L9204FR

RF Diode Overview

The L9204FR is a high input voltage single-cell Li-ion battery charger manufactured by CEL. It integrates CC/CV charge functions for lithium batteries, accepting up to 30V input and delivering 0.35A output current with a typical 4.2V termination voltage. The device features thermal regulation and operates within a -40°C to +85°C temperature range. Packaged in an 8-pin DFN (2.0 x 3.0 x 0.90mm) with 0.5mm pitch, it supports programmable IMIN and provides status indications. Voltage accuracy is rated at 1%, and it does not accept CC adapters or include safety timers.

RF Diode Feature Summary

• Fully integrated high input voltage charging solution
• Thermal regulation for safe operation
• Programmable minimum input current threshold
• Status indication for charge completion and power presence

RF Diode Applications

• Single cell Li-ion battery charging
• Li-Polymer battery charging
• Portable electronic devices requiring high input voltage tolerance

RF Diode Procurement Notes

Verify the specific manufacturer source as CEL may distribute components originally from other foundries like Intersil/Renesas. Confirm RoHS compliance and lead-free status directly with the supplier. Check for obsolete status or lifecycle notices, as similar part numbers have been marked as outdated in some databases. Ensure the package dimensions match the required PCB footprint.

RF Diode Selection Notes

Select this component when a single-cell Li-ion charger with high input voltage capability is required. Verify that the 0.35A output current meets the system's charging requirements. Ensure the application environment stays within the specified -40°C to +85°C operating range. Confirm compatibility with the 8-pin DFN package constraints.

RF Diode Part Context

This component belongs to the family of high input voltage battery chargers designed for single-cell lithium chemistry. It serves as a cost-effective alternative to discrete charging solutions, integrating necessary control logic and power switches into a compact surface-mount package suitable for space-constrained portable applications.

RF Diode Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided data. Cross-reference with ISL9204 variants if pin-compatible replacements are needed, but verify electrical parameters and package dimensions carefully before substitution.