ISL78692-1CR3Z-T

Battery Chargers Overview

The ISL78692-1CR3Z-T is an obsolete single-cell Li-ion or Li-polymer battery charger from Renesas Electronics Corporation. It integrates a power transistor and current sensor, offering 1% initial voltage accuracy and reverse battery leakage of 700nA. The device supports programmable constant current up to 1A via an external resistor and features charge current thermal foldback for safe operation in thermally constrained environments. It includes an NTC thermistor interface for temperature monitoring and automatic recharge capabilities. Designed for automotive applications, it is AEC-Q100 qualified and operates within an ambient temperature range of -40°C to +85°C.

Battery Chargers Feature Summary

• Integrated linear charger solution with built-in power transistor and current sensor for single-cell lithium batteries
• Charge current thermal foldback mechanism ensures safe operation under limited thermal dissipation conditions
• Supports preconditioning trickle charge for over-discharged batteries starting down to 2.65V input
• Includes NTC thermistor interface for monitoring battery temperature during the charging process

Battery Chargers Applications

• Automotive electronic systems requiring single-cell lithium battery management
• Portable devices utilizing USB bus power or AC adapter inputs
• Applications with space constraints necessitating compact thermal management solutions

Battery Chargers Procurement Notes

This component is officially listed as obsolete by the manufacturer. Availability is restricted to existing stock or secondary market sources. Verify the specific suffix -T indicates tape and reel packaging when sourcing replacements. Ensure compatibility with legacy automotive designs before procurement, as new production is discontinued.

Battery Chargers Selection Notes

Select this part for legacy automotive designs requiring a compact, integrated linear charger for single-cell lithium chemistry. It is suitable for environments where thermal dissipation is limited due to space constraints. Consider the obsolete status when designing new products; alternative modern chargers should be evaluated for new development cycles to ensure long-term supply stability.

Battery Chargers Part Context

The ISL78692 belongs to Renesas' portfolio of power management ICs derived from its Intersil heritage. It is housed in a 3x3mm thermally enhanced DFN package (LVM code). This series targets automotive-grade applications, adhering to AEC-Q100 standards. The device represents a specialized solution for low-voltage, high-reliability battery charging in constrained automotive electronics.

Battery Chargers Replacement Considerations

The part is obsolete. No direct public substitute part numbers are confirmed in the provided documentation. Designers must evaluate newer Renesas or third-party single-cell Li-ion chargers that meet AEC-Q100 requirements and offer similar thermal foldback and NTC interface features.