ISL95521HRZ

Battery Chargers Overview

The ISL95521HRZ is a combo battery charger from Renesas Electronics, supporting 2-, 3-, or 4-cell lithium-ion batteries. It operates in Hybrid Power Boost (HPB) or Narrow VDC (NVDC) configurations to enable system Turbo mode, where the battery supplements the adapter during high load. The device utilizes N-channel MOSFETs for all switches and features an internal charge pump for rapid NFET activation. It includes hardware-based current limits, SMBus programmability, and comprehensive protection indicators like PROCHOT#. The component is housed in a 32-lead 4mm x 4mm QFN package.

Battery Chargers Feature Summary

• Configurable as HPB or NVDC charger with Turbo mode support
• Uses N-channel MOSFETs for all switches to optimize performance and BOM cost
• Internal charge pump enables fast or slow NFET turning based on requirements
• Provides PROCHOT# indicator for system low voltage, overcurrent, and overheating

Battery Chargers Applications

• Hybrid Power Boost (HPB) battery charging systems
• Narrow VDC (NVDC) battery charging systems
• Systems requiring simultaneous adapter and battery power supply
• Applications needing rapid battery removal handling during operation

Battery Chargers Procurement Notes

Verify the specific suffix HRZ against the official datasheet to confirm pinout and thermal pad configuration. Ensure compatibility with Intel PROCHOT# and PSYS requirements if integrating into compliant platforms. Check for RoHS compliance status and lead-free specifications prior to ordering. Confirm availability of design-in support documentation for SMBus programming and current sense resistor selection.

Battery Chargers Selection Notes

Select this component when designing systems that require flexible HPB or NVDC configurations. It is suitable for applications demanding high accuracy in adapter and battery current monitoring. Consider its Robust Ripple Regulator modulation for light-load efficiency needs. Evaluate the 16 switching frequency options to balance EMI and transient response. Verify that the 32-QFN package fits the PCB layout constraints.

Battery Chargers Part Context

The ISL95521 series belongs to Renesas' portfolio of versatile combo battery chargers. It is designed for modern portable electronics requiring efficient power management. The device integrates advanced protection features and SMBus interfaces for system integration. It supports various cell counts and offers configurable current sensing options for different power levels.

Battery Chargers Replacement Considerations

ISL95522A is listed as a related product with similar HPB/NVDC capabilities. Verify pin-to-pin compatibility and parameter alignment before substitution. Review updated datasheets for any functional differences or enhanced features in alternative models.