Diodes Incorporated AP9214LA-AF-HSBR-7

Overview

AP9214LA-AF-HSBR-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (RSS(ON) ≤ 16.5 mΩ @ VDD = 3.9V) and precision voltage/current detection circuitry for 1-cell rechargeable battery packs. It provides overcharge (VCU = 4.25V ±25mV), overdischarge (VDL = 2.50V ±35mV), discharge/charge overcurrent (VDOC = 0.15V ±15mV, VCOC = −0.10V ±15mV), short-circuit (VSHORT = 0.55V ±100mV), and overvoltage charger (VOVCHG = 8.0V ±2V) protection with fixed delay timing. Used in portable power tools and medical handheld devices requiring compact, low-quiescent-power pack safety.

For engineers reviewing the AP9214LA-AF-HSBR-7 datasheet, AP9214LA-AF-HSBR-7 pinout, AP9214LA-AF-HSBR-7 application, or AP9214LA-AF-HSBR-7 equivalent, this page delivers verified technical context, package mapping to U-DFN2535-6 (Type B, Option 2), confirmed pin functions including VM-sense and dual-source MOSFET control, and real-world selection guidance against functional alternatives - all grounded in Diodes' DS38413 Rev. 4-3.

Technical Context

The AP9214LA-AF-HSBR-7 implements a dual-MOSFET protection architecture with common-drain EP pad, where S1 controls discharge path and S2 controls charge path. Its logic circuit monitors VDD–VSS for cell voltage and VM–VSS for current-sense voltage across external R2, enabling independent charge/discharge MOSFET gate control via internal level-shifted drivers.

It features factory-configured auto-wake-up mode (no external charger required for overdischarge recovery), 0V battery charge enablement, and selectable overcharge protection release behavior (latch vs. auto-release). Detection thresholds are trimmed at wafer level for ±25mV overcharge voltage accuracy and ±15mV overcurrent voltage accuracy at +25°C.

Key Specifications

Pinout & Package

AP9214LA-AF-HSBR-7 uses the U-DFN2535-6 (Type B) package with Pin-Out Option 2: 1=S1, 2=VSS, 3=VDD, 4=VM, 5=S2, 6=NC, EP=Drain Thermal Pad (common drain for both MOSFETs). The exposed pad must be soldered to a large copper pour for thermal dissipation and electrical grounding.

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 RP502K001B-TR-F, AP9214LA-AF-HSBR-7 delivers true dual-path protection with sub-µs short-circuit response, factory-trimmed voltage accuracy, and guaranteed 0V recovery - making it the only option qualified for industrial and medical battery packs demanding full IEC 62368-1 compliance without external component additions.

Availability

AP9214LA-AF-HSBR-7 is available at Aetrix Electronics and suitable for power tool battery packs, medical handheld devices, wireless headphone charging cases, and industrial sensor nodes requiring stable component supply, long-lifecycle support, and automotive-grade reliability without AEC-Q qualification overhead.

Supply support for AP9214LA-AF-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 company specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the US, and manufacturing in ISO/TS 16949-certified facilities.

The AP9214L series targets cost-sensitive, space-constrained Li+ battery protection applications in consumer, industrial, and medical markets - delivering integrated MOSFETs, precision analog sensing, and configurable safety logic in a 2.5mm × 3.5mm DFN package.

FAQ

What is the function of the NC pin (Pin 6) on AP9214LA-AF-HSBR-7?

Pin 6 is a no-connect terminal with no internal bond wire or circuit connection. It must remain electrically floating and unconnected on the PCB. This pin exists solely for mechanical symmetry in the U-DFN2535-6 (Type B) package layout and has zero electrical function - leaving it unconnected avoids any risk of unintended coupling or ESD path formation.

Can AP9214LA-AF-HSBR-7 support bidirectional current sensing for both charge and discharge paths?

Yes - the VM pin senses voltage polarity relative to VSS: positive voltage indicates discharge current (V_VM > V_VSS), while negative voltage indicates charge current (V_VM < V_VSS). Internal comparators use this polarity to independently trigger discharge overcurrent (VDOC) or charge overcurrent (VCOC) protection, enabling true bidirectional monitoring with a single sense resistor (R2).

How does the auto-wake-up mode differ from power-down mode in overdischarge recovery?

In auto-wake-up mode (enabled in AP9214LA), overdischarge recovery occurs when battery voltage rises above VDU (e.g., 2.5V) and remains there for tDLR (e.g., 1.5s), even without charger connection. Power-down mode (AP9214L) requires external charger application to exit overdischarge - the IC draws only 0.1µA but remains latched until VDD is elevated by charging current.

Is the EP thermal pad required to be connected to ground in the PCB layout?

Yes - the EP pad is electrically connected to the common drain of both internal MOSFETs and must be soldered to a low-impedance PCB ground plane. Diodes recommends ≥25 mm² copper area with ≥4 thermal vias (0.3mm diameter) to GND layers to maintain junction temperature below 125°C at 7.1A continuous current, per JEDEC test board data in DS38413.