AP9101CAK-BNTRG1

Overview

The AP9101CAK-BNTRG1 is a single-chip protection IC for one-cell lithium-ion or lithium-polymer rechargeable battery packs. It features high-precision voltage detection circuits to monitor overcharge, overdischarge, and current abnormalities, automatically turning off external MOSFET switches when faults occur. The device 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. Key electrical parameters include an overcharge detection voltage of 4.375 V ±25 mV, an overdischarge detection voltage of 2.8 V ±25 mV, and a typical operating current of 3.0 µA at +25°C with a 3.5 V supply. It utilizes a SOT-25-5 surface-mount package.

Feature Summary

• Integrated high-precision voltage detection circuitry for monitoring cell status
• Built-in fixed time circuit eliminates the need for external capacitors
• Automatic control of external MOSFET switches during fault conditions
• Low power consumption in both operation and power-down modes

Applications

• Protection for single-cell lithium-ion battery packs
• Protection for single-cell lithium-polymer battery packs
• Portable electronic devices requiring compact battery management

Procurement Notes

Verify the specific suffix BN against official Diodes Incorporated documentation to confirm exact detection thresholds and package type. Confirm RoHS compliance status through the manufacturer's latest datasheet. Ensure the ordering suffix matches the required reel quantity and tape specifications for your assembly process. Cross-reference the part number with the most recent product change notices to avoid obsolete revisions.

Selection Notes

Select this component for applications requiring a minimal external component count due to its integrated timing functions. Consider the SOT-25-5 package size constraints for PCB layout. Evaluate the ±25mV accuracy requirements against system tolerance needs. Verify that the external MOSFETs selected are compatible with the drive capabilities and voltage ratings supported by the IC.

Part Context

This part belongs to the AP9101C series of battery management ICs designed specifically for single-cell Li-ion and Li-Po batteries. The series offers various packages including SOT-25 and SOT-26, with different detection voltage options defined by alphanumeric suffixes. It serves as a cost-effective solution for basic battery protection without complex communication interfaces.

Replacement Considerations

Check Diodes Incorporated documentation for direct substitutes within the AP9101 series. Verify pinout compatibility and detection voltage alignment before substituting with other manufacturers' parts.