XB5307H

The XB5307H is a highly integrated protection solution for single-cell Li-ion/Li-polymer rechargeable battery packs. It integrates an advanced power MOSFET, high-precision voltage detection circuit, and delay circuit. The SOT23-6 package with only one external component minimizes the battery protection circuit footprint, making it ideal for space-constrained rechargeable battery pack applications. It provides all required battery protection functions, including overcharge, overdischarge, overcurrent, overtemperature, and short circuit protection, with very low operating power consumption. This IC is suitable for a wide range of information products requiring long-duration power supply from Li-ion or Li-polymer rechargeable batteries. The XB5307H monitors the voltage and current of a battery and protects it from being damaged due to overcharge voltage, overdischarge voltage, overdischarge current, and short circuit conditions by disconnecting the battery from the load or charger. These functions are required in order to operate the battery cell within specified limits. The device requires only one external capacitor. The MOSFET is integrated and its RSS(ON) is as low as 40 mΩ typical.

Applications

• Single-cell lithium-ion battery
• Lithium polymer battery

Key features

• Charger reverse connection protection
• Battery reverse connection protection
• Integrated advanced power MOSFET with equivalent 40 mΩ on-resistance
• SOT23-6 package
• Single external capacitor
• Over-temperature protection
• Overcharge current protection
• 2-level overcurrent protection
• Overdischarge current 1
• Load short-circuit current
• Charger detection function
• 0 V battery charging function
• Internal delay time setting
• High-accuracy voltage detection
• Low quiescent current
• Active mode: 2.8 μA typical
• Overdischarge mode: 1.5 μA typical
• RoHS compliant and lead-free