Diodes Incorporated

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Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

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AP9101C (Not Recommended for new design)

NRND = Not Recommended for New Design

Li+ Battery Protection IC for Single Cell Pack

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The AP9101C is a protection IC designed with high precision voltage detection circuit.

The AP9101C provides a function to protect batteries by detecting overcharge voltage, overdischarge voltage, overcharge current, overdischarge current and other abnormalities and turning off the external MOSFET switch.

The AP9101C also has a built-in fixed time circuit (external capacitors are unnecessary), the protection circuitry can be comprised with fewer external components.


  • Low Current Consumption (+25°C)
  • Operation Mode: 3.0µA Typ. VDD = 3.5V
  • Power-Down Mode: 0.01µA Typ.
  • High-Accuracy Voltage Detection Circuit (+25°C)
  • Overcharge Detection Voltage: 3.5V to 4.5V (5mV Steps) Accuracy ±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: 0.05V to 0.32V (10mV Steps) Accuracy ±15mV
  • Short Current Detection Voltage: 0.45V to 0.7V (50mV Steps) Accuracy ±100mV
  • Charge Overcurrent Detection Voltage: -0.2V to -0.05V (10mV Steps) Accuracy ±15mV
  • 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 can be Selectable: Available/Unavailable
  • 0V Battery Charge Function can be Selectable: Available/Unavailable
  • Overcharge Protection Mode can be Selectable: Release/Latch
  • High-Voltage CMOS Process: Up to 30V between VDD and VM Pins


  • Lithium-Ion Battery Packs
  • Lithium Polymer Battery Packs
  • Smartphones

Product Specifications

Product Parameters

0V Battery Charge Function Permission
Application 1-Cell
Compliance (Only Automotive supports PPAP) Standard
Built-In Dual NMOS (Y|N) No
Charge Overcurrent Detection Voltage VCOC (V) 0.2 to 0.05
Detection Delay Built-In Delay Timer
Discharge Overcurrent Detection Voltage VDOC (V) 0.05 to 0.32
Function Battery Protection
Load Short Detection Voltage VSHORT (V) 0.16 to 0.32
Overcharge Detection Voltage VCU (V) 3.5 to 4.5
Overdischarge Detection Voltage VDL (V) 2 to 3.4
Power-Down Function Selectable
AEC Qualified No
RSS(ON) @VGS=3.9V (mΩ) -

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Technical Documents

Recommended Soldering Techniques


Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2642 2023-09-05 2024-03-05 Device End of Life (EOL)