AP9101CAK-BGTRG1

Overview

The AP9101CAK-BGTRG1 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, automatically controlling external MOSFET switches to isolate the battery during faults. The device features a built-in fixed-time delay circuit, eliminating the need for external capacitors and reducing component count. 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. The IC is available in SOT-25-5 and SOT-26 packages, with an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides comprehensive battery protection by detecting overcharge, overdischarge, and abnormal current conditions to trigger external MOSFET isolation.
• Integrates a fixed-time delay circuit internally, removing the requirement for external timing capacitors and simplifying the bill of materials.
• Features high-accuracy voltage detection capabilities with configurable hysteresis ranges to ensure precise monitoring of cell status.

Applications

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

Procurement Notes

Verify the specific suffix codes against the manufacturer's official datasheet to confirm exact detection voltage thresholds and package variants. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary. Ensure the selected variant matches the required application voltage and current specifications before procurement.

Selection Notes

Select this component when designing protection circuits for single-cell Li-ion or Li-Po batteries requiring minimal external components. The integrated timing function reduces board space and cost compared to discrete solutions. Verify that the external MOSFETs are compatible with the IC's drive capabilities and that the detection thresholds align with the specific battery chemistry requirements.

Part Context

The AP9101C series belongs to Diodes Incorporated's portfolio of power management ICs focused on battery protection. This family addresses the safety needs of portable electronics by offering reliable monitoring of critical battery parameters. The AP9101CAK-BGTRG1 represents a specific configuration within this line, tailored for surface-mount assembly in compact consumer and industrial applications.

Replacement Considerations

Check for direct pin-to-pin replacements within the AP9101C series with different suffixes that offer adjusted detection voltages. Evaluate other single-cell battery protection ICs from Diodes Incorporated or competitors if specific threshold values differ from the standard configurations available in this family.

FAQ

Does the AP9101CAK-BGTRG1 require external capacitors for its protection timing functions?

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

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

The AP9101CAK-BGTRG1 is specifically developed for protecting lithium-ion (Li-ion) and lithium-polymer (Li-Po) rechargeable battery cells.