Diodes Incorporated AP9214LA-AA-HSB-7

Overview

AP9214LA-AA-HSB-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (RSS(ON) ≤16 mΩ @ 4.0V), overcharge/overdischarge voltage detection (±25 mV accuracy), discharge overcurrent sensing (±15 mV), and short-circuit protection with 1 μs response. It operates in 1-cell Li+ packs for portable power tools, Bluetooth headsets, and medical wearables.

For engineers reviewing the AP9214LA-AA-HSB-7 datasheet, AP9214LA-AA-HSB-7 pinout, AP9214LA-AA-HSB-7 application, or AP9214LA-AA-HSB-7 equivalent, key selection criteria include integrated MOSFET R_DS(on), 0.1 µA power-down current, selectable 0V charge function, and U-DFN2535-6 (Type B, Option 1) package compatibility with high-density PCB layouts.

Technical Context

The AP9214LA-AA-HSB-7 implements dual independent protection paths: one for charging (controlled via S2/VM/VDD) and one for discharging (via S1/VM/VSS), each with dedicated voltage and current thresholds. Its logic circuit uses internal level-shifted drivers to control two N-channel MOSFETs sharing a common drain (EP pad).

It features factory-programmed fixed delay timers (e.g., t_CU = 1.0 s typ, ±20% accuracy) and supports either power-down mode (0.1 µA standby) or auto-wake-up operation. The VM pin senses bidirectional current through an external sense resistor (R2 = 2.7 kΩ typical), enabling precise overcurrent and short-circuit detection without external comparators.

Key Specifications

Pinout & Package

Package: U-DFN2535-6 (Type B), 2.5 mm × 3.5 mm × 0.55 mm, exposed thermal pad (EP), RoHS-compliant, halogen-free.

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 RP507K001B-TR-F, the AP9214LA-AA-HSB-7 delivers lower system-level BOM cost and smaller footprint via dual integrated MOSFETs, while adding unique functions like 8.0 V charger overvoltage detection and factory-set 0V charge enable - critical for medical and premium consumer designs.

Availability

AP9214LA-AA-HSB-7 is available at Aetrix Electronics and suitable for power tool battery packs, wireless earbuds, and portable medical monitors requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.

Supply support for AP9214LA-AA-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 AEC-Q200 standards.

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

FAQ

What is the function of the NC pin on AP9214LA-AA-HSB-7?

The NC (No Connect) pin on AP9214LA-AA-HSB-7 is Pin 5 in the U-DFN2535-6 (Type B, Option 1) package. It has no internal connection and must remain electrically floating - no pull-up, pull-down, or PCB trace should attach to it. This pin exists solely for mechanical symmetry and package compatibility with Option 2 (HSBR), where NC is relocated to Pin 4.

Does AP9214LA-AA-HSB-7 support automatic recovery from overdischarge without a charger?

Yes - the "A" suffix denotes auto-wake-up functionality. When the battery voltage rises above the overdischarge release voltage (VDU = 2.800 V ±65 mV) and remains there for ≥t_DLR (typically 1.0 s), the IC automatically exits overdischarge mode and re-enables discharge, even without charger connection. This differs from the "L" version, which requires charger presence.

How is the discharge overcurrent threshold set, and what external component is required?

The discharge overcurrent threshold is fixed at 0.100 V ±15 mV (typical) and measured between VM and VSS pins. An external sense resistor (R2) is required between P− and VM; with R2 = 2.7 kΩ, the threshold corresponds to ~37 mA sense current. For 10 A load cutoff, a 10 mΩ R2 is used, yielding 0.100 V drop at 10 A.

Can AP9214LA-AA-HSB-7 protect against overvoltage from incompatible chargers?

Yes - it includes a dedicated overvoltage charger detection circuit that monitors voltage between VDD and VM. If this exceeds 8.0 V ±2 V, the charging MOSFET is immediately disabled (no delay). When voltage falls below 7.3 V ±2 V, charging resumes. This protects against damaged or non-compliant 5 V/9 V/12 V chargers connected to 1S Li+ systems.