Diodes Incorporated
U DFN2535 6

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AP9234L (Not Recommended for new design)

NRND = Not Recommended for New Design

High Accuracy Single Chip solution for 1-cell Battery Pack

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The AP9234L family is a single chip protection solution specially designed for 1-cell Li+ rechargeable battery pack application.

The AP9234L includes a 1-cell high accuracy Lion battery protection chip and dual N-CH, ultra low RSS(ON) MOSFET with common drain.

The AP9234L 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. AP9234L has built-in fixed delay time to save external components.

The AP9234L integrated highly accurate detection circuits and can compensate according to internal MOSFET Rsson performance to ensure extremely high charge/discharge current accuracy under both room and full temperature.

AP9234L is available in U-DFN2535-6 package.


  • High Voltage CMOS Process, up to 24V (VDD to VM)
  • Low Quiescent Current (+25°C ) In Normal Mode, 3.0µA (Typ), 4.5µA (Max)
  • High Accuracy Voltage Detection (+25°C )
  • Overcharge Detection Voltage: 3.5V to 4.5V (5mV/step) -15mV, +25mV
  • Overcharge Release Voltage: 3.4V to 4.4V (50mV/step) ±50mV
  • Overdischarge Detection Voltage: 2.0V to 3.4V (10mV/step) ±35mV
  • Overdischarge Release Voltage: 2.7V to 3.4V (40mV/step) ±65mV (No Power-Down Mode)
  • Discharge Overcurrent Detection Voltage: 0.05V to 0.32V (10mV/step) ±12mV
  • Short Current Detection Voltage: 0.45V to 0.7V (50mV/step) ±50mV
  • Charge Overcurrent Detection Voltage: -0.20V to -0.05V (10mV/step) ±12mV
  • Overcharger Detection Voltage: 8.0V (fixed) ±2.0V
  • Overcharger Release Voltage: 7.3V (fixed) ±2.0V
  • High Accuracy Current Detection (+25°C ) Charge/Discharge Current Limit: ±2A
  • Built-In Delay Time (+25°C ), Accuracy ±20%
  • Auto-Wake-Up Function (No Power-Down)
  • 0V Battery Charge Selectable (Permission or Inhibition)
  • Overcharge Protection Mode Selectable (Auto Release or Latch)


  • Lithium-Ion Battery Packs
  • Lithium Polymer Battery Packs

Product Specifications

Product Parameters

0V Battery Charge Function Permission
Application 1-Cell
Compliance (Only Automotive supports PPAP) Standard
Built-In Dual NMOS (Y|N) N/A
Charge Overcurrent Detection Voltage VCOC (V) 0.019 to 0.03
Detection Delay Built-In Delay Timer
Discharge Overcurrent Detection Voltage VDOC (V) 0.03 to 0.19
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 N/A
AEC Qualified No
RSS(ON) @VGS=3.9V (mΩ) 13.5

Related Content



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)


Related Application FAQs