AP9101CAK-BYTRG1

Overview

The AP9101CAK-BYTRG1 is a single-chip protection IC designed for lithium-ion and lithium-polymer rechargeable battery packs. 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 capacitors, simplifying the design with fewer components. The IC operates within a supply voltage range of 1.5 V to 5.5 V and supports output voltages from 2.4 V to 4.5 V.

Feature Summary

• Provides comprehensive battery protection by detecting abnormal voltage and current states in single-cell lithium-based packs.
• Integrates a fixed time delay circuit internally, removing the requirement for external timing capacitors.
• Offers high-accuracy voltage detection capabilities with configurable hysteresis ranges for precise threshold management.

Applications

• Protection circuits for single-cell lithium-ion battery packs
• Safety management systems for lithium-polymer rechargeable batteries
• Portable electronic devices requiring integrated cell monitoring

Procurement Notes

Verify the specific suffix BY against official Diodes Incorporated documentation to confirm exact detection thresholds and package variants. Confirm RoHS compliance status and lead times through authorized distributors. Ensure the selected variant matches the required operating temperature range and packaging format for the target assembly process.

Selection Notes

Select this component when designing compact battery protection schemes that require minimal external parts. The internal fixed-time circuit reduces bill-of-materials complexity compared to solutions requiring external RC networks. Ensure the external MOSFET selection aligns with the IC's drive capabilities and the expected load currents of the application.

Part Context

This part belongs to the AP9101C series of battery management ICs from Diodes Incorporated. The series focuses on providing robust protection for single-cell lithium batteries using a highly integrated approach. The AP9101C family is characterized by low power consumption and high detection accuracy, making it suitable for space-constrained portable applications.

Replacement Considerations

Check for direct pin-compatible alternatives within the AP9101 series or other single-cell Li-ion protectors from Diodes Incorporated. Verify that any substitute maintains the same SOT-26 or SOT-25 footprint and electrical characteristics if cross-referencing is necessary.

FAQ

Does the AP9101CAK-BYTRG1 require external capacitors for its protection timing?

No, the device includes a built-in fixed time circuit, which eliminates the need for external capacitors typically used for setting delay times in similar protection ICs.

What types of battery chemistries is this IC designed to protect?

The AP9101CAK-BYTRG1 is specifically developed for protecting lithium-ion (Li+) and lithium-polymer (Li-Po) rechargeable battery cells.