AMS1117-1.8

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AMS1117-1.8

+Nomenclature

IC REG LINEAR 1.8V 1A SOT-223-3L

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Spécifications

Attribut Valeur
Series AMS1117
Part Status Active
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 12V
Voltage - Output (Min / Fixed) 1.8V
Voltage Dropout (Max) 1.3V @ 1A
Current - Output 1A
Current - Quiescent (Iq) 10 mA
PSRR 75dB (120Hz)
Control Features Current Limit
Protection Features Over Current, Over Temperature
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case TO-261-4, TO-261AA
Supplier Device Package SOT-223-3L

Présentation

Description

The AMS1117-1.8 is a low dropout linear voltage regulator designed to provide a stable 1.8V output from a higher voltage input. It is part of the AMS1117 series, known for its ease of use and reliability in delivering precise voltage regulation. The AMS1117-1.8 can handle up to 1A of output current, making it suitable for various applications, including powering microcontrollers, sensors, and other digital circuits.
This regulator features a low dropout voltage, typically around 1.1V at full load, meaning it requires a minimal difference between input and output voltages to maintain regulation. It also includes internal current limiting and thermal shutdown protection, ensuring the device's safety under overcurrent or overheating conditions.
The AMS1117-1.8 is available in various package types, including SOT-223, TO-252, and SO-8, providing flexibility in design choices. Its simple design requires minimal external components, usually just a couple of capacitors for stability and noise reduction. This makes it an ideal choice for cost-effective, space-constrained applications needing reliable voltage regulation.

Equivalent

The AMS1117-1.8 is a low dropout (LDO) voltage regulator. Equivalent products include the LM1117-1.8 from Texas Instruments, LD1117-1.8 from STMicroelectronics, NCP1117-1.8 from ON Semiconductor, and the MIC39100-1.8 from Microchip Technology. These alternatives offer similar specifications in terms of output voltage, current capacity, and dropout voltage, making them suitable substitutes in most applications requiring a 1.8V linear regulator.

Features

The AMS1117-1.8 is a low dropout voltage regulator designed for a variety of applications requiring a stable 1.8V output. Key features include:
1. Output Voltage: Fixed at 1.8V.
2. Dropout Voltage: Typically about 1.1V at full load of 800mA, which is low compared to many other regulators.
3. Current Capability: Can source up to 1A output current with proper heat dissipation.
4. Quiescent Current: Low quiescent current, ensuring efficient operation.
5. Thermal Protection: Comes with built-in thermal overload protection to prevent damage from excessive heat.
6. Overcurrent Protection: Safeguards against short circuits and overcurrent conditions.
7. Temperature Range: Typically operates within a range of -40°C to +125°C.
8. Package Options: Available in various packages like SOT-223, TO-252, etc., for different applications.
9. Stability: Requires only a few external components to maintain output stability.
These features make the AMS1117-1.8 suitable for use in battery-powered devices, microcontroller systems, and other applications needing a steady 1.8V power supply.

Pinout

The AMS1117-1.8 is a fixed output voltage linear voltage regulator with a pin count of three. The pins are typically configured as follows:
1. Pin 1 (Adjust/Ground):
- For the fixed output version like the AMS1117-1.8, this pin is connected to ground.

2. Pin 2 (Output):
- This pin provides the regulated 1.8V output voltage.
3. Pin 3 (Input):
- This pin is connected to the input voltage, which should be higher than the desired 1.8V output and within the specified input range for optimal performance.
The AMS1117 series, including the 1.8V variant, is used for providing a stable 1.8V output from a higher input voltage in various electronic applications, ensuring low dropout and providing a consistent power supply to components requiring a 1.8V input.

Manufacturer

The AMS1117-1.8 is manufactured by Advanced Monolithic Systems (AMS), a company specializing in the design and production of analog semiconductor devices. AMS focuses on providing high-performance power management solutions and analog ICs that are used in a variety of applications, including computing, communications, and consumer electronics. The AMS1117 series is particularly known for being a low-dropout linear voltage regulator, commonly utilized in electronic circuits that require stable voltage regulation.

Application

The AMS1117-1.8 is a low-dropout (LDO) voltage regulator that provides a fixed output of 1.8V. Its primary application areas include:
1. Microcontroller Power Supply: Providing a stable 1.8V supply for microcontrollers and digital ICs.
2. Consumer Electronics: Used in devices like smartphones, tablets, and cameras for power management.
3. Networking Equipment: Powers components in routers, switches, and modems.
4. Embedded Systems: Supplies power in various embedded systems and IoT devices.
5. Communication Devices: Supports a stable voltage for communication interfaces and modules.
Its low dropout voltage and high precision make it suitable for battery-powered and portable applications.

Package

The AMS1117-1.8 is typically available in a SOT-223 package. This package is a surface-mount design, suitable for compact electronic circuits and provides efficient thermal management for the low dropout voltage regulator.

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