Diodes Incorporated AP9101CAK-ANTRG1

Overview

AP9101CAK-ANTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.225V ±25mV, overdischarge detection at 3.200V ±35mV, discharge overcurrent detection at 0.060V ±15mV, short-circuit detection at 0.450V ±100mV, and built-in fixed delay timing. It controls external N-channel MOSFETs via DO and CO pins to protect against voltage, current, and thermal faults in portable power tools and medical devices.

For engineers reviewing the AP9101CAK-ANTRG1 datasheet, AP9101CAK-ANTRG1 pinout, AP9101CAK-ANTRG1 application, or AP9101CAK-ANTRG1 equivalent, this device supports selectable 0V battery charging and power-down mode, integrates high-voltage CMOS process (30V VDD–VM), and delivers ultra-low 3.0µA typical operating current - critical for long-life battery management in space-constrained designs.

Technical Context

The AP9101CAK-ANTRG1 implements independent analog comparators with precision reference circuits to monitor VDD–VSS (cell voltage) and VM–VSS (current-sense voltage), triggering protection actions through dedicated logic-controlled gate drivers. Its internal delay timers (tCU, tDL, tDOC, tSHORT, tCOC) are fixed-value RC-based circuits with ±20% accuracy at +25°C and ±40% across –40°C to +85°C.

It supports dual protection modes: auto-release overcharge (VCL = 4.025V) and configurable overdischarge release (VDU = 3.400V), while enabling 0V battery charge initiation at ≥1.2V charger input. The VM pin interfaces directly to the sense resistor between P– and battery cathode, with internal RVMD (300kΩ typ) and RVMS (30kΩ typ) pull-up/pull-down resistors activated selectively per fault state.

Key Specifications

Pinout & Package

AP9101CAK-ANTRG1 is packaged in SOT26 (5-pin, 1.6mm × 2.9mm × 1.1mm), with pin 1 marked and NC on pin 4. The package supports reflow soldering per JEDEC J-STD-020 and is fully RoHS-compliant and halogen-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar battery protection applications.

Compared with R5640T232AA-TR and SE9101A-232F, AP9101CAK-ANTRG1 uniquely combines factory-configurable thresholds (VDL=3.200V, VDU=3.400V), 0V charge enable, and 30V VDD–VM tolerance - making it optimal for ruggedized, field-deployable 1S systems needing autonomous recovery and charger fault immunity.

Availability

AP9101CAK-ANTRG1 is available at Aetrix Electronics and suitable for power tools, medical wearables, Bluetooth headsets, and portable diagnostic devices requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/Green compliance.

Supply support for AP9101CAK-ANTRG1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in ISO/TS 16949-certified facilities.

The AP9101C series belongs to Diodes' Battery Management Solutions product line, engineered specifically for high-accuracy, low-quiescent-current protection of single-cell Li-ion/Li-polymer batteries in consumer, industrial, and portable medical applications.

FAQ

What is the function of the VM pin in AP9101CAK-ANTRG1?

The VM pin serves as the current-sense input terminal, measuring voltage drop across an external sense resistor (R2) between the battery cathode and P– node. During normal operation, it monitors discharge/charge current magnitude; during fault states, internal resistors (RVMS/RVMD) connect to VSS/VDD to bias VM for accurate threshold comparison and automatic recovery control.

Does AP9101CAK-ANTRG1 require external timing capacitors?

No. AP9101CAK-ANTRG1 integrates fixed-time delay circuits for all protection functions (overcharge, overdischarge, overcurrent, short-circuit), eliminating the need for external timing capacitors. This reduces component count, PCB area, and calibration variability - confirmed in DS37771 Rev. 8 Section 7.2 and Typical Applications Circuit.

How does the 0V battery charge function operate?

When enabled (factory-set in AP9101CAK-ANTRG1), the 0V charge function allows the IC to activate charging if the charger applies ≥1.2V to VDD while the battery voltage is 0V. This bypasses standard under-voltage lockout, enabling recovery of deeply self-discharged cells without external circuitry or manual reset.

What is the maximum allowable voltage between VDD and VM pins?

The absolute maximum rating between VDD and VM is 30V, per DS37771 Rev. 8 Absolute Maximum Ratings table. This enables robust operation with high-voltage chargers and transient suppression, provided VDD remains within its 1.5V–5.5V operating range and VM is referenced to VSS through the sense resistor.