AP9101CAK-CFTRG1

Overview

The AP9101CAK-CFTRG1 is a single-cell lithium-ion or lithium-polymer battery protection IC manufactured by Diodes Incorporated. It integrates high-precision voltage detection circuits to monitor overcharge, overdischarge, and current abnormalities, controlling external MOSFET switches for safety. The device 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. It features low power consumption with typical operating current of 3 µA at 3.5 V and standby current of 0.01 µA. The component functions reliably across an industrial temperature range of -40°C to +85°C and is housed in a compact SOT-26-6 surface-mount package.

Feature Summary

• Integrates high-accuracy voltage detection for overcharge and overdischarge protection without requiring external timing capacitors
• Provides comprehensive fault protection against overcurrent and overvoltage conditions by controlling external MOSFETs
• Features ultra-low power consumption modes including standard operation and deep power-down states

Applications

• Protection circuits for single-cell lithium-ion rechargeable battery packs
• Safety management for lithium-polymer battery systems in portable electronics
• Battery management units requiring minimal external component count

Procurement Notes

Verify the specific suffix CFTRG1 against official Diodes Incorporated documentation to confirm exact detection voltage thresholds and hysteresis settings. Confirm availability status as some variants in this series may be subject to discontinuation notices. Ensure compatibility with target PCB footprint for the SOT-26-6 package during sourcing.

Selection Notes

Select this component for applications requiring precise single-cell battery protection with minimal external circuitry. Consider the fixed internal time delay feature which eliminates the need for external capacitors, reducing bill of materials cost. Verify that the required detection voltage ranges align with the specific battery chemistry and system design constraints.

Part Context

This part belongs to the AP9101C series of battery management ICs designed specifically for single-cell Li+ battery packs. The series is characterized by its ability to detect various abnormal conditions while maintaining a small physical footprint. It serves as a critical safety component in portable devices where battery integrity and user safety are paramount.

Replacement Considerations

Check for direct substitutes within the AP9101C family such as AP9101CK6-ADTRG1 or AP9101CAK-AITRG1, ensuring pinout and electrical specifications match. Verify if alternative manufacturers offer compatible single-cell protection ICs with similar SOT-26 packaging and detection accuracy.