AZ809ANRTR-G1

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Power management integrated circuits (PMICs) are circuits that control and regulate peripheral operations of electronic devices. PMICs are used to meet the electronic system power needs and reduce power dissipation. They are especially useful in portable electronic devices where power is precious and needs to be managed in order to maximize battery life. PMICs are divided into several categories, including voltage regulators, switching voltage regulators, protected switching voltage regulators, supervisors, and battery charge controllers. This article focuses on the AZ809ANRTR-G1 supervisor IC, which is an integrated circuit (IC) and belongs to the supervisors category.

The AZ809ANRTR-G1 is a supervisor with reliability and fast response features, designed for use in voltage/temperature monitoring, microsystem power supply reset, power-on reset, and precision isochronous reset. It is a low power consumption IC suitable for battery powered applications. The IC has a fast response time due to its active discharge and small RC circuit, achieving maximum operating frequencies of 10MHz. Besides fast response, this IC also offers low supply current (<2μA).

The AZ809ANRTR-G1 supervisor supports three kinds of applications, namely reset circuit, reference voltage output for A/D conversion, and voltage comparison for a threshold voltage. The reset circuit application includes manual reset, power-on reset, and overvoltage reset. For manual reset and power-on reset, the reset output will provide a low reset signal delay after the manual reset or power-on reset signal that is asserted. For overvoltage reset, the reset circuit will be activated when the monitored voltage exceeds the pre-set threshold voltage.

The reference voltage output for A/D conversion provides a reference voltage for the analog to digital converter. This voltage is a little over 3V, depending on the specific application. The reference voltage output for A/D conversion sets a low temperature dependent voltage shift, which helps system to gain accuracy when detecting low temperature changes.

The voltage comparison for a threshold voltage application allows AZ809ANRTR-G1 to compare between two different voltage values and output a compare signal before the voltage exceeds the pre-set threshold voltage, which is important to detect any sudden voltage drop.

The AZ809ANRTR-G1 supervisor is available in several packages including 8-pin SOIC, 8-pin TSSOP, 6-pin WLP, 6-pin WQFN, and 6-pin UQFN. It supports a wide operating temperature range from -40°C to +85°C and operates between 1.65V and 5.5V input voltage. The on-chip voltage-ready terminal ensures fast and accurate response. The reset output can be asserted by utilizing input logic from the MCU, reset switch, or various types of events like power failure or high/low voltage.

The AZ809ANRTR-G1 supervisor is an ideal choice for applications such as portable devices, notebook computer, car audio, automotive systems, digital cameras, graphic cards, power supplies, data processing systems, industrial controllers, and communication systems. Its low current consumption, wide operating temperature range, and excellent voltage monitoring performance makes it well suited for many applications.

In summary, the AZ809ANRTR-G1 supervisor IC is well suited for a wide range of applications such as portable devices, automotive systems, digital cameras, and communication systems. It is a reliable and fast response IC with low power consumption, wide operating temperature range, and high accuracy voltage monitoring capability. This makes it an ideal choice for projects that require accurate voltage monitoring and reliable power supply reset.

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