BQ25883RGET.A中文资料德州仪器数据手册PDF规格书

1 Features

1• High-efficiency 2-A, 1.5MHz switch mode boost

charger

– 93.4% Charge efficiency at 5V adapter, 7.6-V

battery, 1-A charge

– Optimized for USB input and 2-cell Li-Ion

battery

– Selectable low power PFM mode for light load

operation

• Single input to support USB input adapters

– Supports 3.9 V – 6.2 V input voltage range

with 20-V absolute maximum input voltage

rating

– Input current limit (500 mA to 3.3 A with 100-

mA resolution) to support USB2.0, USB3.0

standard adapters

– Maximum power tracking by input voltage limit

up-to 5.5 V

– Integrated USB D+/D- auto-detect USB SDP,

CDP, DCP, and non-standard adapters

• Power path management and I2C control

– Highest battery discharge efficiency with 17mΩ

battery discharge MOSFET

– Narrow VDC (NVDC) power path management

– Instant-on system on with no battery or

deeply discharged battery

– Ideal diode operation in battery supplement

mode

• USB on-the-go (OTG) with adjustable output from

4.5V to 5.5V

– Buck converter with up-to 2 A output

– 94% Efficiency at 5 V, 1 A output

– Accurate constant current (CC) regulation and

output short protection

– Selectable low power PFM mode for light load

operation with out-of-audio option

• Input current optimizer (ICO) to maximize input

power without overloading adapters

• Integrated 16-bit ADC for system monitoring (BUS

voltage and current, each cell voltage, charge

current, SYS voltage, and NTC and die

temperature)

• High integration includes all MOSFETs, current

sensing and loop compensation

• High accuracy

– ±0.5% Charge voltage regulation

– ±5% Charge current regulation

– ±7.5% Input current regulation

• Safety

– Battery temperature sensing in charge and

OTG buck mode

– Thermal regulation and thermal shutdown

2 Applications

• Bluetooth speaker

• EPOS Printer

• Portable POS

• Wireless security camera

3 Description

The BQ25883 is a highly-integrated 2-A boost switchmode

battery charge management and system power

path management device for 2-cell (2s) Li-Ion and Lipolymer

battery. The BQ25883 has I2C control with

OTG and power path.