AP9101CAK-BHTRG1

Overview

The AP9101CAK-BHTRG1 is a single-chip protection IC designed for one-cell lithium-ion or lithium-polymer rechargeable battery packs. It integrates high-precision voltage detection circuits to monitor overcharge, overdischarge, and current abnormalities, controlling external MOSFET switches for safety. The device operates within a supply voltage range of 1.5 V to 5.5 V and supports output voltages from 2.5 V to 4.425 V. Key electrical parameters include an overcharge detection voltage of 4.250 V ±25 mV, with operation temperatures spanning -40°C to +85°C. It features low current consumption of 3.0 µA in operation mode and utilizes SOT-25 surface-mount packaging.

Feature Summary

• Integrates high-precision voltage detection for overcharge, overdischarge, and current protection without requiring external timing capacitors.
• Controls external MOSFET switches to isolate the battery during fault conditions such as overcurrent or overvoltage.
• Features built-in fixed time circuits to simplify protection circuit design by reducing the number of required external components.

Applications

• Single-cell lithium-ion battery pack protection
• Lithium-polymer rechargeable battery management systems
• Portable electronic devices requiring compact battery safety solutions

Procurement Notes

Verify the specific suffix BH against official Diodes Incorporated documentation to confirm exact detection thresholds and package variants. Ensure compatibility with the target PCB footprint for the SOT-25 package. Confirm RoHS compliance status through the manufacturer's latest certification documents before finalizing procurement specifications.

Selection Notes

Select this component when designing protection circuits for single-cell Li-ion or Li-Po batteries requiring minimal external parts. The integrated fixed-time circuit eliminates the need for external capacitors, simplifying layout. Ensure the application voltage range aligns with the 1.5 V to 5.5 V operating specification and that the thermal environment stays within the -40°C to +85°C limit.

Part Context

This part belongs to the AP9101C series of battery management ICs from Diodes Incorporated. The series provides comprehensive protection functions for portable electronics. The AP9101CAK-BHTRG1 variant specifically denotes the SOT-25 package configuration with tape-and-reel packaging, intended for automated surface-mount assembly processes.

Replacement Considerations

Consult official Diodes Incorporated substitution guides for verified equivalents. Generic replacements may not match the precise 25 mV detection accuracy or the specific SOT-25 pinout configuration required for direct board replacement.