1FEATURES
• High-Efficiency Switch Mode Charger with
Separate Power Path Control
– Make a GSM Call with a Deeply Discharged
Battery or No Battery
– Instantly Startup System from a Deeply
Discharged Battery or No Battery
• Dual Input Charger
– 20V Input Rating, With Over-Voltage
Protection (OVP)
– 6.5V for USB Input
– 10.5V for IN Input
– Integrated FETs for Up to 2.5A Charge Rate
– Up to 2.5A from IN Input
– Up to 1.5A from USB Input
• Highly Integrated Battery N-Channel MOSFET
Controller for Power Path Management
• Safe and Accurate Battery Management
Functions
– 0.5% Battery Regulation Accuracy
– 10% Charge Current Accuracy
• Adjustable Charge Current, Input Current
Limit, and VINDPM Threshold (for IN input)
• Easy JEITA Implementation
– Charge Parameter Selector Inputs (CE1,
CE2) for (bq24165)
• Voltage-based, NTC Monitoring Input (TS)
– Standard Temperature Range (bq24166)
– JEITA Compatible (bq24167)
• Thermal Regulation Protection for Output
Current Control
• Low Battery Leakage Current, BAT Short-
Circuit Protection
• Soft-Start Feature to Reduce Inrush Current
• Thermal Shutdown and Protection
• Available in Small 2.8mm x 2.8mm 49-ball
WCSP or 4mm x 4mm QFN-24 Packages

APPLICATIONS
• Handheld Products
• Portable Media Players
• Portable Equipment
• Netbook and Portable Internet Devices

DESCRIPTION
The bq24165, bq24166 and bq24167 are highly
integrated single cell Li-Ion battery charger and
system power path management devices targeted for
space-limited, portable applications with high capacity
batteries. The single cell charger has dual inputs
which allow operation from either a USB port or
higher power input supply (i.e., AC adapter or
wireless charging input) for a versatile solution. The two inputs are fully isolated from each other and are
managed by the bq24165/166/167 with the IN input
having precedence.