STC3115:Gas gauge IC with alarm output for handheld applications
The STC3115 includes the hardware functions required to implement a low-cost gas gauge for battery monitoring. The STC3115 uses current sensing, Coulomb counting and accurate measurements of the battery voltage to estimate the state-of-charge (SOC) of the battery. An internal temperature sensor simplifies implementation of temperature compensation.
An alarm output signals a low SOC condition and can also indicate low battery voltage. The alarm threshold levels are programmable.
The STC3115 offers advanced features to ensure high performance gas gauging in all application conditions.
Key Features
- OptimGauge™ algorithm
- 0.25% accuracy battery voltage monitoring
- Coulomb counter and voltage-mode gas gauge operations
- Robust initial open-circuit-voltage (OCV) measurement at power up
- Programmable low battery alarm
- Internal temperature sensor
- Battery swap detection
- Low power: 45 μA in power-saving mode, 2 μA max in standby mode
- Micro-sized packages:
- 1.4 x 2.0 mm 10-bump CSP package
- 2.0 x 3.0 mm DFN10 package
Product Specifications
Application Notes
User Manuals
Presentations
Brochures
Evaluation Tool Software
Part Number | Manufacturer | Description |
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STSW-BAT001 | ST | STC3115 Open source driver |
Solution Evaluation Tools
Part Number | Manufacturer | Description |
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STEVAL-ISB014V2 | | Battery monitoring with alarm output for gas gauge applications based on the STC3115 |
STEVAL-WESU1 | ST | Wearable sensor unit reference design for fast time to market |
Sample & Buy
Part Number | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | Unit Price (US$)
* | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
---|
STC3115AIQT | UFDFPN 2X3 10L | Tape And Reel | -40 | 85 | - | - | NEC | EAR99 | - |
STC3115AIJT | Chip Scale Package 0.4mm pitch | Tape And Reel | -40 | 85 | - | - | NEC | EAR99 | CHINA |
STC3115IJT | Chip Scale Package 0.4mm pitch | Tape And Reel | -40 | 85 | - | - | NEC | EAR99 | CHINA |
STC3115IQT | UFDFPN 2X3 10L | Tape And Reel | -40 | 85 | - | - | NEC | EAR99 | PHILIPPINES |
Quality & Reliability