AP9101CAK-BTTRG1

Overview

The AP9101CAK-BTTRG1 is a single-chip protection IC designed 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, activating external MOSFET switches to isolate the battery during faults. 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 operation current of 3.0 µA at +25°C and standby current of 0.01 µA. 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-accuracy voltage detection for overcharge and overdischarge protection without requiring external timing capacitors
• Provides comprehensive fault management including overcurrent and overvoltage detection with built-in fixed-time delay circuits
• Achieves ultra-low power consumption suitable for portable applications with microampere-level operating and standby currents

Applications

• Single-cell lithium-ion battery pack protection
• Lithium-polymer rechargeable battery management systems
• Portable electronic devices requiring compact battery safety solutions

Procurement Notes

Verify the specific suffix BTTRG1 against official Diodes Incorporated documentation to confirm pinout configuration and electrical parameters. Ensure compatibility with target PCB footprint and thermal requirements. Confirm RoHS compliance status through manufacturer datasheets or environmental declarations prior to integration into production designs.

Selection Notes

Select this component when designing protection circuits for single-cell Li-ion or Li-polymer batteries requiring minimal external components. The integrated fixed-time circuit eliminates the need for external capacitors, reducing bill of materials and board space. Verify that the required detection voltages fall within the adjustable ranges supported by the specific suffix variant.

Part Context

This part belongs to the AP9101C series of battery management ICs from Diodes Incorporated. The series provides complete protection solutions for single-cell lithium-based batteries. Variants within the series differ primarily in packaging options and specific detection parameter configurations, allowing designers to choose based on spatial constraints and precise voltage threshold requirements.

Replacement Considerations

Consult official Diodes Incorporated substitution guides for verified alternatives. Cross-reference compatible parts such as other AP9101C variants with matching SOT-25 packages. Ensure functional equivalence in detection thresholds and package dimensions before replacing.