The ISL6294 is a cost-effective, fully integrated high input voltage single-cell Li-ion battery charger. The charger uses a CC/CV charge profile required by Li-ion batteries. The charger accepts an input voltage up to 28V but is disabled when the input voltage exceeds the OVP threshold, typically 6. 8V, to prevent excessive power dissipation. The 28V rating eliminates the overvoltage protection circuit required in a low input voltage charger. The charge current and the end-of-charge (EOC) current are programmable with external resistors. When the battery voltage is lower than typically 2. 55V, the charger preconditions the battery with typically 20% of the programmed charge current. When the charge current reduces to the programmable EOC current level during the CV charge phase, an EOC indication is provided by the CHG pin, which is an open-drain output. An internal thermal foldback function protects the charger from any thermal failure. Two indication pins (PPR and CHG) allow simple interface to a microprocessor or LEDs. When no adapter is attached or when disabled, the charger draws less than 1µA leakage current from the battery.

Features

  • Complete Charger for Single-Cell Li-ion/Polymer Batteries
  • Integrated Pass Element and Current Sensor
  • No External Blocking Diode Required
  • Low Component Count and Cost
  • 1% Voltage Accuracy
  • Programmable Charge Current
  • Programmable End-of-Charge Current
  • Charge Current Thermal Foldback for Thermal Protection
  • Trickle Charge for Fully Discharged Batteries
  • 28V Maximum Voltage for the Power Input
  • Power Presence and Charge Indications
  • Less Than 1µA Leakage Current off the Battery When No Input Power Attached or Charger Disabled
  • Ambient Temperature Range: -40°C to +85°C
  • 8 Ld 2x3 DFN and 8 Ld SOIC Packages
  • Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

  • Mobile Phones
  • Blue-Tooth Devices
  • PDAs
  • MP3 Players
  • Stand-Alone Chargers
  • Other Handheld Devices

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active DFN Reel 6000
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL6294 Datasheet Datasheet PDF 518 KB
User Guides & Manuals
ISL6294EVAL1Z User Guide Manual PDF 873 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
PCNs & PDNs
PCN10055 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia Product Change Notice PDF 248 KB

Boards & Kits

Part Number Title Type Company
ISL6294EVAL1Z High Input Voltage Li-ion Battery Charger Evaluation Board Evaluation Renesas
Talking-Pen Talking Pen Reference Design Reference Renesas