ISL9205BIRZ-T

Battery Chargers Overview

The ISL9205BIRZ-T is an integrated single-cell Li-ion or Li-polymer battery charger from the ISL9205 family, manufactured by Renesas Electronics Corporation. It operates with input voltages as low as 2.5V and up to 6.5V, supporting both linear and pulse charging modes depending on the AC adapter characteristics. The device implements a standard Constant Current/Constant Voltage (CC/CV) charge profile. Key electrical specifications include a maximum programmable charge current of 900mA and a battery voltage of 4.2V. It features 25mV voltage accuracy over the full temperature and input voltage range, and 15mV accuracy at room temperature. The component is housed in a 16-QFN (3x3mm) package with exposed pad, supports an ambient operating temperature range of -40°C to +85°C, and has a leakage current of less than 3μA when disabled.

Battery Chargers Feature Summary

• Integrated pass element and current sensor eliminate the need for external blocking diodes
• Thermaguard thermal foldback function reduces charge current if die temperature exceeds typical limits
• Programmable charge current via external resistor and end-of-charge current settings
• NTC interface allows for external temperature monitoring of battery or ambient conditions

Battery Chargers Applications

• Electronic Toll Collection (ETC) systems
• GNSS-enabled devices
• Portable consumer electronics requiring single-cell Li-ion/polymer charging

Battery Chargers Procurement Notes

Verify the specific suffix 'B' against the official datasheet to confirm functional variants within the ISL9205 family. Confirm package type matches the 16-QFN specification. Check for End-of-Life (EOL) status updates, as distribution records indicate potential obsolescence actions for this product line. Ensure RoHS compliance requirements are met for the intended application environment.

Battery Chargers Selection Notes

Select this component for designs requiring a low-component-count solution for single-cell batteries. It is suitable for applications where input power sources may have low voltage or current-limiting characteristics, as it adapts to pulse charging modes. Consider the 16-QFN package constraints for PCB layout. Verify that the required charge current and thermal management capabilities align with the Thermaguard protection features provided.

Battery Chargers Part Context

The ISL9205BIRZ-T belongs to the ISL9205 family of chargers, which includes variants like ISL9205, ISL9205A, ISL9205C, and ISL9205D. These devices share core functionalities such as CC/CV charging profiles and thermal protection. The 'B' suffix typically denotes a specific functional or pinout variant within this family, distinct from other suffixes that may offer different feature sets or package options.

Battery Chargers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Renesas Electronics for current alternative recommendations due to the discontinued status indicated in distributor records.