ISL9538CHRTZ

Battery Chargers Overview

The ISL9538CHRTZ is a buck-boost narrow VDC battery charger IC designed for 2, 3, or 4-cell lithium-ion battery systems. It features an input voltage range of 3.9V to 23.4V with no dead zone and a system output voltage adjustable from 2.4V to 18.304V. The device supports up to 1MHz switching frequency and includes SMBus/I2C serial communication for parameter programming. Key electrical specifications include 0.5% charging voltage accuracy and charge current limit accuracy of ±2.5%. Trickle charge currents are selectable at 64mA, 128mA, 256mA, or 512mA.

Battery Chargers Feature Summary

• Supports NVDC charging topology for stable system bus voltage regulation while charging batteries.
• Integrates PSYS output providing analog system power monitoring compliant with Intel IMVP standards.
• Enables Turbo mode ideal diode control and secondary adapter current limiting for enhanced performance.
• Offers flexible operating modes including 100% 2-FET buck-only operation and battery delivery mode.

Battery Chargers Applications

• Notebook computers
• Tablets
• Ultrabooks
• Mobile power banks
• USB-C interface platforms

Battery Chargers Procurement Notes

Verify the specific suffix 'CHRTZ' against official Renesas documentation to confirm package type and tape/reel configuration. Ensure compatibility with required thermal management solutions for the TQFN package. Confirm that the ordering part number matches the exact pinout and electrical characteristics defined in the datasheet before finalizing procurement orders.

Battery Chargers Selection Notes

Select this component for applications requiring simultaneous system power regulation and battery charging via a single adapter. It is suitable for designs needing precise voltage monitoring through the PSYS pin for IMVP compliance. Consider the SMBus interface requirements for digital control and the specific input voltage range constraints when designing the power supply stage.

Battery Chargers Part Context

This part belongs to the ISL9538 family of battery chargers manufactured by Renesas Electronics. It utilizes advanced R3 technology to provide high light-load efficiency and fast transient response. The device is part of a broader portfolio of power management integrated circuits aimed at portable computing and mobile devices.

Battery Chargers Replacement Considerations

Consult official substitution lists for verified alternatives such as other ISL9538 variants. Ensure any replacement maintains compatible pinouts and electrical parameters. Verify that alternative components support the same NVDC topology and IMVP standards if required by the design.

Battery Chargers FAQ

Does the ISL9538CHRTZ support direct system powering without battery?

Yes, it can operate in battery delivery mode or allow the adapter to directly power the system depending on the configured operating mode.

What is the purpose of the PSYS output pin?

The PSYS pin provides an analog signal representing platform total power, complying with Intel IMVP standards for system power monitoring.