ISL6291 - Intersil Corporation

ISL6291 Li-ion/Li Polymer Linear Battery Charger

VIN (Pin 1, 15, 16) VIN is the input power source pin that is connected to a wall adapter. V2P8 (Pin 8) V2P8 is a 2.8V reference voltage output. V2P8 pin outputs a 2.8V voltage when the input voltage rises above the POR threshold and outputs zero voltage otherwise. This pin can be used as an adapter presence signal. A 0.1µF Ceramic capacitor is recommended .

Features

• Integrated Linear Pass Element
• Integrated Charge Current Sensor
• No External Reverse Blocking Diode Required
• 1% Voltage Accuracy
• Programmable Current Limit Up to 2.0A
• Programmable End-of-Charge Current
• Trickle Charge an Over Discharged Battery
• Charge Current Thermal Foldback
• Simple Interface for Low-Cost Thermistor
• Accepts USB Bus Power
• Ambient Temperature Range: -20oC to 70oC
• Thermally-Enhanced 5x5 QFN Package (θJA = 33oC/W) Applications
• Handheld Devices
• Cell Phones
• PDAs
• Stand-Alone Chargers
• USB Bus-Powered Chargers Related Literature
• Technical Brief TB363.