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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.


  • Lithium-Ion Battery Packs
  • Lithium Polymer Battery Packs


  • 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)

Product Specifications

Product Parameters

Qualified to AECQ10x No
Automotive Compliant PPAP -
Function Battery Protection
Application 1-Cell
Built-In Dual NMOS - Y/N
RSS(ON) @VGS=3.9V 13.5 mΩ
Overcharge Detection Voltage VCU 3.5 to 4.5 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 -
Detection Delay Built-In Delay Timer
0V Battery Charge Function Permission

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Quality & Reliability

Technical Documents

Recommended Soldering Techniques
Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AP9234LA-AO-HSB-7 Arrow Electronics 730 7/23/2019 Buy Now Americas
AP9234LA-AO-HSB-7 Mouser Electronics Inc. 2934 7/23/2019 Buy Now Americas
AP9234LA-AO-HSB-7 Digi-Key Electronics 2505 7/22/2019 Buy Now Americas


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