AP9101CAK-CATRG1

Overview

The AP9101CAK-CATRG1 is a single-chip battery management IC designed for lithium-ion and lithium-polymer rechargeable batteries. It integrates high-precision voltage detection circuits to protect against overcharge, overdischarge, overcharge current, and overdischarge current by controlling external MOSFET switches. 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 µA at 3.5 V. The component is housed in an 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 for comprehensive protection against overcharge, overdischarge, and abnormal current conditions.
• Includes built-in fixed time circuits that eliminate the need for external capacitors, reducing component count.
• Operates with ultra-low current consumption in both active and power-down modes.

Applications

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

Procurement Notes

Verify the specific suffix CATRG1 against the manufacturer's latest datasheet to confirm exact voltage thresholds and package variations. Confirm RoHS compliance status and lead times directly with Diodes Incorporated or authorized distributors, as availability may vary. Ensure the ordering information matches the required detection voltage steps and hysteresis settings for your design.

Selection Notes

Select this component when designing for single-cell Li-ion or Li-Po applications requiring minimal external components. The SOT-25-5 package suits space-constrained designs. Verify that the required overcharge and overdischarge detection voltages fall within the supported ranges of 2.5 V to 4.425 V. Consider the 3 µA operating current for battery life optimization in standby modes.

Part Context

This part belongs to the AP9101C series from Diodes Incorporated, which offers integrated solutions for single-cell battery protection. The series is characterized by its ability to replace multiple discrete components with a single IC, simplifying PCB layout and improving reliability. It is categorized under PMIC-Battery Management products.

Replacement Considerations

Check for direct substitutes within the AP9101C family, such as variants with different voltage tolerances or packages like SOT-26. Ensure any replacement maintains compatibility with the external MOSFET switching requirements and thermal performance specifications.