1 Features
• High-efficiency, 1.5-MHz, synchronous switchmode buck charger
– 92% Charge efficiency at 2 A from 5-V input
– Optimized for USB voltage input (5 V)
– Selectable low power Pulse Frequency
Modulation (PFM) Mode for light load
operations
• Supports USB On-The-Go (OTG)
– Boost converter with up to 1.2-A output
– 92% Boost efficiency at 1-A output
– Accurate Constant Current (CC) limit
– Soft-start up to 500-μF capacitive load
– Output short circuit protection
– Selectable low power 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
– Auto detect USB BC1.2, SDP, CDP, DCP and
non-standard adaptors
• High battery discharge efficiency with 19.5-mΩ
battery discharge MOSFET
• Narrow VDC (NVDC) power path management
– Instant-on works with no battery or deeply
discharged battery
– Ideal diode operation in Battery Supplement
Mode
• BATFET Control to support ship mode, wake up
and full system reset
• 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
