Li-ion/Li Polymer Battery Charger Accepting Two Power Sources

The ISL6293 is a fully integrated low-cost single-cell Li-ion or Li-polymer battery charger. The charger accepts two power inputs, normally one from a USB (Universal Serial Bus) port and another one from a desktop cradle. The ISL6293 is an ideal charger for smart handheld devices that need to communicate with a personal computer via USB.

Features
• Complete Charger for Single-Cell Li-ion/Polymer Batteries
• Accept Two Power Sources
• Low Component Count
    - Integrated Pass Element
    - Integrated Charge-Current Sensor with 10% Accuracy
    - No External Blocking Diode Required
• Charge Current Thermal Foldback for Thermal Protection
• 28V Maximum Voltage for the Cradle Input
• Charge Indication
• Adapter Presence Indication
• Less than 1µA Leakage Current off the Battery when No Input Power Attached
• Ambient Temperature Range: -40°C to 85°C
• Thermally-Enhanced 3x3 DFN Package
• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications
• Smart Handheld Devices
• Cell Phones, PDAs, MP3 Players
• Digital Still Cameras
• Handheld Test Equipment