Product Description

Description:

• The bq2407x series of devices are integrated Li-Ion linear chargers and system power path management devices targeted at space-limited portable applications.
• The devices operate from either a USB port or an AC adapter and support charge currents up to 1.5 A.
• The input voltage range with input overvoltage protection supports unregulated adapters.
• The USB input current limit accuracy and start up sequence allow the bq2407x to meet USB-IF inrush current specifications.
• Additionally, the input dynamic power management (VIN-DPM) prevents the charger from crashing incorrectly configured USB sources.

Features:
• Fully Compliant USB Charger
– Selectable 100-mA and 500-mA Maximum
Input Current
– 100-mA Maximum Current Limit Ensures
Compliance to USB-IF Standard
– Input-Based Dynamic Power Management
(VIN-DPM) for Protection Against Poor USB
Sources
• 28-V Input Rating with Overvoltage Protection
• Integrated Dynamic Power Path Management
(DPPM) Function Simultaneously and
Independently Powers the System and Charges
the Battery
• Supports up to 1.5-A Charge Current with Current
Monitoring Output (ISET)
• Programmable Input Current Limit up to 1.5 A for
Wall Adapters
• System Output Tracks Battery Voltage (bq24072)
• Programmable Termination Current (bq24074)
• Battery Disconnect Function with SYSOFF Input
(bq24075, bq24079)
• Programmable Pre-Charge and Fast-Charge
Safety Timers
• Reverse Current, Short-Circuit and Thermal
Protection
• NTC Thermistor Input
• Proprietary Start-up Sequence Limits Inrush
Current
• Status Indication – Charging/Done, Power Good

Applications:
• Smart Phones
• Portable Media Players
• Portable Navigation Devices
• Low-Power Handheld Devices