IP5306
Highly integrated power bank system-on-chip combining boost converter, battery management, and LED indicators in a si...
Product Overview
Description
The IP5306 is a highly integrated power bank SOC that combines multiple functions in a single chip.
It integrates a synchronous boost converter, battery charging, power path management, and LED indicators.
This high integration reduces BOM cost and simplifies PCB design for power bank applications.
Product Series
IP
Primary Application
Mobile power banks
Key Features
- Highly integrated power bank solution
- Synchronous boost with 93% efficiency
- Integrated battery charger
- Power path management
- 4-LED battery indicator
- Key switch control
- Comprehensive protection
- Minimal external components
Specifications
| Input Voltage | 4.5V to 5.5V (USB input) |
|---|---|
| Battery Voltage | 3.0V to 4.2V (Li-ion) |
| Output Voltage | 5V |
| Max Output Current | 2.1A |
| Charging Current | 2A |
| Efficiency | Up to 93% |
| Package | ESOP-8 |
| Operating Temperature | -20°C to +85°C |
Applications
Mobile power banks
Electronic system design
Portable chargers
Battery and charging management
Battery backup devices
Battery and charging management
Emergency power supplies
Electronic system design
USB power accessories
Electronic system design
FAE Expert Insights
"The IP5306 is perfect for entry-level power bank designs where cost and simplicity are priorities. The integration level is impressive - you get charging, boost conversion, and LED indicators in one chip. I've helped customers create complete power bank designs with fewer than 15 components. The efficiency is good for this integration level, and the protection features are comprehensive. For basic 5V/2A power banks, this IC offers unbeatable value. It's not for high-power PD applications, but for standard power banks, it's an excellent choice."
All-in-one power bank solution with minimal BOM
— Kevin Liu, BeiLuo
Frequently Asked Questions
What battery types does IP5306 support?
The IP5306 is designed for single-cell lithium-ion or lithium-polymer batteries with nominal voltage of 3.7V. It supports batteries with capacity from 1000mAh to 10000mAh or more. The charging voltage is fixed at 4.2V, suitable for standard lithium cells. For other battery chemistries or configurations, consider other solutions.
Use IP5306 with standard 3.7V lithium cells. Contact us for other battery configurations.
How does the LED indicator work?
The IP5306 drives 4 LEDs to indicate battery level. Each LED is approximately 25% of battery capacity. During charging, the LEDs light up sequentially to show progress. When discharging, the LEDs indicate remaining capacity. The LED control is automatic and requires no external MCU.
The 4-LED indicator provides clear battery status. Connect LEDs as shown in the reference schematic.
Can IP5306 support pass-through charging?
Yes, IP5306 supports pass-through charging where the output remains active while charging the battery. The IC intelligently manages power flow, prioritizing output while charging the battery with available current. This allows the power bank to function as a UPS-style device.
Pass-through charging is supported automatically. No special configuration needed.
What is the maximum battery capacity supported?
There is no specific maximum battery capacity limit for IP5306. The IC can work with any capacity lithium cell from 1000mAh to 20000mAh or more. Charging time will vary based on battery capacity - larger batteries take longer to charge at the fixed 2A charging current. The discharge time depends on load and battery capacity.
Select battery capacity based on your product requirements. Charging time = Capacity / 2A.
Does IP5306 support fast charging protocols?
The IP5306 provides standard 5V/2.1A output without protocol negotiation. For fast charging with QC, PD, or other protocols, pair IP5306 with a protocol IC like IP2723T. The protocol IC handles device negotiation while IP5306 provides the power conversion.
For standard 5V power banks, IP5306 works standalone. For fast charging, add IP2723T protocol IC.
How do I calculate the power bank conversion efficiency?
Power bank efficiency considers both charging and discharging. Charging efficiency is typically 85-90% (battery energy / input energy). Discharging efficiency is 90-93% (output energy / battery energy). Overall efficiency is approximately 75-80%. IP5306 achieves good efficiency through synchronous rectification in both directions.
Expect 75-80% overall efficiency. This is typical for power bank applications.