ISL6256AHAZ-T

Battery Chargers Overview

The ISL6256AHAZ-T is a highly integrated battery charger controller designed for notebook computers, manufactured by Renesas Electronics (formerly Intersil). It supports lithium-ion and lithium-polymer batteries with 2 to 4 cells in series. The device features a maximum charging current of 2.6A and operates within a supply voltage range of 7V to 25V. It provides over-temperature, over-voltage, and short-circuit protection. The component is housed in a 28-pin SSOP or QSOP package and functions within an operating temperature range of -10°C to +100°C.

Battery Chargers Feature Summary

• Integrates automatic power source selection between the AC adapter and the battery system
• Employs synchronous buck topology with low-side MOSFET diode emulation for improved light-load efficiency
• Includes comprehensive fault protection mechanisms against over-temperature, over-voltage, and output short circuits

Battery Chargers Applications

• Battery charging systems for notebook computers
• Power management for portable electronic devices using Li-Ion or Li-Polymer batteries
• Systems requiring automatic switching between external adapter power and battery backup

Battery Chargers Procurement Notes

Verify component authenticity due to discontinuation status. Confirm package variant matches design requirements as both SSOP and QSOP options exist. Check for RoHS3 compliance documentation. Validate that the specific suffix corresponds to the reel packaging format if required by assembly equipment. Ensure compatibility with existing thermal management designs given the 100°C junction temperature limit.

Battery Chargers Selection Notes

Select this component for applications requiring a single-chip solution for multi-cell lithium battery charging. It is suitable for designs prioritizing high efficiency at light loads through synchronous rectification. Consider the 28-pin package constraints during PCB layout. Verify input voltage capabilities align with the adapter specifications. Note that this part is discontinued; evaluate alternative sources or redesign timelines accordingly.

Battery Chargers Part Context

The ISL6256A belongs to the ISL625x family of battery chargers from Intersil, now part of Renesas. This family targets portable computing markets. The AHAZ-T designation indicates the automotive-grade or extended temperature variant in tape-and-reel packaging. It shares functional similarities with the ISL6255 and ISL6253 but offers specific cell count support and integration levels tailored for notebook form factors.

Battery Chargers Replacement Considerations

Public records indicate the ISL6256AHAZ is End-of-Life (EOL) as of March 2025. No direct public substitute part numbers are confirmed in the provided data. Designers should consult Renesas for official obsolescence notices and potential recommended replacements.