Description

The AP9221 is a single-chip protection solution specially designed for 1-cell Li+ rechargeable battery pack applications.
The AP9221 includes a 1-cell Lithium ion battery protection chip and dual N-CH MOSFET with common drain.
The AP9221 provides rich battery protection features and can turn-off the N-CH MOSFET by detecting overcharge voltage/current, overdischarge voltage/current, or load short circuit. The AP9221 has built-in fixed delay time to save external components.
The AP9221 is available in the U-DFN2030-6 (Type C) package.

Features

• High Voltage CMOS Process, up to 24V (VDD to VM)
• Low Quiescent Current (+25°C)
• In Normal Mode, 3.0μA (Typ.), 4.5μA (Max.) VDD = 3.5V
• In Power-Down Mode, 0.1μA (Max.)
• High-Accuracy Voltage Detection Circuit (+25°C)
• Overcharge Detection Voltage: 3.5V to 4.5V (5mV Steps) Accuracy-15mV, +25mV
• Overcharge Hysteresis Voltage Range: 0.1V to 0.4V (50mV Steps) Accuracy ±50mV
• Overdischarge Detection Voltage: 2.0V to 3.4V (10mV Steps) Accuracy ±35mV
• Overdischarge Hysteresis Voltage Range: 0V to 0.7V (40mV Steps) Accuracy ±65mV
• Discharge Overcurrent Detection Voltage: 0.025V to 0.2V (10mV Steps) Accuracy ±12mV
• Short Current Detection Voltage: 0.12V to 0.45V (50mV Steps) Accuracy ±50mV
• Charge Overcurrent Detection Voltage: -0.2V to -0.025V (10mV Steps) Accuracy ±12mV
• Overcharger Detection Voltage: 8.0V (Fixed) Accuracy ±2V
• Overcharger Release Voltage: 7.3V (Fixed) Accuracy ±2V
• Built-In Fixed Detection Delay Time (+25°C), Accuracy ±20%
• Power-Down Mode Selectable (Yes or No)
• 0V Battery Charge Selectable (Permission or Inhibition)
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen- and Antimony-Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative.
https://www.diodes.com/quality/product-definitions/

Applications
• Li+ Rechargeable Battery Packs