IP5306 Fully Integrated Power Bank Charger IC SOIC-8

IP5306 Fully Integrated Power Bank Charger IC SOIC-8 is an all-in-one power management solution designed for single-cell Lithium-Ion or Lithium-Polymer battery power banks. This highly advanced chip integrates a multi-mode boost converter, a linear battery charger circuit, and a precise battery level indicator system into a single ultra-compact package. Consequently, it eliminates the need for separate charging, discharging, and indicator ICs, which saves considerable PCB space and reduces overall system bill of materials (BOM) costs. The chip also features high-efficiency power conversion, delivering up to 2.4A of charging current and synchronous boost output. Furthermore, its comprehensive suite of built-in safety mechanisms protects the battery pack from overcurrent, overvoltage, and thermal issues. Therefore, developers can easily design sleek, highly reliable, and energy-efficient portable power solutions by incorporating the IP5306 IC.

Key Features:

• All-in-One Integration: Combines synchronous charging, synchronous boosting, and LED battery power state indication to dramatically reduce external component count.
• High Efficiency Conversion: Achieves boost conversion efficiency up to 92%, preserving precious battery energy and lowering thermal emissions during high-load operations.
• Intelligent Load Detection: Automatically detects when a load connects or disconnects, allowing the system to sleep when idle to save power.
• Comprehensive Protection: Provides robust safety functions including input overvoltage, battery overcharge, over-discharge, output overcurrent, and thermal shutdown defenses.
• Customizable Indicator Modes: Supports 1, 2, 3, or 4 LED power indicators directly, simplifying UI design for tracking remaining battery capacity.

Technical Specifications:

• Input Voltage Range (V_IN): 4.5 V to 5.5 V
• Output Voltage Range (V_OUT): 5.0 V ±0.1 V (Boost Mode)
• Maximum Battery Charging Current: Up to 2.4 A (Adjustable via external resistor)
• Maximum Boost Output Current: 2.1 A (Continuous output capacity)
• Battery Charging Target Voltage: 4.20 V (±0.5% high-precision accuracy)
• Quiescent Current: ≤ 100 μA (Standby state power consumption)
• Switching Frequency: ≈ 500 kHz

Mechanical Specifications:

• Package Type: SOIC-8 (Small Outline Integrated Circuit, 8 Pins)
• Mounting Configuration: Surface Mount Technology (SMT)
• Lead Plating: Matte Tin / Lead-Free Compliant
• Thermal Resistance (Junction-to-Ambient): Engineered for optimized thermal dissipation under full output loads.

Dimensions:

• Package Length: ≈ 4.90 mm
• Package Width (Including pins): ≈ 6.00 mm
• Package Height: ≈ 1.55 mm
• Pin Pitch: 1.27 mm (Standard SOIC spacing)
• Weight: ≈ 0.08 g

Pinout and Wiring:

• Pin 1 (SYS): Connects to the system output and boost voltage terminal to deliver the stable 5V output.
• Pin 2 (VIN): Receives the 5V input charging source from standard USB ports or adapters.
• Pin 3 (BAT): Connects directly to the positive terminal of the single-cell Lithium battery.
• Pin 4 (GND): Connects to the primary circuit ground and battery negative terminal.
• Pin 5 (LED1 / KEY): Serves a dual function for the first status LED and external push-button control input.
• Pin 6 (LED2): Connects to the second LED indicator to monitor battery capacity levels.
• Pin 7 (LED3): Connects to the third LED indicator for battery capacity monitoring.
• Pin 8 (LED4): Connects to the fourth LED indicator to complete the full capacity display panel.
• Wiring Note: However, you must design heavy copper traces for the BAT, SYS, and GND runs to safely manage the high charge and discharge currents.

Datasheet Reference:

• Download Injoinic IP5306 Power Bank IC Datasheet

Commonly Used in:

• Portable Power Banks: Drives consumer pocket-sized chargers and compact emergency power packs.
• Battery-Powered Microcontroller Kits: Powers portable DIY electronic stations, outdoor data loggers, and robotic controllers.
• Handheld Equipment: Manages internal battery charging and 5V power rails in electronic test instruments.

Applications:

• Uninterruptible Power Supplies (UPS): Providing low-power 5V backup options for small networking systems or router modules.
• Smart Consumer Devices: Managing internal power management routing within portable bluetooth speakers and hand-warmers.
• Li-Po Charging Modules: Creating high-current, standalone single-cell custom battery charger boards.

Equivalent Models:

• IP5305: A closely related power management IC from the same manufacturer, offering slightly lower maximum current limits.
• ETA9742: A popular alternative power bank management chip featuring synchronous boost and linear charging options.
• TP5400: A similar step-up booster and lithium battery charger component, however, it generally provides lower maximum output current than the IP5306.

Package Includes:

• 1 x IP5306 Fully Integrated Power Bank Charger IC SOIC-8