Battery charger controller BQ25713

Overview The BQ25713/BQ25713B is a synchronous NVDC switch‑mode buck‑boost battery charge controller for 1‑ to 4‑series‑cell systems. It provides automatic buck, boost and buck‑boost transitions, USB‑PD and USB‑OTG support, and system‑level protections to enable reliable operation in space‑constrained battery‑powered devices. Vmin Active Protection and Input Current Optimizer features help maintain system stability during peak load events.

Key features

• Pin‑to‑pin and software compatible with BQ25703A
• Charges 1–4 series cells; supports multiple chemistries (Li‑Ion, LiPo, LiFePO4, lead‑acid, NiMH, NiCd, SuperCap)
• Wide input range: 3.5 V to 24 V (absolute max 30 V)
• Supports USB 2.0/3.0/3.1 (Type‑C) and USB Power Delivery (USB‑PD) input current settings
• Seamless automatic transitions among buck, boost and buck‑boost modes
• NVDC power‑path management with instant‑on and battery supplement mode
• USB OTG: adjustable VBUS 3.0 V to 20.8 V with 8 mV resolution; OTG current limit up to 6.4 A (50 mA resolution)
• Input Current Optimizer (ICO) and IDPM/VDPM for source protection and maximum input power extraction
• TI Pass Through Mode (PTM) for improved efficiency and fast charging
• Integrated ADC for voltage, current and power monitoring; PROCHOT output for CPU throttling (IMVP8/IMVP9 profiles)
• Programmable switching frequency: 800 kHz or 1.2 MHz
• High regulation accuracy: ±0.5% charge voltage; ±2% input/charge current regulation and monitoring; ±4% power monitor
• Safety features: thermal shutdown, input/system/battery overvoltage and overcurrent protections
• Certification: IEC 62368‑1 CB; low quiescent battery current
• Package: 32‑pin 4 × 4 mm WQFN

Electrical and mechanical specifications

• Supported series cells: 1, 2, 3, 4
• Maximum charge current: 8.128 A
• Battery charge voltage range: 1.024 V to 19.2 V
• Input operating voltage: 3.5 V to 24 V (absolute max 30 V)
• Control topology: synchronous NVDC switch‑mode buck‑boost
• Control interface: I2C plus hardware pin for input current limit
• Programmable switching frequency: 800 kHz or 1.2 MHz
• Operating temperature: −40 °C to 85 °C
• Package: 32‑pin 4×4 mm WQFN

Applications Designed for compact, battery‑powered industrial and portable systems such as embedded controllers, handheld instruments, rugged laptops/tablets and other devices that require flexible input sources, USB‑PD compatibility and reliable battery management in constrained PCB areas.

Documentation and resources Design resources include datasheet, application notes, evaluation module and reference designs to accelerate integration and system evaluation. Evaluation module available for development and testing.