AP9101CAK-AYTRG1

Overview

The AP9101CAK-AYTRG1 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, activating external MOSFET switches to isolate the battery during faults. The device features a built-in fixed-time circuit that eliminates the need for external capacitors, simplifying the design. It 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. Typical quiescent current is 3 µA in operation mode.

Feature Summary

• Provides comprehensive battery protection against overcharge, overdischarge, and excessive current conditions by controlling external MOSFETs.
• Integrates a high-accuracy voltage detection circuit with configurable thresholds for precise monitoring of cell status.
• Includes a built-in fixed-time delay circuit to prevent false triggering without requiring external timing components.

Applications

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

Procurement Notes

Verify the specific suffix 'AY' against the manufacturer's official datasheet or ordering guide to confirm the exact detection voltage thresholds and hysteresis settings. Ensure the SOT-25-5 package variant matches the target PCB footprint. Confirm RoHS compliance status and check for any recent product change notifications regarding manufacturing site or material updates before finalizing procurement.

Selection Notes

Select this component when a compact, low-power solution is required for single-cell Li-ion or Li-Po battery protection. The integrated timing function reduces bill-of-materials count compared to discrete solutions. Ensure the application environment falls within the specified -40°C to +85°C operating temperature range and that the external MOSFET selection aligns with the current handling capabilities defined in the technical specifications.

Part Context

This part belongs to the AP9101C series of battery management ICs manufactured by Diodes Incorporated. The series is categorized under PMIC - Battery Management products. It serves as a specialized power management solution focused on safety and longevity for portable energy storage systems, distinct from general-purpose charge controllers.

Replacement Considerations

Consult the manufacturer's cross-reference documentation for verified substitutes. Generic equivalents may not match the precise detection accuracy or internal timing characteristics. Verify pinout compatibility and package dimensions if considering alternative manufacturers.