UC2902D

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UC2902D integrated circuit is an example of modern power management IC technology. It is a member of the PMIC - Power Management - Specialized family. It offers both high efficiency and a low standby power consumption.

Designing for power sensitive applications is a challenge. Along with meeting current and performance needs, the power must be managed optimally in every application. The UC2902D integrated circuit from Infineon has been designed to meet this challenge. It features a low input voltage range and high power efficiency.

At its heart, the UC2902D is a control and monitoring circuit. It can be used for a number of applications including battery chargers, switching power supplies and more. The UC2902D integrates an advanced power management system which includes a low dropout regulator, over-voltage and over-current protection, thermal regulation and an output voltage monitor.

The UC2902D is particularly well suited for battery charging applications. It integrates a buck regulator and a charge control circuit in one package. The switching frequency is programmable; the voltage and current limits are adjustable, and a charge output current is maintained with a full 95% efficiency for a wide range of battery types.

The UC2902D has a VIN range of 4V to 36V and can be set to supply up to 5A. It operates up to a maximum frequency of 3MHz and includes an adjustable over-voltage protection circuit, which can be highly useful in battery charging applications. Additionally, it integrates a low standby current consumption in order to reduce power losses while in Idle state.

Furthermore, the UC2902D has a programmable under-voltage lockout. This feature allows the integrated circuit to protect the battery from over-discharging, as well as detect if the battery voltage drops below a certain level. The protection circuit is programmable via an external resistor and the output voltage can be monitored with a power-on reset.

In terms of thermal protection, the UC2902D integrates a temperature monitor circuit. This circuit can detect temperature levels higher than the selected ones, and put the output in a safe mode. The integrated circuit will then enter a low power state for safety, and can be reset after the heat dissipates.

Lastly, the UC2902D contains a high-side driver, which is needed for high power applications. This enables the integrated circuit to control devices directly from the integrated circuit, eliminating the need for an extra external switch. This feature also simplifies the overall design.

In summary, the Infineon UC2902D is a state-of-the-art power management IC. It combines switching performance, high and low voltage protection, and temperature mapping into a single integrated circuit. With such versatile features and robust performance, the UC2902D is an ideal solution for power sensitive applications.

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