AP9101CAK-BUTRG1

Overview

The AP9101CAK-BUTRG1 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, automatically controlling 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 detection voltages from 2.5 V to 4.425 V. It features low power consumption with typical operating currents of 3.0 µA and power-down currents 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-precision voltage detection for overcharge and overdischarge protection without requiring external timing capacitors.
• Provides comprehensive fault management including overcurrent and overvoltage detection with automatic external MOSFET control.
• Optimized for minimal power drain with ultra-low standby current consumption in both active and power-down modes.

Applications

• Protection circuits for single-cell lithium-ion portable electronic devices
• Battery management systems for lithium-polymer consumer electronics
• Power protection modules for mobile communication equipment

Procurement Notes

Verify the specific suffix code against the manufacturer datasheet to confirm exact detection voltage thresholds and hysteresis settings. Confirm package availability and lead times directly with Diodes Incorporated or authorized distributors, as inventory levels fluctuate. Ensure compliance with RoHS and REACH regulations relevant to your region before finalizing procurement orders.

Selection Notes

Select this component when designing compact battery protection circuits that require minimal external components. The integrated fixed-time circuit eliminates the need for external capacitors, reducing board space. Ensure the required detection voltage falls within the supported range of 2.5 V to 4.425 V. Verify that the SOT-25-5 package fits the thermal and spatial constraints of the target application.

Part Context

This part belongs to the AP9101C series of battery management ICs from Diodes Incorporated. The series focuses on providing robust protection for single-cell Li-ion and Li-Po batteries. Variants within the series differ primarily by package type (SOT-25 or SOT-26) and specific voltage detection parameters defined by alphanumeric suffixes.

FAQ

Does the AP9101CAK-BUTRG1 require external capacitors for timing?

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

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

The typical current consumption in power-down mode is 0.01 µA at +25°C with a 3.5 V supply.