AP9101CAK-BZTRG1

Overview

The AP9101CAK-BZTRG1 is a single-chip protection IC designed for one-cell lithium-ion or lithium-polymer rechargeable battery packs. 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 2.5 V to 4.425 V. It features low power consumption with a typical operating current of 3.0 µA at 3.5 V and a power-down mode current of 0.01 µA. The component is housed in a 5-pin SOT-25 surface-mount package and functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates high-precision voltage detection for overcharge, overdischarge, and current protection without requiring external timing capacitors.
• Controls external MOSFET switches to isolate the battery during fault conditions such as overcurrent or abnormal voltage levels.
• Offers ultra-low power consumption with dedicated power-down mode to minimize standby drain in portable applications.

Applications

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

Procurement Notes

Verify the specific suffix BZ against the manufacturer's official datasheet to confirm the exact overcharge detection voltage threshold, as suffixes often denote precision variations. Ensure the ordering configuration matches the required SOT-25 package and reel quantity specifications. Confirm RoHS compliance status directly with Diodes Incorporated documentation prior to final procurement decisions.

Selection Notes

Select this component when designing protection for single-cell Li-ion or Li-Po systems requiring minimal external components. The built-in fixed time circuit eliminates the need for external capacitors, simplifying the bill of materials. Ensure the application voltage stays within the 1.5 V to 5.5 V operating range and that the thermal environment remains between -40°C and +85°C for reliable operation.

Part Context

This part belongs to the AP9101C series of battery management ICs from Diodes Incorporated. The series provides integrated solutions for protecting rechargeable batteries by detecting electrical faults. The AP9101CAK-BZTRG1 variant specifically utilizes the SOT-25-5 package, distinguishing it from other series members that may use SOT-26 or different pin configurations.

Replacement Considerations

Check for direct substitutes within the AP9101C family, such as AP9101CAK-CATRG1 or AP9101CAK-CETRG1, which share similar SOT-25 packaging and core functionality but may differ in detection voltage thresholds or hysteresis settings defined by their specific suffixes.

FAQ

Does the AP9101CAK-BZTRG1 require external capacitors for timing?

No, the device includes a built-in fixed time circuit, eliminating the need for external capacitors for standard protection timing functions.

What is the typical current consumption in power-down mode?

The typical current consumption in power-down mode is 0.01 µA at +25°C.