PS8A0016PE

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PS8A0016PE Application Field and Working Principle

Power management integrated circuits (PMIC) are essential components in modern electronic systems and the PS8A0016PE is a specialized PMIC designed for applications in low power devices. It provides a range of power pins for application in various different voltage domains, with an operating voltage range of 0.9V to 3.6V.

Overview and Features

The PS8A0016PE is a voltage-mode step-down DC-DC Buck converter and belongs to the Sharp family of voltage-mode pulse width modulation (PWM) hybrid integrated circuits. It is a specialized PMIC that offers a range of features.

The PS8A0016PE is available in a miniature surface mount (MSOP) package and offers a range of functions including Power Good (PG) output, power shutdown and light load mode detection. Unique features include Over-Temperature protection (OTP) for temperature protection, a 2.5V voltage reference as well as on-chip current sensing circuit.

Application Field

The PS8A0016PE is ideal for applications in low power wireless devices such as wireless sensors and medical equipment. It provides an on-off control of devices with up to 20mA of output current and is suitable for applications that require low voltage, low power and stable performance.

The low quiescent current of the PS8A0016PE also allows it to be used in consumer products such as cell phones, portable game consoles, camera modules, and Voice over IP (VoIP) devices.

Working Principles

The PS8A0016PE uses a voltage-mode step-down DC-DC buck converter with a PWM control to efficiently convert and regulate the voltage output. It is powered by an input voltage ranging from 0.9V to 3.6V, and the output voltage is configured by setting the external resistor divider network.

The PS8A0016PE has a very low quiescent current of just 1.2uA, which in turn results in low power dissipation and stable operation. The device has an on-chip sensing resistor which provides improved accuracy of the output voltage and current, as well as improved line and load regulation.

The PS8A0016PE has an on-off control input which allows the device to be turned on or off as needed. The device also includes an Over-Temperature protection (OTP) circuit which will protect the device from overheating. The OTP circuit is triggered when the junction temperature reaches the specified limit set by the OTP circuitry.

The PS8A0016PE also has an internal 2.5V voltage reference for improved accuracy of the output voltage and current. The device also has a power good (PG) output which indicates whether the output voltage is within an acceptable range. The device is designed with a soft-start circuit which reduces the inrush current and improves start-up performance. In addition, the device is also designed with a light load mode detection circuit which detects a low load condition and switches to low-current region to save power.

Conclusion

The PS8A0016PE is a specialized power management integrated circuit (PMIC) designed for applications in low power electronic systems. It is available in a miniature surface mount (MSOP) package and features an operating voltage range of 0.9V to 3.6V. It offers an output current up to 20mA as well as a variety of features such as Over-Temperature protection (OTP) and a 2.5V voltage reference. It can be used for applications in low power wireless devices such as wireless sensors, medical equipment, and consumer products such as cell phones and portable gaming consoles.

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