ADP124ARHZ-2.85-R7

Current - Output:	500mA
Base Part Number:	ADP124
Supplier Device Package:	8-MSOP-EP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Control Features:	Enable
PSRR:	60dB (10kHz ~ 100kHz)
Current - Supply (Max):	280µA
Current - Quiescent (Iq):	105µA
Series:	--
Voltage Dropout (Max):	0.23V @ 500mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.85V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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ADP124ARHZ-2.85-R7 application field and working principle

ADP124ARHZ-2.85-R7 is a 3.3V linear voltage regulator from Analog Devices. It is a low-dropout (LDO) linear regulator with a maximum dropout voltage of 250mV, low quiescent current, low output noise, thermal overload protection, and reverse battery protection. The ADP124ARHZ-2.85-R7 is designed to provide 3.3V ±2% output voltage accuracy over line, load, and temperature variations. The ADP124ARHZ-2.85-R7 is easy to configure and requires only a single external resistor to set the output voltage. It is specified with an adjustable range of 1.2V to 3.6V, with a maximum load current of 500mA, and with an output accuracy of ±2%. The device is also available with 2.5V, 2.85V, and 3.3V fixed output voltage options.The ADP124ARHZ-2.85-R7 is well suited for powering digital circuitry, RF transceivers, converters, and other integrated circuits and systems in a wide range of commercial and industrial applications. It is particularly useful in applications that require long battery life, low power consumption, and low noise. It is packaged in a small and easy-to-use SOT-23 package, making it ideal for space-restricted applications.

Working Principle

The ADP124ARHZ-2.85-R7 is an efficient low dropout linear voltage regulator which maintains a constant voltage output through the use of an N-type MOSFET pass switch. The regulator is supplied with an input voltage of up to 6.5 V and provides a regulated output voltage of 2.85 V ±2% over line, load and temperature variations. The output current can be regulated up to 500 mA. The voltage regulation is achieved by controlling the gate voltage of an internally connected N-type MOSFET switch. An output voltage divider network adjusts the gate voltage to the required level. The output is maintained at a constant voltage while the voltage and current drawn from the input is large enough to support the desired output. To maintain a low noise output, an internal low noise bias current is used to maintain the MOSFET turn-on resistance. An internal thermal monitor will shut down the device if the junction temperature exceeds the maximum allowable temperature. The device is designed to operate at low power consumption with an operating temperature range of -40°C to +125°C.

Conclusion

The ADP124ARHZ-2.85-R7 is a cost-effective, low-dropout, low-noise, 3.3V linear voltage regulator from Analog Devices. It is well suited for powering digital circuitry, RF transceivers, converters, and other integrated circuits and systems in a wide range of applications. With an adjustable range of 1.2V to 3.6V, a maximum load of 500 mA, and an output accuracy of ±2%, the ADP124ARHZ-2.85-R7 is the perfect solution for power sensitive applications requiring a low-noise and low-power solution.

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