Diodes Incorporated AP9214LA-AK-HSB-7

Overview

AP9214LA-AK-HSB-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (RSS(ON) = 13 mΩ typ at VDD = 4.0V), overcharge/overdischarge voltage detection (±25 mV accuracy), discharge overcurrent sensing (±15 mV), and short-circuit protection with 1 μs detection delay. It operates in 1-cell Li+ battery packs for portable power tools and medical devices requiring ultra-low quiescent current (3.0 µA typ in normal mode).

For engineers reviewing the AP9214LA-AK-HSB-7 datasheet, AP9214LA-AK-HSB-7 pinout, AP9214LA-AK-HSB-7 application, or AP9214LA-AK-HSB-7 equivalent, this device supports configurable 0V charge enable, selectable auto-release/latch overcharge mode, and two U-DFN2535-6 (Type B) pin-out options - critical for PCB layout and system-level fault recovery design.

Technical Context

The AP9214LA-AK-HSB-7 implements independent analog comparators for VDD–VSS (battery voltage) and VM–VSS (current-sense voltage), with fixed internal delay timers (tCU = 1.0 s typ, tSHORT = 1.0 μs typ) and ±20% tolerance. Its logic circuit controls gate drive to dual N-MOSFETs sharing a common drain (EP pad), enabling bidirectional current path isolation without external FET drivers.

It features factory-configurable options: Power-down mode disabled (auto-wake-up), overcharge protection set to auto-release, and 0V battery charging enabled. The VM pin interfaces via external R2 (2.7 kΩ typical) to sense charge/discharge current polarity and magnitude, while VDD connects through R1 (330–470 Ω) for supply stabilization.

Key Specifications

Pinout & Package

AP9214LA-AK-HSB-7 uses the U-DFN2535-6 (Type B) package with Pin-Out Option 1: S1–VSS–VDD–NC–S2–VM–EP (top view). The exposed thermal pad (EP) serves as the common drain for both MOSFETs and must be connected 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-8261AAB-M6T1U and RP506K000B-TR-F, the AP9214LA-AK-HSB-7 delivers lower conduction loss, built-in charger overvoltage protection, and auto-wake-up recovery - making it optimal for compact, safety-critical, and field-deployed Li+ systems where reliability and integration density are prioritized.

Availability

AP9214LA-AK-HSB-7 is available at Aetrix Electronics and suitable for power tools, medical wearables, Bluetooth headsets, and portable diagnostic scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for AP9214LA-AK-HSB-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 company specializing in discrete, analog, and mixed-signal ICs, with manufacturing certified to IATF 16949 and product qualification per AEC-Q100/101 standards.

The AP9214L series targets cost-sensitive, high-volume 1-cell Li+ battery protection applications - emphasizing integration, ultra-low power, and robust fault response without external passive components.

FAQ

What is the function of the VM pin in AP9214LA-AK-HSB-7?

The VM pin serves as the bidirectional current-sense input: voltage between VM and VSS indicates discharge current magnitude/direction, while voltage between VM and VDD monitors charger overvoltage. It interfaces with an external resistor (R2 = 2.7 kΩ typical) to generate the sense voltage, enabling detection of charge overcurrent, discharge overcurrent, and short circuits without shunt resistors.

Does AP9214LA-AK-HSB-7 support 0V battery charging, and how is it enabled?

Yes - the "A" suffix in AP9214LA denotes factory-configured 0V battery charge enable. When battery voltage is 0 V, the IC permits charging once VDD reaches ≥1.2 V (V0CHA), bypassing typical under-voltage lockout. This feature is permanently set during wafer sort and cannot be modified in-circuit.

How does the auto-wake-up mode differ from power-down mode in this device?

Auto-wake-up (enabled in AP9214LA) keeps internal circuitry active during overdischarge, allowing recovery when battery voltage rises above VDU (>2.7 V). Power-down mode (AP9214L) shuts down logic and reduces current to ≤0.1 µA, requiring external charger connection to exit overdischarge - no autonomous wake-up occurs.

Can AP9214LA-AK-HSB-7 be used in 2-cell or multi-cell battery packs?

No - it is strictly designed for 1-cell Li+ applications (VDD–VSS range up to 5.5 V). For 2-cell or higher configurations, discrete protection ICs or multi-cell controllers (e.g., AP9221) are required, as AP9214LA lacks cell-balancing circuitry and cannot monitor inter-cell voltage differentials.