AP9101CAK-BKTRG1

Overview

The AP9101CAK-BKTRG1 is a single-chip protection IC developed 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 turning off external MOSFET switches upon fault detection. 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 current consumption of 3 µA in operation mode and 0.01 µA in power-down mode. The component 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 without requiring external timing capacitors
• Monitors overcharge and overdischarge currents to trigger automatic shutdown of external MOSFET switches during abnormal conditions
• Operates with minimal quiescent current to preserve battery life in standby or power-down states

Applications

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

Procurement Notes

Verify the specific suffix BK against the manufacturer's official datasheet to confirm the exact overcharge detection voltage threshold, as variations exist within the AP9101C series. Confirm RoHS compliance status and lead times directly with Diodes Incorporated or authorized distributors, as availability may vary by region. Ensure the ordering documentation matches the required package type and temperature rating for your specific application environment.

Selection Notes

Select this component when designing protection circuits for single-cell Li-ion or Li-Po batteries that require integrated fault detection without complex external timing components. Consider the SOT-25-5 package size constraints and the operating temperature range of -40°C to +85°C. Verify that the external MOSFETs selected are compatible with the drive capabilities of the AP9101CAK-BKTRG1 output pins.

Part Context

The AP9101CAK-BKTRG1 belongs to the AP9101C family of battery management ICs manufactured by Diodes Incorporated. This series is designed specifically for single-cell applications, offering a compact solution for battery protection. The part number indicates the specific package variant (SOT-25) and the manufacturing traceability code associated with Diodes Incorporated's production lines.

Replacement Considerations

Direct substitutes within the same family include AP9101CAK-AITRG1 and AP9101CAK-BFTRG1, provided their specific detection voltage thresholds match the design requirements. Verify pin compatibility and thermal performance before substitution.