropout (LDO) voltage regulator commonly used in various applications, including:
1. Power Supply for Microcontrollers: Provides stable voltage for MCUs in embedded systems.
2. Battery-Powered Devices: Regulates voltage for efficiency in portable electronics.
3. Computer Peripherals: Supplies power to devices like USB ports and hard drives.
4. Telecommunications: Ensures reliable voltage for routers and modems.
5. Consumer Electronics: Used in audio equipment, TVs, and gaming consoles.
6. LED Drivers: Powers LED circuits with adjustable voltage requirements.
Its adjustable output voltage feature enables versatile applications across different electronic designs.

Package

The LM1117T-ADJ is typically packaged in a TO-220 or SOT-223 package type. These packages are designed for efficient thermal management and ease of mounting in various electronic applications.