AP9101CAK-CETRG1

Overview

The AP9101CAK-CETRG1 is a single-chip protection IC for 1-cell lithium-ion or lithium-polymer rechargeable batteries, manufactured by Diodes Incorporated. It integrates high-precision voltage detection to protect against overcharge, overdischarge, and abnormal currents by controlling an external MOSFET. 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 a typical operating current of 3 µA at +25°C with a 3.5 V supply. The component is housed in a SOT-25-5 surface-mount package and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates high-precision voltage detection circuits for monitoring battery status
• Provides comprehensive protection against overcharge, overdischarge, and overcurrent conditions
• Includes built-in fixed-time delay circuits eliminating the need for external capacitors
• Supports low-power operation with minimal current consumption in active and power-down modes

Applications

• Protection circuits for single-cell lithium-ion battery packs
• Safety management for lithium-polymer rechargeable battery systems
• Portable electronic devices requiring compact battery protection solutions
• Consumer electronics utilizing SMD/SMT assembly processes

Procurement Notes

Verify the specific suffix code 'CE' against the official Diodes Incorporated datasheet to confirm the exact overcharge detection voltage and hysteresis settings, as these parameters vary across the AP9101C series. Ensure the SOT-25-5 package footprint matches the design requirements. Confirm RoHS compliance status and check for any obsolescence notices or lifecycle changes directly with the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when designing for single-cell Li-ion or Li-Po batteries requiring integrated protection without external timing capacitors. The SOT-25-5 package offers a compact solution for space-constrained applications. Consider the specific voltage detection thresholds associated with the 'CE' suffix to ensure they align with the target battery chemistry specifications. Evaluate the thermal performance given the 250 mW power dissipation limit in the chosen enclosure environment.

Part Context

The AP9101CAK-CETRG1 belongs to the AP9101C series of battery management ICs from Diodes Incorporated. This family is designed as a complete single-chip solution for protecting 1-cell lithium-based batteries. The series utilizes various suffix codes to denote different electrical characteristics, such as detection voltages and hysteresis levels, while maintaining common core functionalities like low current consumption and internal delay timers across all variants.

Replacement Considerations

Other variants within the AP9101C series, such as AP9101CAK-ACTRG1 or AP9101CAK-AITRG1, may serve as functional substitutes if their specific voltage detection parameters match the application requirements. These alternatives share similar packages and core protection features but differ in precise threshold settings. Verify pin compatibility and electrical specifications before swapping.