The ISL6298 is an integrated single-cell Li-ion or Li-polymer battery charger optimized for low current applications. The targeted applications include mini-disk (MD) players, Blue Tooth headsets, or other applications that use low-capacity battery cells. The ISL6298 is a linear charger that charges the battery in a CC/CV (constant current/constant voltage) profile. The charge current is programmable with an external resistor up to 450mA during the CC phase. Once the battery voltage reaches 4. 2V (or 4. 1V), the charger enters CV mode and the charge current starts to reduce. When the charger current drops to a user-programmable threshold, the charger indicates the end-of-charge with a STATUS pin. The charger does not actually terminate until a user-programmable total fast charge time is reached. If the battery voltage drops to a recharge threshold after termination, the charger will recharge the battery to its full capacity. The charger preconditions the battery with 20% of the programmed CC current if the battery voltage is below 2. 8V. The total precharge time is limited to 1/8 of the total fast charge time. The ISL6298 features charge current thermal foldback to guarantee safe operation when the printed circuit board is space-limited for thermal dissipation. Additional features include an NTC thermistor interface for monitoring the ambient temperature, the ability to disable the time limit of the fast charge, an FAULT indication, and a thermally enhanced QFN or DFN package.

Features

  • Complete Charger for Single-Cell Li-ion Batteries
  • Integrated Pass Element and Current Sensor
  • No External Blocking Diode Required
  • 1% Voltage Accuracy
  • Programmable Current Limit up to 450mA
  • Programmable End-of-Charge Current
  • Preconditioning with 20% Fast Charge Current
  • 10% Accuracy at 250mA
  • Charge Current Thermal Foldback
  • NTC Thermistor Interface for Battery Temperature Monitor
  • User Programmable Safety Timer
  • Ambient Temperature Range: -20°C to 70°C
  • Thermally-Enhanced QFN Packages
  • Pb-Free Available (RoHS Compliant)

Applications

  • MD Players, Blue-Tooth Headsets and MP3 Players
  • Portable Instruments
  • PDAs, Cell Phones and Smart Phones
  • Stand-Alone Chargers

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active DFN Tube 100
Availability
Active DFN Reel 6000
Availability
Active QFN Tube 75
Availability
Active QFN Reel 6000
Availability
Active QFN Tube 75
Availability
Active QFN Reel 6000
Availability

Documentation

Title language Type Format File Size Date
Datasheets & Errata
ISL6298 Datasheet Datasheet PDF 781 KB
User Guides & Manuals
ISL6298EVAL1 User Guide Manual PDF 536 KB
ISL6298EVAL2 User Guide Manual PDF 471 KB
Application Notes & White Papers
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
PCNs & PDNs
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products Product Change Notice PDF 327 KB
PCN10055 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia Product Change Notice PDF 248 KB
Other
TB363: Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs) Other PDF 293 KB
TB389: PCB Land Pattern Design and Surface Mount Guidelines for QFN Packages Other PDF 958 KB
TB379: Thermal Characterization of Packaged Semiconductor Devices Other PDF 653 KB

Boards & Kits

Part Number Title Type Company
ISL6298EVAL1 Li-ion/Li-Polymer Battery Charger Evaluation Board Evaluation Renesas
ISL6298EVAL2 Li-ion/Li-Polymer Battery Charger Evaluation Board Evaluation Renesas