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.