ISL9538HRTZ

Battery Chargers Overview

The ISL9538HRTZ is a Buck-Boost Narrow VDC battery charger IC designed for notebook and tablet applications. It supports 2, 3, or 4-series lithium-ion batteries with an input voltage range of 3.9V to 23.4V. The system output voltage is adjustable from 2.4V to 18.304V in 8mV steps. Key electrical parameters include a switching frequency range of 635kHz to 1000kHz, charge current limit accuracy of ±2.5%, and charging voltage accuracy of ±0.5%. Trickle charge currents are selectable at 64mA, 128mA, 256mA, or 512mA. It features a 4mm x 4mm 32-lead TQFN package.

Battery Chargers Feature Summary

• NVDC topology enabling simultaneous system power delivery and battery charging via buck, boost, or buck-boost modes.
• Integrated PSYS output providing an analog signal representing platform total power, compliant with Intel IMVP standards.
• SMBus and auto-increment I2C serial communication interfaces for programmable parameter configuration.
• Turbo mode ideal diode control supporting secondary adapter current limiting.

Battery Chargers Applications

• Notebook battery chargers
• Tablet NVDC charging systems
• Ultrabook power management
• USB-C interface platforms

Battery Chargers Procurement Notes

Verify the specific suffix 'H' against the official datasheet to confirm pinout and functional compatibility, as variations exist within the ISL9538 family. Confirm moisture sensitivity level (MSL 3) handling requirements during assembly. Ensure the ordering part number matches the exact package type and temperature grade specified in the manufacturer's documentation to avoid integration errors.

Battery Chargers Selection Notes

Select this component for designs requiring narrow input voltage DC-to-DC conversion for multi-cell lithium-ion packs. It is suitable for systems needing IMVP8 compliance through the PSYS feature. Consider the 4x4mm TQFN package constraints for thermal management. Verify that the required input voltage range falls within the 3.9V to 23.4V specification for optimal operation without dead zones.

Battery Chargers Part Context

The ISL9538HRTZ belongs to the ISL9538 series of battery charge management ICs manufactured by Renesas Electronics. This series utilizes R3 technology for high efficiency and fast transient response. The device is categorized under Power Management ICs (PMIC) specifically for battery charging applications in portable computing devices.

Battery Chargers Replacement Considerations

Consult the official datasheet for confirmed substitute part numbers. Variations such as ISL9538CHRTZ may share similar functionality but require verification of suffix differences regarding packaging or specific electrical characteristics before substitution.