AP9101CAK-BJTRG1

Overview

The AP9101CAK-BJTRG1 is a single-cell battery protection IC designed for lithium-ion and lithium-polymer rechargeable batteries. Manufactured by Diodes Incorporated, it integrates high-precision voltage detection circuits to monitor overcharge, overdischarge, overcharge current, and overdischarge conditions. The device controls external MOSFET switches to isolate the battery during fault events. It features a built-in fixed time circuit that eliminates the need for external timing capacitors, simplifying the design. The component operates within a supply voltage range of 1.5V to 5.5V and supports detection voltages from 2.0V to 4.5V with high accuracy.

Feature Summary

• Integrates high-precision voltage detection for overcharge and overdischarge monitoring
• Includes built-in fixed time circuitry to remove requirement for external capacitors
• Protects against abnormal conditions including overcurrent and overvoltage states
• Designed specifically for single-cell lithium-ion and lithium-polymer battery packs

Applications

• Protection circuits for single-cell lithium-ion battery packs
• Safety management in portable electronic devices
• Battery management systems requiring compact footprint solutions
• Lithium-polymer battery pack protection applications

Procurement Notes

Verify the specific suffix BJTRG1 against official Diodes Incorporated documentation to confirm exact detection voltage thresholds and package variations. Confirm availability status as distribution channels may list obsolete or limited stock items. Ensure compatibility with target PCB layout and external MOSFET selection before procurement.

Selection Notes

Select this component when designing protection for single-cell Li-ion or Li-Po batteries requiring integrated voltage and current monitoring. Consider the SOT-26 package size for space-constrained applications. Verify that the required detection voltage ranges align with the specific battery chemistry characteristics and system safety requirements.

Part Context

This part belongs to the AP9101C series of battery management ICs from Diodes Incorporated. The series focuses on providing comprehensive protection for single-cell rechargeable batteries. It represents a solution for integrating multiple protection functions into a small surface-mount package, reducing bill-of-materials complexity compared to discrete solutions.

Replacement Considerations

Check for direct substitutes within the AP9101 family such as AP9101CAK-AITRG1 or AP9101CK6-CGTRG1. Verify pinout compatibility and electrical parameter alignment before substitution. Consult manufacturer obsolescence notices for alternative recommendations if the specific suffix is discontinued.