Diodes Incorporated AP9214L-AK-HSBR-7

Overview

AP9214L-AK-HSBR-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (RSS(ON) ≤ 16.5 mΩ), overcharge/overdischarge voltage detection (±25 mV accuracy), discharge overcurrent sensing (±15 mV), and short-circuit protection with 1.2 µs response. It operates in 1-cell Li-ion packs for portable power tools, Bluetooth headsets, and medical wearables.

For engineers reviewing the AP9214L-AK-HSBR-7 datasheet, AP9214L-AK-HSBR-7 pinout, AP9214L-AK-HSBR-7 application, or AP9214L-AK-HSBR-7 equivalent, key selection criteria include its U-DFN2535-6 (Type B, Option 2) package, selectable power-down mode, 0V battery charge enable, ±25 mV overcharge voltage accuracy, and integrated dual-MOSFET architecture eliminating external FETs.

Technical Context

The AP9214L-AK-HSBR-7 implements independent analog comparators for VDD–VSS (cell voltage), VM–VSS (discharge current), and VDD–VM (charge voltage), each feeding into logic-controlled delay timers (tCU, tDL, tDOC) with ±20% accuracy. Its internal level-shift circuitry drives both MOSFET gates using a common-drain EP pad.

It supports two operational modes: power-down (0.1 µA standby) requiring charger wake-up, or auto-wake-up (5.5 µA standby) releasing on VDL recovery. The 0V charge function enables recharge of fully depleted cells at ≥1.2 V, while overvoltage charger detection (8.0 V ±2 V) safeguards against faulty chargers.

Key Specifications

Pinout & Package

AP9214L-AK-HSBR-7 uses the U-DFN2535-6 (Type B) package with Pin-Out Option 2: S1/VSS/VDD/VM/S2/NC/EP. The exposed thermal pad (EP) serves as the common drain node for both integrated N-channel MOSFETs and must be soldered to a large copper pour for thermal management.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 1-cell Li+ battery protection applications.

Compared with S-8261AAL-M6T1U, AP9214L-AK-HSBR-7 saves board space and BOM cost via integrated MOSFETs and faster short-circuit response; versus RP506K001B-TR-F, it adds 0V charge capability essential for consumer devices with unpredictable usage patterns.

Availability

AP9214L-AK-HSBR-7 is available at Aetrix Electronics and suitable for power tool battery packs, wireless earbud charging cases, medical wearable sensors, and smart home door lock batteries requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for AP9214L-AK-HSBR-7 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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the US, and ISO/TS 16949-certified wafer fabs.

The AP9214L belongs to Diodes' battery protection IC product line, engineered specifically for space-constrained, high-reliability 1-cell Li+ applications where integration, ultra-low quiescent current, and robust fault response are mandatory.

FAQ

What is the function of the NC pin in AP9214L-AK-HSBR-7?

Pin 4 is designated NC (No Connect) in the U-DFN2535-6 Type B Option 2 pinout. It is internally unconnected and must remain electrically floating-no routing, soldering, or grounding is permitted. This differs from Option 1, where Pin 4 is S2. Using the wrong option risks functional failure due to misrouted S2 signals.

Does AP9214L-AK-HSBR-7 support overvoltage protection on the charger input?

Yes. The device monitors VDD–VM voltage and triggers charging MOSFET shutdown if it exceeds 8.0 V ±2 V (VOVCHG). Release occurs at 7.3 V ±2 V (VOVCHGR), with no programmable delay-this protects against defective or mismatched chargers in USB-PD and proprietary fast-charge systems.

How does the 0V battery charge feature operate in AP9214L-AK-HSBR-7?

The part is factory-configured to permit charging when battery voltage is ≥1.2 V (V0CHA), enabling recovery from deep discharge caused by self-discharge. If the battery reads 0 V, the IC activates the 0V charge path only after detecting ≥1.2 V at VDD, allowing safe trickle recharge without external circuitry.

What thermal design guidance applies to the EP pad?

The EP pad is the common drain node for both MOSFETs and must be soldered to a minimum 25 mm² copper area on the PCB's inner or bottom layer, connected via ≥4 thermal vias (0.3 mm diameter) to internal ground planes. This maintains junction temperature ≤110°C at 6 A continuous discharge in still air.