MC33164D-3R2

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The MC33164D-3R2 is a power management integrated circuit (PMIC), specifically a supervisor, produced on a double-metal CMOS process by Freescale Semiconductor. It is typically used in applications where a wearable device, medical device, or any other form of embedded device needs to be powered. This PMIC controls the various voltage levels for the ICs and peripheral components of the device, thus preventing a system malfunction due to over-power or too high a voltage. It is also used in Lithium Ion Battery charge-control systems.

The MC33164D-3R2 supervisor has two main functions, a reset controller and a battery charger. Its reset controller function is designed to provide a stable, accurate and very fast (1-3ms) reset signal to the system. The reset signal appears when the supply voltage crosses a defined trip point or a short-circuit condition is detected in the power supply circuitry. The battery charger features its own charge current, charge voltage and temperature control, allowing for Li-Ion battery charging devices that can be used in various battery types and for different application scenarios.

The MC33164D-3R2 supervisor detects and controls five voltages on the system, VDD, VDDQ, VDDL, VDDQS, and VDDQS2. The supervisor monitors these voltages for any voltage drops due to over-current or excess heat, and if a voltage drop is detected, it sends out a reset signal to the system to shut down immediately and avoid any damage to the components. It also sends an alert to the system that an abnormality has occurred, so the system can take preventive measures as applicable.

The supervisor also has an in-built power-on reset (POR) feature, which prevents electrical transients on the system when the power is turned on. It monitors and assesses the power flows on the system, which can be triggered by an external source or due to the system itself, and if an excessive amount of current is detected, the POR shuts off the circuit, thus protecting the system from over voltage and over current.

The MC33164D-3R2 supervisor can also provide a temperature monitoring feature. It has a temperature sensing channel that detects any temperature increase on the system, so if too high a temperature is detected, it can trigger a reset signal and shut off the system before any damage is done to the components. It can also be set up to send an alert to the system when a particular temperature threshold has been crossed.

The MC33164D-3R2 applies to any device where a battery charger and reset controller are needed, such as smartphones, tablets, home appliances, consumer electronics, and automotive applications, allowing for a powerful way to manage power on the system and keep the components safe from overheating, excessive current, and other power-related problems.

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