AP9101CAK-BSTRG1

Overview

The AP9101CAK-BSTRG1 is a single-cell lithium-ion and lithium-polymer battery protection IC manufactured by Diodes Incorporated. It integrates high-precision voltage detection circuits to monitor overcharge, overdischarge, overcharge current, and overdischarge conditions, activating external MOSFET switches for protection. The device operates within a supply voltage range of 1.5 V to 5.5 V and supports output voltages from 3 V to 4.28 V. It features low power consumption with typical operation current of 3 µA at 3.5 V and power-down current of 0.01 µA. The component is housed in an SOT-26-6 surface-mount package and functions reliably across a temperature range of -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 protection against overcurrent and overvoltage conditions by controlling external MOSFETs.
• Achieves ultra-low power consumption in both active operation and power-down modes to preserve battery life.

Applications

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

Procurement Notes

Verify the specific suffix 'BSTRG1' against the manufacturer's official datasheet to confirm the exact overcharge detection voltage threshold and hysteresis settings, as these parameters vary significantly across the AP9101C series. Ensure compatibility with the target system's operating voltage range and confirm that the SOT-26-6 package aligns with the PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when designing for single-cell Li-ion or Li-Po batteries requiring integrated protection with minimal external components. Consider the specific voltage detection thresholds associated with the 'BS' suffix variant to ensure they match the battery cell specifications. Evaluate the thermal performance within the -40°C to +85°C operating range and verify that the low standby current meets the system's power budget constraints.

Part Context

This part belongs to the AP9101C series of battery management ICs designed for single-cell applications. The series offers various voltage detection configurations through different ordering suffixes, allowing designers to tailor protection levels to specific battery chemistries. The AP9101CAK-BSTRG1 represents a specific configuration within this family, optimized for particular voltage thresholds while maintaining the standard low-power architecture and SOT-26 packaging common to the series.

Replacement Considerations

Direct substitutes may include other AP9101C variants with matching voltage thresholds, such as AP9101CK6-BSTRG1, provided the pinout and package dimensions are identical. Cross-reference the specific detection voltages and hysteresis values in the official datasheets to ensure functional equivalence. Verify that any alternative component maintains the same operating temperature range and power consumption characteristics.