Diodes' AP9101C is a protection solution developed for lithium-ion and lithium-polymer rechargeable batteries with a high-precision voltage detection circuit. Its functions protect batteries by detecting over-charge voltage, over-discharge voltage, over-charge current, over-discharge current, and other abnormalities, and turning off the external MOSFET switch. AP9101C has a built-in fixed time circuit (external capacitors are unnecessary); the protection circuitry can be comprised with fewer external components. The AP9101C is available in industry-standard SOT23-5 and SOT23-6 packages.