AP9101CAK-CHTRG1

Overview

The AP9101CAK-CHTRG1 is a single-chip protection IC designed for lithium-ion and lithium-polymer rechargeable battery packs. Manufactured by Diodes Incorporated, it integrates high-precision voltage detection circuits to monitor overcharge, overdischarge, and current abnormalities. The device controls external MOSFET switches to isolate the battery during fault conditions. It 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. The component features low current consumption, with typical operation mode current at 3 µA and power-down mode at 0.01 µA. It is housed in an SOT-25-5 surface-mount package and functions reliably across temperatures from -40°C to +85°C.

Feature Summary

• Integrates high-precision voltage detection for overcharge and overdischarge protection
• Includes built-in fixed time circuit eliminating need for external capacitors
• Controls external MOSFET switches to disconnect battery during faults
• Supports low current consumption modes for extended battery life

Applications

• Single-cell lithium-ion battery pack protection
• Lithium-polymer battery management systems
• Portable electronic devices requiring compact battery protection
• Power tools with single-cell battery configurations

Procurement Notes

Verify the specific suffix 'CH' against official Diodes Incorporated documentation to confirm exact detection voltage thresholds and hysteresis values. Ensure compatibility with target PCB footprint for SOT-25-5 packaging. Confirm RoHS compliance status through manufacturer datasheets prior to integration. Cross-reference part number variants to avoid selection errors due to similar naming conventions within the AP9101C series.

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 bill of materials cost by removing external capacitors. Consider the SOT-25-5 package size constraints and thermal dissipation requirements. Verify that the operating temperature range meets application environmental standards. Ensure the control interface aligns with the external MOSFET gate drive capabilities.

Part Context

The AP9101CAK-CHTRG1 belongs to the AP9101C series of battery management ICs from Diodes Incorporated. This family focuses on providing comprehensive protection for single-cell lithium-based batteries in a compact form factor. The series is characterized by its ability to detect multiple fault conditions including overvoltage, undervoltage, and overcurrent scenarios. It represents a solution for applications prioritizing space efficiency and reduced component count in portable electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate other members of the AP9101C series for potential pin-compatible alternatives if specifications match. Consult manufacturer obsolescence notices for end-of-life status before finalizing design.