ISL62882CHRTZ

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What is ISL62882CHRTZ?

ISL62882CHRTZ is a two-channel buck regulator, which is a type of power management integrated circuit (PMIC) dedicated to enabling efficient power conversion, providing the clean and regulated voltages required by many types of devices.

Application Field of ISL62882CHRTZ

This type of PMIC is ideal for powering audio-video products and other portable power management applications, including mobile battery charging, portable media players, and digital still cameras. It features dual adaptive-frequency synchronous buck controllers, which allow for high efficiency across the entire load range. In addition, the ISL62882CHRTZ supports a wide operating input voltage range from 2.5V to 16V with an output voltage range from 0.5V to 5.5V with no external components needed for the voltage switching.

The small size of the ISL62882CHRTZ makes it ideal for space-constrained applications. It is offered in a 10-pin WLCSP package that measures just 3mm x 3mm, which makes it well suited for highly compact portable product designs. The device also integrates robust protection functions such as cycle-by-cycle current limit and short-circuit protection that can withstand harsh operating conditions. The short-circuit protection prevents voltage spikes during sudden stalls or short circuits, and the overtemperature protection shuts-down the device when temperatures exceed safe limits.

Working Principle of ISL62882CHRTZ

The ISL62882CHRTZ features a dual adaptive-frequency synchronous buck converter operating at peak efficiency across the entire load range. This enables dual output voltage (VOUT1 and VOUT2) with standard output current values up to 1.2A. The controller adjusts the switching frequency based on the output load regulation characteristics, providing a smooth transition between the two switching frequencies. Internal voltage feedback ensures that the output voltage is within the specified tolerance range even when the external load changes significantly.

The architecture used in the ISL62882CHRTZ enables the device to operate with minimum input current when the load current is low. This is extremely beneficial in applications where the device operates from a battery, as it increases efficiency and reduces power consumption. Furthermore, the wide switching frequency range of 300kHz to 2.2MHz enables fast transient responses.

The ISL62882CHRTZ’s low quiescent current (IQ) of less than 5mA ensures low power dissipation and reduced heat generation. In addition, the device includes programmable features such as phase-shedding and spread spectrum, which allow it to meet the strictest EMI requirements for applications with stringent EMI regulations.

Overall, the ISL62882CHRTZ is an excellent choice for applications requiring dual-output power conversion, an extended input voltage range, high-efficiency operation, and a wide operating temperature range.

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