描述 Description

The AP9221 is a single chip protection solution specially designed for 1-cell Li+ rechargeable battery pack application. 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, over discharge voltage/current, or load short circuit. The AP9221 has builtin fixed delay time to save external components. The AP9221 is available in the U-DFN2030-6 (Type C) package.

特性 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)

應用 Application

? Li+ Rechargeable Battery Pack