uPI Semiconductor Corporation today announced the release of the uP8328 Secondary Protection IC, a highly reliable protection solution designed for 2- to 5-series Li-Ion and Li-Polymer battery packs. The uP8328integrates a high-accuracy voltage detection circuit, programmable delay timing, and an on-chip voltage regulator, making it a comprehensive safety component for medium- to high-voltage battery systems.
Engineered for safety-critical and power-intensive applications—such as power tools, mobility, energy storage, industrial equipment, and long-standby IoT systems—the uP8328 delivers exceptional precision, robust protection, and ultra-low power consumption.
Key Features:
High-Accuracy Overcharge Voltage Detection
- Detection range: 50 V to 5.0 V (50 mV steps)
- Accuracy: ±20 mV at 25°C, ±25 mV from 0°C to 60°C
Built-In Delay Timing (No External Capacitor Required)
- Overcharge delay options: 2 s / 4 s / 6 s
- Shutdown output delay options: 2 s / 4 s / 6 s
High Voltage Tolerance for Multi-Cell Designs
- Absolute maximum rating: 36 V
- Operating voltage range: 5 V to 30 V
Ultra-Low Current Consumption
- At 3.8 V per cell: 0 μA max
- At 2.0 V per cell: 7 μA max
Integrated LDO Voltage Regulator
- Output options: 5 V / 3.0 V / 3.3 V (±2% accuracy)
- Maximum output current: 10 mA
- Built-in short-circuit protection
- Reverse current blocking
- Ideal for powering RTCs or low-power MCUs
Filter-Less Technology®
- Stable protection performance under noise
- Reduces MLCC requirements (pad reservation recommended)
Safe Cell Connection Logic (2–5 Series)
- Built-in Power-On Reset
- Connection-order protection to prevent incorrect startup
Target Applications:
The uP8328 is ideal for:
- 2–5 cell Li-Ion/Li-Polymer battery packs
- Power tools and outdoor equipment
- E-bikes, e-scooters, and light mobility devices
- Industrial backup systems and UPS
- Long-standby IoT and embedded systems
- Battery packs requiring onboard LDO power for RTC/MCU support
Its integrated LDO architecture is particularly beneficial for applications requiring a stable low-voltage rail from the same battery pack.
Package & Availability:
- WDFN 2×2-8L compact package
- Samples available now
- Mass-production schedule available through uPI sales representatives
- RoHS compliant and environmentally friendly
With the release of the uP8328, uPI strengthens its position in multi-cell Li-ion safety solutions. By combining precise voltage detection, configurable timing, and an integrated LDO, we enable customers to reduce BOM complexity while enhancing protection and system reliability.