Description:The ISL6298 is an integrated single-cell Li-ion or Li-polymer battery charger optimized for low current applications. The targeted applications include mini-disk (MD) players, Bluetooth® headsets, or other applications that use low-capacity battery cells. The ISL6298 is a linear charger that charges the battery in a CC/CV (constant current/constant voltage) profile. The charge current is programmable with an external resistor up to 450mA during the CC phase. Once the battery voltage reaches 4.2V (or 4.1V),
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 ISL6298-2CR4Z has a power-on reset (POR) circuit that ensures the device is properly reset during power-up. Additionally, the device has a configuration pin (CFG) that can be used to select the desired configuration during startup. Refer to the datasheet for specific guidelines on power-up sequencing and configuration pin settings.
While the datasheet specifies the maximum input voltage rating, the allowed input voltage ripple is not explicitly stated. As a general guideline, Renesas recommends keeping the input voltage ripple below 1% of the nominal input voltage to ensure reliable operation and minimize the risk of voltage regulator dropout.
Yes, the ISL6298-2CR4Z is rated for operation up to 125°C. However, the device's power dissipation and output current capability may need to be derated at higher temperatures. Refer to the datasheet's thermal derating curves and power dissipation calculations to ensure reliable operation in high-temperature environments.
Renesas provides a troubleshooting guide in the application note AN1996, which covers common issues and debugging techniques for the ISL6298-2CR4Z. Additionally, the datasheet provides detailed information on the device's internal voltage regulation and current limiting circuits, which can aid in troubleshooting and fault analysis.
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ISL6298-2CR4Z Overview
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