SC2720
Ultra-low power single-cell fuel gauge with sub-50μA operating current for wearable and IoT applications
Product Overview
Description
The SC2720 is an ultra-low power fuel gauge designed specifically for wearable devices and IoT applications where every microamp counts. It provides accurate battery monitoring with operating current below 50μA.
The device uses advanced impedance tracking technology to maintain accurate state-of-charge reporting throughout the battery's lifetime. The compact WLCSP-6 package minimizes PCB footprint for space-constrained designs.
Despite its low power consumption, the SC2720 provides comprehensive battery monitoring including voltage, current, temperature, and accurate SOC/SOH reporting via I2C interface.
Product Series
SC
Primary Application
Smart watches
Key Features
- Ultra-low power (<50μA operating)
- Impedance tracking technology
- Compact WLCSP-6 package (1.0mm x 1.5mm)
- Accurate SOC and SOH reporting
- Integrated temperature sensor
- I2C interface
- Automatic calibration
Specifications
| Battery Type | Single-cell Li-ion/Li-polymer |
|---|---|
| Voltage Accuracy | ±5mV |
| Current Accuracy | ±1% |
| SOC Accuracy | 3-5% |
| Interface | I2C |
| Package | WLCSP-6 |
Applications
Smart watches
Electronic system design
Fitness trackers
Electronic system design
TWS earbuds
Electronic system design
IoT sensors
Sensor signal conditioning
Wearable medical devices
Medical electronics
FAE Expert Insights
"The SC2720 is specifically designed for ultra-low power applications. The sub-50μA operating current is a game-changer for wearables that need to monitor battery status without significantly impacting battery life. The tiny WLCSP-6 package (just 1.0mm x 1.5mm) is perfect for the most space-constrained designs. I've used this part in several smartwatch and fitness tracker designs where every microamp and every square millimeter counts. The accuracy is comparable to larger fuel gauges - you don't sacrifice performance for power savings. Key design tips: use a small sense resistor (20-50mΩ) to minimize power loss, place the IC very close to the battery connector, and ensure good Kelvin connections for accurate current sensing. The auto-calibration feature reduces production test time. This is the ideal fuel gauge for power-sensitive wearable applications."
Ultra-low power fuel gauge with tiny footprint for wearable applications
— Michael Chen, BeiLuo
Frequently Asked Questions
How does SC2720 achieve such low power consumption?
The SC2720 achieves ultra-low power through: (1) Optimized measurement intervals - Takes periodic measurements then enters low-power sleep. (2) Efficient ADC design - High-resolution measurements with minimal power. (3) Smart algorithms - Predictive modeling reduces measurement frequency. (4) Low-power I2C - Optimized interface for minimal communication power. (5) Sub-50μA average current extends battery life significantly in always-on applications.
Contact LiTong for low-power design optimization.
What is the WLCSP-6 package size?
The WLCSP-6 package is extremely compact: (1) Dimensions - 1.0mm x 1.5mm x 0.6mm height. (2) Ball pitch - 0.4mm pitch. (3) Ball count - 6 solder balls. (4) Footprint - Approximately 1.5 square millimeters. (5) Comparison - One of the smallest fuel gauge packages available. This tiny size enables fuel gauge integration in the most space-constrained wearable designs.
Contact LiTong for WLCSP package handling and layout guidance.
FAQ 3 for SC2720?
This is additional FAQ information for SC2720. Contact LiTong for detailed technical support and application guidance.
Contact LiTong for technical support.
FAQ 4 for SC2720?
This is additional FAQ information for SC2720. Contact LiTong for detailed technical support and application guidance.
Contact LiTong for technical support.
FAQ 5 for SC2720?
This is additional FAQ information for SC2720. Contact LiTong for detailed technical support and application guidance.
Contact LiTong for technical support.