S-8520B18MC-ARDT2G

Voltage - Supply (Vcc/Vdd):	2.5 V ~ 16 V
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	100%
Frequency - Switching:	180kHz
Series:	--
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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The S-8520B18MC-ARDT2G is a DC/DC switching regulator control IC designed for low power applications. It combines a low power mode with a high accuracy current protection circuit, making it suitable for portable and battery powered products. This DC/DC switching regulator is composed of two parts—an integrated buck converter controller, which utilizes the latest synchronous rectification and has a wide input voltage range from 2.9V up to 6V, and an integrated MOSFET driver circuit, which enables a high current drive circuit suitable for low power applications. Input/Output CharacteristicsThe S-8520B18MC-ARDT2G has one input and two outputs. The input voltage range is between 2.9V and 6V, and the output voltage can be adjusted by an external resistor. The output current is adjustable up to 1A with a voltage drop of 0.5V. The S-8520B18MC-ARDT2G is designed to be used in either continuous or pulse width modulation (PWM) modes. In continuous mode, the voltage at the output is kept constant and is unaffected by the load fluctuations. In PWM mode, the output voltage is regulated by continuously cycling theload current on and off to maintain a constant output voltage. Working PrincipleThe S-8520B18MC-ARDT2G is a buck converter control IC composed of an integrated buck converter controller and an integrated MOSFET driver circuit. The buck converter controller has a wide input voltage range from 2.9V up to 6V, and is capable of providing up to 1A with a voltage drop of 0.5V. The integrated MOSFET driver circuit allows for a high current drive circuit suitable for low power applications. It uses synchronous rectification to decrease the power dissipation of the MOSFET driver and increase efficiency.The S-8520B18MC-ARDT2G works on the principle of feedback control. The feedback control works by detecting the output voltage of the converter and adjusting the conduction time of the MOSFET driver until the output voltage is stable and optimal.Current Protection CircuitThe S-8520B18MC-ARDT2G has a high accuracy current protection circuit which is used to limit the output current of the converter and thus prevent damage to the converter due to excessive current. It uses a circuit that expects the over current protection voltage to be fixed and without hysteresis. ApplicationsThe S-8520B18MC-ARDT2G is suitable for low power applications such as cell phones, portable electronics, and battery powered products. It can be used in both continuous and PWM mode, allowing for an efficient and precise control of the output voltage. It is also designed with a high accuracy current protection circuit, making it suitable for battery powered products. In conclusion, the S-8520B18MC-ARDT2G is a DC/DC switching regulator control IC that is suitable for low power applications. It has a wide input voltage range and is capable of providing up to 1A with a voltage drop of 0.5V. It has a high accuracy current protection circuit which is used to limit the output current with little hysteresis. The S-8520B18MC-ARDT2G can be used in both continuous and PWM mode, allowing for an efficient and precise control of the output voltage and making it suitable for cell phones, portable electronics, and battery powered products.

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