ISL88739HRZ-TR5698

Battery Chargers Overview

The ISL88739HRZ is a lithium-ion/polymer battery charger IC designed for 2 to 4-cell configurations. It supports Hybrid Power Boost (HPB) and Narrow Voltage DC (NVDC) topologies, operating with an input voltage up to 22V and output voltages ranging from 1.024V to 19.2V in 16mV steps. The device features an SMBus interface for programmable settings and includes comprehensive protection mechanisms such as overcurrent and thermal safeguards. Packaged in a 32-QFN (4x4mm) format, it utilizes N-channel MOSFETs for optimal performance.

Battery Chargers Feature Summary

• Configurable as HPB or NVDC charger supporting Turbo mode for system power sharing
• SMBus programmable settings with high-precision current monitoring outputs
• Robust protection including PROCHOT# indicators for system faults
• R3 modulation scheme providing excellent light-load efficiency

Battery Chargers Applications

• Notebook battery chargers
• Hybrid power boost systems
• Narrow voltage DC power supplies
• Portable electronic devices requiring multi-cell battery management

Battery Chargers Procurement Notes

Verify the specific suffix against official Renesas documentation, as standard listings typically use HRZ for tube packaging. Confirm end-of-life status and availability through authorized distributors. Ensure compatibility with required SMBus protocols and thermal requirements for the target application environment before finalizing procurement.

Battery Chargers Selection Notes

Select this component for applications requiring flexible HPB or NVDC configurations with precise current monitoring. Consider the 32-QFN package size and thermal dissipation capabilities. Verify that the 22V maximum input voltage and 19.2V output range meet system specifications. Ensure design compatibility with N-channel MOSFET external switches and SMBus communication requirements.

Battery Chargers Part Context

The ISL88739 series represents a family of universal battery chargers from Renesas, integrating advanced power management features. The HRZ variant specifically denotes the tube packaging option within the 32-QFN form factor. This part is part of the broader portfolio aimed at portable computing and industrial applications requiring reliable multi-cell charging solutions.

Battery Chargers Replacement Considerations

The ISL95522A is documented as a substitute product offering similar HPB and NVDC capabilities with SMBus interface support. Verify pinout compatibility and electrical parameter alignment when transitioning to alternative components.