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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.

Application

  • Li+ Rechargeable Battery Pack

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)

Product Specifications

Product Parameters

Qualified to AECQ10x No
Automotive Compliant PPAP No
Function Battery Protection
Application 1-Cell
Built-In Dual NMOS Yes Y/N
RSS(ON) @VGS=3.9V 120 mΩ
Overcharge Detection Voltage VCU N/A V
Overdischarge Detection Voltage VDL 2 to 3.4 V
Discharge Overcurrent Detection Voltage VDOC 0.03 to 0.19 V
Charge Overcurrent Detection Voltage VCOC 0.019 to 0.03 V
Load Short Detection Voltage VSHORT 0.16 to 0.32 V
Power-Down Function Selectable
Detection Delay Built-In Delay Timer
0V Battery Charge Function Permission

Technical Documents

Recommended Soldering Techniques

TN1.pdf

RoHS CofC

Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AP9221SA-CC-HAC-7 Digi-Key Electronics 2844 9/29/2020 Buy Now United States
AP9221SA-CC-HAC-7 Mouser Electronics Inc. 1410 9/29/2020 Buy Now United States