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AMS1117 Voltage Regulator IC ADJ

SKU: T31VXQ8RHM
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4.3 (38 reviews)
The AMS1117-ADJ is a low dropout (LDO) adjustable voltage regulator IC designed to provide a stable and adjustable output voltage for a wide range of electronic applications. Unlike fixed-voltage versions, the AMS1117-ADJ allows users to set the desired output voltage using two external resistors, making it highly versatile for custom power supply designs. It is capable of delivering up to...
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The AMS1117-ADJ is a low dropout (LDO) adjustable voltage regulator IC designed to provide a stable and adjustable output voltage for a wide range of electronic applications. Unlike fixed-voltage versions, the AMS1117-ADJ allows users to set the desired output voltage using two external resistors, making it highly versatile for custom power supply designs. It is capable of delivering up to 800mA to 1A output current depending on operating conditions and manufacturer specifications.

Featuring low dropout voltage, excellent line regulation, and built-in protection mechanisms, the AMS1117-ADJ is commonly used in embedded systems, microcontroller circuits, communication modules, battery-powered devices, and voltage regulation modules. Its compact SOT-223 package offers efficient heat dissipation while maintaining a small footprint for PCB designs.

Key Features

  • Adjustable output voltage from 1.25V to 12V
  • Low Dropout (LDO) regulator design
  • Output current up to 800mA–1A
  • Low dropout voltage (typically 1.1V–1.3V)
  • Built-in thermal overload protection
  • Internal current limiting protection
  • Excellent line and load regulation
  • Suitable for battery-powered applications
  • Requires minimal external components
  • High output voltage accuracy
  • Compact SOT-223 package
  • Ideal for custom voltage regulator circuits and embedded systems
  • Adjustable output using external resistor divider network
  • Reliable and stable operation for sensitive electronics

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Specifications

Specifications:

IC Type: Adjustable Low Dropout (LDO) Voltage Regulator
Model: AMS1117-ADJ
Package Type: SOT-223
Number of Pins: 3
Output Voltage Range: 1.25V to 12V Adjustable
Reference Voltage: 1.25V Typical
Output Current: Up to 800mA–1A
Input Voltage Range: 4.5V to 15V DC
Maximum Input Voltage: 15V DC
Dropout Voltage: Typically 1.1V, Maximum 1.3V
Line Regulation: Typically 0.2%
Load Regulation: Typically 0.4%
Quiescent Current: Typically 5mA–10mA
Ripple Rejection: Up to 75dB
Protection Features: Thermal Shutdown, Current Limiting
Operating Temperature: -40°C to +125°C
Storage Temperature: -65°C to +150°C
Mounting Type: Surface Mount (SMD)

Additional Resources

AMS1117.PDF

FAQ

1. What is the AMS1117-ADJ Voltage Regulator used for?

The AMS1117-ADJ is used to create adjustable voltage power supplies for microcontrollers, sensors, communication modules, embedded systems, and electronic projects requiring custom output voltages.

2. What output voltage range does the AMS1117-ADJ support?

The regulator provides an adjustable output voltage ranging from approximately 1.25V to 12V, depending on the external resistor configuration and input voltage.

3. How much current can the AMS1117-ADJ deliver?

The AMS1117-ADJ can supply up to 800mA to 1A output current when properly cooled and operated within specifications.

4. How is the output voltage adjusted in the AMS1117-ADJ?

The output voltage is set using two external resistors connected to the ADJ pin, allowing users to configure the desired regulated output voltage.

5. Does the AMS1117-ADJ include built-in protection features?

Yes, the AMS1117-ADJ includes thermal shutdown and current limiting protection to safeguard the regulator and connected circuits from excessive temperature and overload conditions.

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