Charger IC Lithium Ion/Polymer 29-VQFN-HR (4x4)
The BQ25792 is a switch-mode synchronous buck-boost charger with full power-path management. It can automatically regulate power flow between the input source, system load, and battery.
It supports a wide input range and is designed for USB Type-C™ / USB Power Delivery (USB-PD) systems, enabling both charging and OTG (power output from battery) operation.
⭐ Key Features
⚡ High-performance charging
Up to 5 A charge current
Supports 1S to 4S battery packs
High efficiency (up to ~96% under typical conditions)
Programmable switching frequency: 750 kHz or 1.5 MHz
🔋 Wide input support
Input voltage range: 3.6 V to 24 V
Absolute max rating up to 30 V
Supports USB adapters and barrel jack sources
Detects USB charging standards (BC1.2, DCP, CDP, HVDCP, etc.)
🔄 Buck-boost power conversion
Seamless buck, boost, and buck-boost operation
Maintains stable system voltage even when battery is low or input varies
🔌 USB-PD / OTG support
USB Power Delivery (PD 3.0 compatible)
Supports OTG output (battery powers USB port)
OTG voltage range: 2.8 V to 22 V
🧠 Intelligent power management
NVDC power path management (system can run without battery)
Dual-input power mux controller (select between two power sources)
Battery supplement mode (prevents input overload)
📊 Monitoring & control
Integrated 16-bit ADC for voltage, current, temperature monitoring
Fully I²C configurable
Autonomous or host-controlled operation
🛡️ Protection & safety
Input and battery over-voltage/over-current protection
Thermal regulation and shutdown
Charging safety timer
MOSFET protection (internal switching FETs included)
📦 Package
29-pin VQFN (4 mm × 4 mm) package
Industrial temperature range: -40°C to 85°C
#CommonPartsLibrary #IntegratedCircuit #PowerManagement #Battery-charger
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