AZ1117T-3.3E1

Current - Output:	1A
Base Part Number:	AZ1117
Supplier Device Package:	TO-220-3
Package / Case:	TO-220-3
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TJ)
Protection Features:	Thermal Shutdown
Control Features:	--
PSRR:	75dB (120Hz)
Current - Quiescent (Iq):	10mA
Series:	AZ1117
Voltage Dropout (Max):	1.25V @ 1A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	15V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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AZ1117T-3.3E1 Application Field and Working Principle

Introduction

AZ1117T-3.3E1 is a low dropout (LDO) regulator that provides precise regulation at 3.3V with 1A of output current. It has low power dissipation, low noise and fast transient response, making it suitable for various applications, including mobile devices and digital systems.The AZ1117T-3.3E1 is a two-terminal PMIC (power management IC) voltage regulator that uses a combination of feedback and load sensing circuitry to maintain an output voltage of 3.3V with a load current of up to 1A. The device also provides temperature compensation, enabling stable output voltage operation over a wide temperature range.

Application Field

The AZ1117T-3.3E1 is ideally suited for use in low-power, low-voltage applications such as mobile phones and other portable electronic devices, as well as household appliances, A/V and automotive applications. The LDO regulator is also ideal for powering components requiring precise, low noise and low current levels, such as amplifiers, D/A converters, microcontrollers and low frequency clocks. The low dropout voltage, transient response time and low noise characteristic of the AZ1117T-3.3E1 makes it an ideal choice for powering small portable electronic devices, such as handheld games and PDAs, or for powering microcontrollers and D/A converters in audio and video applications.

Working Principle

The AZ1117T-3.3E1 is a low dropout (LDO) regulator, meaning it maintains a precise output voltage with minimal input voltage variation. Inside the AZ1117T-3.3E1, a voltage reference, error amplifier and a pass element form the core of the LDO regulation. The voltage reference provides the accuracy while the error amplifier compares the output voltage to the reference voltage, making control decisions and adjusting the pass element accordingly. The pass element is the main component of the device and is responsible for controlling the device\'s current and output voltage. The AZ1117T-3.3E1 provides temperature compensation to ensure stable output voltage operation over a wide temperature range. It is capable of providing up to 1A of output current with a typical dropout voltage of 200mV. The device has a very low noise characteristic and can respond quickly to transient load changes due to its fast response time.

Conclusion

The AZ1117T-3.3E1 Low Dropout Regulator is a two-terminal PMIC (power management IC) voltage regulator that uses a combination of feedback and load sensing circuitry to maintain an output voltage of 3.3V with a load current of up to 1A. Its low power dissipation, low noise and fast transient response make it suitable for a variety of low-power, low-voltage applications, such as mobile phones, handheld games, PDAs, household appliances and automotive applications. The device has a very low dropout voltage and can respond quickly to transient load changes.

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