Description:The ISL97649AR5566 is an Integrated Power Management IC (PMIC) for TFT-LCDs used in notebooks, tablet PCs and monitors. The device integrates a boost converter for generating AVDD, an LDO for VLOGIC. VON and VOFF are generated by a charge pump driven by the switch node of the boost. The ISL97649AR5566 also includes a VON slice circuit, reset function and a high performance VCOM amplifier with DCP (Digitally Controlled Potentiometer) that is used as a VCOM calibrator. The AVDD boost converter features a 1. 5
Renesas provides a recommended PCB layout in the application note AN1995, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
The input capacitor selection depends on the input voltage, output voltage, and output current. Renesas recommends using a low-ESR capacitor with a value between 10uF to 22uF, and a voltage rating of at least 1.5 times the input voltage. The application note AN1995 provides more detailed guidance on input capacitor selection.
The maximum ambient temperature for the ISL97649AIRZ-TR5566 is 85°C, but it can be derated to 70°C for high-reliability applications. It's essential to consider the thermal design and heat sinking to ensure the device operates within the recommended temperature range.
Yes, the ISL97649AIRZ-TR5566 is designed to withstand vibrations up to 10G peak acceleration, making it suitable for applications in harsh environments. However, it's crucial to ensure proper PCB mounting and component attachment to prevent mechanical stress and damage.
Renesas provides a troubleshooting guide in the application note AN1995, which covers common issues such as output voltage deviation, oscillation, and overvoltage protection. It's essential to follow the recommended debugging steps and check the input voltage, output load, and PCB layout to identify the root cause of the issue.
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ISL97649AIRZ-TR5566 Overview
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