Description:The ISL6292B uses dual-mode charge technology to minimize the heat in a linear charger. The ISL6292B is a modification of the original ISL6292 and is optimized for cellular phone travel charger applications. The low-heat generation feature of the dual-mode charger enables the charger IC to be placed inside the connector of the travel charger to completely remove the influence of the adapter cable on the charging performance. Working with a current-limited ac/dc converter, the dualmode charger charges a Li-i
Renesas provides a recommended PCB layout in their application note AN1443, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
The selection of input and output capacitors depends on the specific application requirements, such as ripple current, voltage rating, and ESR. Renesas recommends using capacitors with low ESR and high ripple current capability, such as ceramic or polymer capacitors. A detailed capacitor selection guide is provided in the ISL6292 datasheet.
According to Renesas, the maximum allowed voltage deviation on the input voltage pin (VIN) during startup is ±10% of the nominal input voltage. Exceeding this limit may affect the device's startup behavior or even prevent it from starting up properly.
The ISL6292BCRZ-T has a built-in overcurrent protection feature that can be enabled by connecting a resistor (R_OCP) between the OCP pin and GND. The value of R_OCP determines the overcurrent threshold. Renesas provides a detailed OCP implementation guide in their application note AN1443.
The recommended operating temperature range for the ISL6292BCRZ-T is -40°C to +85°C. However, the device can operate up to +105°C with derated specifications. It's essential to ensure proper thermal management to maintain reliable operation within the recommended temperature range.
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ISL6292BCRZ-T Overview
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