1 Features
• High efficiency 5-A, 1.5-MHz Switch Mode buck
charge
– 93% Charge efficiency at 2 A and 91% charge
efficiency at 3-A charge current
– Optimize for high voltage input (9 V to 12 V)
– Low power PFM Mode for light-load operations
• USB On-the-Go (OTG) with adjustable output from
4.5 V to 5.5 V
– Selectable 500-kHz and 1.5-MHz Boost
Converter with up-to 2.4-A output
– 93% Boost efficiency at 5 V at 1-A output
– Accurate Hiccup Mode overcurent protection
• Single input to support USB input and adjustable
high voltage adapters
– Support 3.9-V to 14-V input voltage range
– Input current limit (100 mA to 3.25 A with
50-mA resolution) to support USB2.0, USB3.0
standard and high voltage adapters
– Maximum power tracking by input voltage limit
up-to 14 V for wide range of adapters
– Auto detect USB SDP, CDP, DCP, and nonstandard
adapters (BQ25890)
• Input Current Optimizer (ICO) to maximize input
power without overloading adapters
• Resistance Compensation (IRCOMP) from charger
output to cell terminal
• Highest battery discharge efficiency with 11-mΩ
battery discharge MOSFET up to 9 A
• Integrated ADC for system monitor
(voltage, temperature, charge current)
• 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
• 12-μA Low battery leakage current to support Ship
Mode
• High Accuracy
– ±0.5% Charge voltage regulation
– ±5% Charge current regulation
– ±7.5% Input current regulation
• Safety
– Battery temperature sensing for charge and
Boost Mode
– Thermal regulation and thermal shutdown

2 Applications
• Smartphone
• Tablet PC
• Portable Internet Devices

3 Description
The BQ25890, BQ25892 are highly-integrated 5-A
switch-mode battery charge management and system
power path management device for single cell Li-Ion
and Li-polymer battery. The devices support high
input voltage fast charging. The low impedance power
path optimizes switch-mode operation efficiency,
reduces battery charging time and extends battery life
during discharging phase.