AZ1117CH-ADJTRG1

Operating Temperature:	-20°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	TO-261-4, TO-261AA
Supplier Device Package:	SOT-223
Series:	AZ1117C
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Configuration:	Positive
Output Type:	Adjustable
Number of Regulators:	1
Voltage - Input (Max):	15V
Voltage - Output (Min/Fixed):	1.25V
Voltage - Output (Max):	13.7V
Voltage Dropout (Max):	1.3V @ 800mA
Current - Output:	800mA
PSRR:	70dB (120Hz)
Control Features:	--
Protection Features:	Thermal Shutdown

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IntroductionThe AZ1117CH-ADJTRG1 is a low dropout (LDO) linear voltage regulator that is used to provide steady voltage to various electrical and electronic components in a wide range of applications. It is a part of a family of low-dropout voltage regulators that offers a wide range of input and output voltages, with output currents up to 1A and low power dissipation. The AZ1117CH-ADJTRG1 is an adjustable device with an output that can be set from 2.5V to 6V by means of an external resistor divider or an external reference voltage. In addition, the device is available in an ultra-small 8-Lead UDFN (3x3mm) package, and offers high efficiency and low noise performance, making it an ideal solution for space-constrained portable applications.Application FieldsThe AZ1117CH-ADJTRG1 is ideal for portable applications such as cellular phones, digital cameras, and PDAs, where low quiescent current and high precision output is desirable. The low drop-out (LDO) design allows the regulator to maintain output stability with input voltages as low as 2.2V. In addition, the device features an adjustable output voltage range from 2.5V to 6V, which can be set by an external resistor divider or an external reference voltage, providing a wide range of application flexibility.Operating PrinciplesThe AZ1117CH-ADJTRG1 works by using an amplifier and a feedback loop to maintain a stable output voltage by constantly comparing the output voltage to a reference voltage. It works in three stages. Firstly, the input voltage is regulated using a high efficiency P-channel power MOSFET. Secondly, the output voltage is regulated using a voltage reference and an error amplifier. Finally, the load is regulated by the output of the error amplifier and an adjustable resistor divider. In order to adjust the output voltage, the resistor divider needs to be set to the desired voltage.FeaturesThe AZ1117CH-ADJTRG1 offers many features that make it an ideal choice for many applications. It has a wide input voltage range of 2.2V to 6.5V, an adjustable output voltage range of 2.5V to 6V and low quiescent current of 25uA. In addition, the device features extremely tight line and load regulation of ±0.05%, and output voltage temperature coefficient of only ±0.2mV/°C. Furthermore, the device offers very fast transient response and has a very low dropout voltage (typically only 260mV at 1A). It also has excellent power efficiency, as well as both over-temperature and over-current protection features.ConclusionThe AZ1117CH-ADJTRG1 is a low-dropout (LDO) linear voltage regulator that provides precise and stable voltage to numerous electrical and electronic components in a wide range of applications. It is available in an ultra-small 8-Lead UDFN (3x3mm) package, offering high efficiency and low noise performance, making it an ideal solution for space-constrained portable applications. The device offers a wide range of features such as a wide input voltage range, adjustable output voltage range, low quiescent current, extremely tight line and load regulation, fast transient response and excellent power efficiency. In addition, it has both over-temperature and over-current protection features.

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