750mA SINGLE-CHIP Li-Ion/Li-Pol CHARGE MANAGEMENT IC with Thermal Regulation 10-VSON 0 to 125# BQ24087DRCR Technical Documentation
## 1. Application Scenarios
### Typical Use Cases
The BQ24087DRCR is a highly integrated single-cell Li-ion and Li-polymer battery charger IC with power path management, designed for space-constrained portable applications. Key use cases include:
Portable Medical Devices
- Wearable health monitors requiring continuous operation
- Portable diagnostic equipment with battery backup
- Medical sensors needing simultaneous charge and operation
- Emergency medical devices requiring fast charging capabilities
Consumer Electronics
- Smartphones and tablets with USB charging
- Wireless earbuds and hearables
- Smart watches and fitness trackers
- Portable gaming devices and accessories
Industrial Applications
- Handheld scanners and data collection terminals
- Portable test and measurement equipment
- IoT edge devices with battery backup
- Remote monitoring sensors
### Industry Applications
Medical Industry
- Advantages: Medical-grade reliability, precise charge termination, thermal regulation
- Limitations: Requires additional certification for medical safety standards
- Implementation: Ideal for FDA Class II medical devices with proper isolation
Automotive Accessories
- Advantages: Robust thermal protection, input voltage protection
- Limitations: Not AEC-Q100 qualified for direct automotive use
- Implementation: Suitable for aftermarket accessories, not primary vehicle systems
Consumer Electronics
- Advantages: Small package size (3mm × 3mm QFN), high integration
- Limitations: Maximum 1.5A charge current may be insufficient for high-capacity batteries
- Implementation: Perfect for compact devices with moderate power requirements
### Practical Advantages and Limitations
Key Advantages:
- Integrated Power Path Management : Enables simultaneous charging and system operation
- High Efficiency : Up to 92% efficiency with 1.5A charge current
- Small Form Factor : 10-pin DRC package (3mm × 3mm) saves board space
- Flexible Input Sources : Supports USB and adapter inputs (4.35V to 6.5V)
- Safety Features : Thermal regulation, battery temperature monitoring, safety timer
Notable Limitations:
- Current Limitation : Maximum 1.5A charge current may be insufficient for tablets
- Input Voltage Range : Limited to 6.5V maximum, not compatible with 12V systems
- Package Thermal : Requires proper thermal management at maximum current
- Battery Chemistry : Limited to single-cell Li-ion/Li-polymer only
## 2. Design Considerations
### Common Design Pitfalls and Solutions
Thermal Management Issues
- Pitfall : Overheating during high-current charging in compact enclosures
- Solution : Implement adequate copper pour for thermal dissipation, monitor junction temperature
Input Source Detection Problems
- Pitfall : Incorrect input source detection leading to suboptimal charging
- Solution : Properly configure TS and ISET pins, ensure clean power-on sequencing
Battery Connection Issues
- Pitfall : Poor battery connection detection causing charge termination errors
- Solution : Implement proper battery detection circuitry, use high-quality connectors
### Compatibility Issues with Other Components
Power Management ICs
- Compatible : Most DC-DC converters and LDOs
- Considerations : Ensure system load doesn't exceed available power budget
- Integration : Coordinate enable signals with system power management
Microcontrollers and Processors
- Compatible : Standard 3.3V/1.8V logic interfaces
- Considerations : STAT and PG outputs require proper level shifting if needed
- Integration : Use status indicators for system power management algorithms
USB Interface Components
- Compatible : Standard USB 2.0/3.0 PHY devices
- Considerations : Ensure USB data lines are properly isolated during charging
- Implementation : Follow USB-
