AP9101CAK-ALTRG1

Overview

The AP9101CAK-ALTRG1 is a single-cell lithium-ion or lithium-polymer battery protection IC manufactured by Diodes Incorporated. It integrates high-precision voltage detection circuits to monitor overcharge, overdischarge, and current abnormalities, controlling 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 2.5 V to 4.425 V. It features low power consumption with typical operation currents of 3.0 µA at 3.5 V and 0.01 µA in power-down mode. 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 protection against overcurrent and overvoltage conditions by controlling external MOSFETs.
• Features ultra-low current 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 for lithium-polymer battery systems
• Portable electronic devices requiring integrated battery monitoring

Procurement Notes

Verify the specific suffix 'AL' against the official Diodes Incorporated datasheet to confirm the exact detection voltage thresholds and hysteresis settings. Confirm package availability and RoHS compliance status directly with the manufacturer or authorized distributors, as ordering suffixes define critical electrical parameters.

Selection Notes

Select this component for applications requiring a compact, single-chip solution for 1-cell Li+ battery protection. Ensure the required overcharge and overdischarge detection voltages align with the specific options available under the 'AL' suffix. Verify that the SOT-25-5 package fits the PCB layout constraints and that the operating temperature range meets the environmental requirements.

Part Context

This part belongs to the AP9101C series of battery management ICs designed for single-cell lithium-based batteries. The series offers various pin-compatible packages like SOT-25 and SOT-26 with different detection voltage configurations defined by alphanumeric suffixes. It serves as a cost-effective alternative to discrete protection solutions by integrating detection logic and control functions into a small footprint.

Replacement Considerations

Check for other AP9101C variants with compatible packages and similar detection voltage ranges. Verify if alternative manufacturers offer functionally equivalent single-cell protection ICs with matching pinouts and thermal characteristics.

FAQ

Does the AP9101CAK-ALTRG1 require external capacitors for timing?

No, the AP9101C series includes a built-in fixed time circuit, eliminating the need for external capacitors for standard protection timing.

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

The typical power consumption in power-down mode is 0.01 µA at 3.5 V.