INJOINIC IP5305

A multifunctional power management SOC integrating a boost converter, lithium battery charge management, and battery level indication, providing a complete power solution for power banks. High integration and rich features require minimal external components, effectively reducing overall solution size and lowering BOM cost. A single inductor achieves both buck and boost functionality. The DC-DC converter operates at 350KHz, supporting low-cost inductors and capacitors. The synchronous boost system delivers a maximum output current of 1.0A with conversion efficiency up to 91%. Under no-load conditions, it automatically enters sleep mode, reducing quiescent current to 50uA. Switch-mode charging technology provides a maximum charging current of 1.2A with charging efficiency up to 93%. Built-in IC temperature and input voltage sensing intelligently regulate charging current. Supports 1, 2, 3, or 4 LED battery level indicators.

• 1.0A synchronous boost conversion, 1.2A synchronous switching charge, boost efficiency up to 91%
• Charging efficiency up to 93%
• Built-in power path management, supports pass-through charging
• Adaptive charging current regulation, compatible with all adapters
• Charging voltage accuracy: ±0.5%
• Supports 4.20/4.30/4.35/4.40V batteries
• Supports 4/3/2/1 LED battery level display
• Power-on button
• Built-in flashlight driver, automatic detection of phone insertion and removal
• Intelligent load detection, automatic standby entry, standby current less than 100μA
• Integrated power MOSFETs, single-inductor charge/discharge, single-layer PCB
• Output overcurrent, overvoltage, and short-circuit protection
• Input overvoltage, overcharge, over-discharge, and overcurrent discharge protection
• System-level overtemperature protection
• ESD 4KV, transient voltage withstand 11V

• Power banks / portable chargers
• Mobile phones, tablets, and other portable devices