Description:Support is limited to customers who have already adopted these products.The ISL9220, ISL9220A is a cost-effective and versatile battery charger for 1-cell and 2-cell Li-ion and Li-Polymer based portable applications. The device features synchronous PWM technology, maximizing power efficiency, thus minimizing charge time and heat. The 1. 2MHz switching frequency allows use of small external inductors and capacitors. A simple charge current programming method is provided. External resistors program the fast c
A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output capacitors close to the IC, and use short, wide traces for the power paths. Avoid routing sensitive analog signals near the switching nodes.
The compensation network consists of RCOMP, CCOMP, and LCOMP. Start with the recommended values in the datasheet, then adjust RCOMP to achieve a stable output voltage. Use a network analyzer or a Bode plot to verify the loop stability.
The ISL9220AIRTZ-T can handle input voltages up to 28V, but the recommended maximum input voltage is 24V to ensure reliable operation and minimize stress on the internal components.
Use a thermal pad or a heat sink to dissipate heat. Ensure good airflow around the IC, and avoid blocking the airflow with nearby components. Monitor the junction temperature (TJ) and adjust the design as needed to keep TJ below 125°C.
Yes, the ISL9220AIRTZ-T is AEC-Q100 qualified and suitable for automotive and high-reliability applications. However, ensure that your design meets the specific requirements of your application, including temperature range, vibration, and EMI immunity.
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ISL9220AIRTZ-T Overview
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