Diodes Incorporated AP9214L-AE-HSB-7

Overview

AP9214L-AE-HSB-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (R_DS(ON) = 13 mΩ typ at V_DD = 4.0 V) and precision voltage/current detection circuitry for 1-cell rechargeable battery packs. It provides overcharge (3.5–4.5 V, ±25 mV), overdischarge (2.0–3.4 V, ±35 mV), discharge/charge overcurrent (±15 mV), short-circuit (±100 mV), and overvoltage charger (8.0 V ±2 V) protection with fixed delay timing and 0V charge enable.

For engineers reviewing the AP9214L-AE-HSB-7 datasheet, AP9214L-AE-HSB-7 pinout, AP9214L-AE-HSB-7 application in battery management systems, or AP9214L-AE-HSB-7 equivalent for portable power solutions, this device delivers integrated MOSFET control, ultra-low quiescent current (3.0 µA typ in normal mode), selectable power-down mode, and factory-configurable 0V charge functionality - all in a compact U-DFN2535-6 (Type B) package.

Technical Context

The AP9214L-AE-HSB-7 implements dual independent protection paths: one for charging (controlled via S2/VM/VDD) and one for discharging (controlled via S1/VM/VSS), each with dedicated voltage thresholds and delay timers. Its internal logic uses high-accuracy comparators with ±25 mV overcharge detection tolerance and ±15 mV overcurrent sensing resolution to trigger MOSFET gate shutdown without external components.

It features two pin-out options (Option 1: NC on Pin 5; Option 2: NC on Pin 4), both sharing the same U-DFN2535-6 (Type B) thermally enhanced package with exposed drain pad (EP). The device supports selectable overcharge release behavior (auto-release or latch) and includes built-in RVMD/RVMS pull-up/pull-down resistors (300 kΩ typ) for VM-sense line biasing during fault recovery.

Key Specifications

Pinout & Package

AP9214L-AE-HSB-7 is housed in a 2.5 mm × 3.5 mm U-DFN2535-6 (Type B) package with exposed thermal pad (EP) serving as common drain for both integrated N-channel MOSFETs. Pin-out Option 1 (HSB) places NC on Pin 5; Pin 4 is VM. This configuration matches the standard layout used in compact battery pack PCBs requiring minimal footprint and optimal thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S-8261AxxA and RP506KxxA, the AP9214L-AE-HSB-7 delivers lower system-level component count, faster short-circuit response (1 µs vs. ≥10 µs), and guaranteed 0V charge recovery - making it optimal for space-constrained, safety-critical, and long-shelf-life applications where integration and reliability outweigh discrete flexibility.

Availability

AP9214L-AE-HSB-7 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headphone charging cases, medical portable monitors, and IoT asset trackers requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for AP9214L-AE-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 emphasis on power management, protection, and signal integrity solutions for industrial, computing, and consumer markets.

The AP9214L belongs to Diodes' battery protection IC product line, engineered specifically for high-reliability, low-footprint 1-cell Li+ applications where integrated MOSFETs, precision voltage thresholds, and ultra-low quiescent current are essential design requirements.

FAQ

What is the maximum continuous discharge current supported by AP9214L-AE-HSB-7?

The AP9214L-AE-HSB-7 supports 9.0 A continuous discharge current at +25°C with V_GS = 4.5 V, derating to 7.1 A at +70°C. This rating assumes proper PCB copper area under the EP pad for thermal dissipation and operation within the recommended 1.5–5.5 V V_DD range. Exceeding these conditions risks thermal shutdown or permanent damage.

Does AP9214L-AE-HSB-7 require external passive components for basic protection operation?

Yes - two external resistors are mandatory: R1 (330–470 Ω) between VDD and battery positive to limit inrush current and stabilize supply, and R2 (300–4 kΩ, typically 2.7 kΩ) between P− and VM to convert charge/discharge current into a measurable voltage. A 100 nF bypass capacitor (C1) on VDD is also required for noise immunity per the datasheet.

How does the power-down mode affect recovery from overdischarge?

In power-down mode (enabled by AE suffix), the AP9214L-AE-HSB-7 enters ultra-low-current sleep (<0.1 µA) when overdischarged and will not auto-wake. Recovery requires connecting an external charger to raise battery voltage above V_DL while VM is pulled low via R2. Without charger connection, the battery remains isolated until manually recharged.

Can AP9214L-AE-HSB-7 be used with 2-cell or higher battery configurations?

No - the AP9214L-AE-HSB-7 is strictly rated for 1-cell Li+ applications with V_DD up to 5.5 V and overcharge detection up to 4.5 V. Using it with multi-cell stacks violates absolute maximum ratings (e.g., V_DS = 24 V max for MOSFETs, but stack voltage exceeds safe operating range), risking immediate failure or latent reliability degradation.