1 Features

• Pin-to-pin and software compatible to BQ25703A

• Charge 1s to 4s battery from wide range of input

source

– 3.5-V to 24-V Input operating voltage

– Supports USB2.0, USB 3.0, USB 3.1 (Type

C), and USB Power Delivery (USB-PD) input

current settings

– Seamless transition among buck, buck-boost

and boost operations

– Input current and voltage regulation (IDPM and

VDPM) against source overload

• Power/current monitor for CPU throttling

– Comprehensive PROCHOT profile, IMVP8/

IMVP9 compliant

– Input and battery current monitor

– System power monitor, IMVP8/IMVP9

compliant

• Narrow voltage DC (NVDC) power path

management

– Instant-on with no battery or depleted battery

– Battery supplements system when adapter is

fully-loaded

– Battery MOSFET ideal diode operation in

supplement mode

• Power up USB port from battery (USB OTG)

– 3-V to 20.8-V VOTG With 8-mV resolution

– Output current limit up to 6.4 A with 50-mA

resolution

• TI patented Pass Through Mode (PTM) for system

power efficiency improvement and battery fast

charging

• When system is powered by battery only, Vmin

Active Protection (VAP) mode supplements battery

from input capacitors during system peak power

spike

• Input Current Optimizer (ICO) to extract max input

power

• 800-kHz or 1.2-MHz Programmable switching

frequency for 2.2-μH or 1.0-μH inductor

• Host control interface for flexible system

configuration

– I2C Port optimal system performance and

status reporting

– Hardware pin to set input current limit without

EC control

• Integrated ADC to monitor voltage, current and

power

• High accuracy for the regulation and monitor

– ±0.5% Charge voltage regulation

– ±2% Input/charge current regulation

– ±2% Input/charge current monitor

– ±4% Power monitor

• Safety

– Thermal shutdown

– Input, system, battery overvoltage protection

– Input, MOSFET, inductor overcurrent protection

• Safety-Related Certifications:

– IEC 62368-1 CB Certification

• Low battery quiescent current

• Package: 32-Pin 4 × 4 WQFN

2 Applications

• Drones, Bluetooth speakers, IP cameras,

detachable, tablet PCs and power bank

• Industrial and medical equipment

• Portable equipment with rechargeable batteries

3 Description

This device is a synchronous NVDC buck-boost

battery charge controller, offering a low component

count, high efficiency solution for space constrained,

1s-4s battery charging applications.