LT4320HDD-1#TRPBF

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The LT4320HDD-1#TRPBF is a PMIC – OR Controllers, Ideal Diodes designed for low-voltage battery- or USB-powered applications. It integrates a precise measure of charge current, a high-efficiency OR controller, and an ideal diode controller. With its low headroom, the device can monitor current as small as 5µA with an input voltage between 0.18V and 5.5V.

The LT4320HDD-1#TRPBF OR controller protects the battery by keeping it above its minimum operating voltage. When enabled, the diode controller enables a reverse current path when the voltage on the OUT pin exceeds the voltage on the IN pin, while still allowing forward currents over a wide voltage range, providing a much lower forward voltage drop than is possible with a PNP junction.

The application fields of the LT4320HDD-1#TRPBF include battery management in smartphone and tablet applications, as well as automotive, industrial, and etc. Because of its precision and efficiency, the LT4320HDD-1#TRPBF can provide significant power and cost savings for these applications.

The LT4320HDD-1#TRPBF working principle is based on two integrated functions. First, the OR gate monitors the battery voltage when it goes below the minimum-voltage threshold. When the voltage reaches the threshold, the OR gate is triggered, redirecting the incoming current to a low-resistance path. This blocks the current from reaching the battery and protects it.

Second, when the OR gate is closed (low voltage), the ideal diode controller will also activate and enable a steep reverse-current path. This configuration reduces the forward voltage drop on reverse current significantly, providing an efficient reverse charge path that doesn’t require a PNP junction.

The LT4320HDD-1#TRPBF is ideal for use in situations where a high degree of precision and efficiency is required. It can help protect a battery from over-discharge, increase the efficiency of an overall power supply system, and reduce the size and cost of the system. Furthermore, since the LT4320HDD-1#TRPBF has a wide input voltage range and a low-voltage drop on forward currents, it is suitable for both battery-based and USB-based power systems.

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