Description:The PA75 is a single chip, dual power operational amplifier capable of 2.5A of continuous output current on 5V to 40V single supplies. The IC design of the PA75 utilizes a dual power amplifier on a single monolithic die. Side B of the chip is configured as a unity gain buffer to increase the current capability of the side A “master”. Two PA75 amplifiers can be used to provide a cost effective solution for applications where multiple amplifiers are required or a bridge configuration is needed. Very low harmo
Apex Microtechnology recommends a 2-layer or 4-layer PCB with a thermal relief pattern on the bottom layer to ensure good heat dissipation. A minimum of 2 oz copper thickness is recommended for the top and bottom layers.
To ensure reliable operation at high temperatures, Apex recommends derating the output current and voltage according to the thermal derating curve provided in the datasheet. Additionally, ensure good airflow and thermal management around the device.
Apex recommends using a low-ESR ceramic capacitor (e.g., X5R or X7R) with a value of 10-22 μF for the input capacitor. This helps to filter out high-frequency noise and ensure stable operation.
Apex recommends using external overvoltage protection (OVP) and overcurrent protection (OCP) circuits to prevent damage to the device. The OVP circuit should be set to trigger at 1.5-2 times the maximum rated voltage, and the OCP circuit should be set to trigger at 1.5-2 times the maximum rated current.
Apex recommends a soft-start sequence to prevent inrush currents and ensure reliable startup. The recommended sequence is: 1) Apply input voltage, 2) Wait for the internal undervoltage lockout (UVLO) to release, and 3) Apply the enable signal.
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PA75CX Overview
Use the download button to access the PA75CX 3D model. You can still request or build the schematic symbol and PCB footprint by using the respective build or request forms on this page.
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