1 Features
1• Operation as Parallel Charger to Provide Fast
Charging in Dual Charger Operation
• High-Efficiency, 1.5-MHz, Synchronous Switch-
Mode Buck Charger
– 92% Charge Efficiency at 2 A from 5-V Input
– Optimized for USB Voltage Input (5 V)
– Low Power Pulse Frequency Modulation
(PFM) Mode for Light Load Operations
• Single Input to Support USB Input and High
Voltage Adapters
– Support 3.9-V to 13.5-V Input Voltage Range
With 22-V Absolute Maximum Input Voltage
Rating
– Programmable Input Current Limit (100 mA to
3.2 A With 100-mA Resolution) to Support
USB 2.0, USB 3.0 Standards and High Voltage
Adaptors (IINDPM)
– Maximum Power Tracking by Input Voltage
Limit Up to 5.4 V (VINDPM)
– VINDPM Threshold Automatically Tracks
Battery Voltage
• High Charge Efficiency With 19.5-mΩ Charging
Current Sensing MOSFET
• Narrow VDC (NVDC) Power Path Management
– Instant-On Works with No Battery or Deeply
Discharged Battery
– Ideal Diode Operation in Battery Supplement
Mode
• Flexible Autonomous and I2C Mode for Optimal
System Performance
• High Integration Includes All MOSFETs, Current
Sensing and Loop Compensation
• 17-μA Low Battery Leakage Current
• High Accuracy
– ±0.5% Charge Voltage Regulation
– ±5% at 1.5-A Charge Current Regulation
– ±6% at 1.38-A Charge Current Regulation
– ±10% at 0.9-A Input Current Regulation
– Remote Battery Sensing for Fast Charge

2 Applications
• Smart Phones
• Tablet

3 Description
The bq25600C devices are highly-integrated 3.0-A
switch-mode battery charge management and system
power path management device for single cell Li-Ion
and Li-polymer battery. The low impedance power
path optimizes switch-mode operation efficiency and
reduces battery charging time. The I2C serial
interface with charging and system settings makes
the device a truly flexible solution.