Diodes Incorporated AP9214L-AG-HSBR-7

Overview

AP9214L-AG-HSBR-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (RSS(ON) = 13.5 mΩ typ at VDD = 3.9V) in a U-DFN2535-6 (Type B, Option 2) package. It provides overcharge (VCU = 4.25V ±25mV), overdischarge (VDL = 2.50V ±35mV), discharge/charge overcurrent (VDOC = 0.15V ±15mV, VCOC = −0.10V ±15mV), and short-circuit (VSHORT = 0.55V ±100mV) protection for 1-cell Li-ion packs in portable power tools and medical wearables.

For engineers reviewing the AP9214L-AG-HSBR-7 datasheet, AP9214L-AG-HSBR-7 pinout, AP9214L-AG-HSBR-7 application, or AP9214L-AG-HSBR-7 equivalent, this device supports configurable 0V charge permission, selectable auto-release/latch overcharge mode, and fixed delay timing - critical for BMS reliability in space-constrained battery packs.

Technical Context

The AP9214L-AG-HSBR-7 implements dual independent protection paths: one for charging (controlled via S2–VM sensing and G2 gate drive) and one for discharging (via S1–VM sensing and G1 gate drive), with common-drain MOSFETs sharing the EP thermal pad. Its voltage detection circuitry uses precision bandgap references and comparator hysteresis to achieve ±25mV overcharge detection accuracy across −40°C to +85°C.

It features two pin-out options (HSB vs. HSBR); the -HSBR-7 variant uses Pin 4 for VM and Pin 5 for NC, enabling direct compatibility with R2-based current-sense layouts where VM must be placed adjacent to S2. Power-down mode reduces quiescent current to ≤1.0 µA (−40°C to +85°C), while normal-mode ICC is 3.0 µA typ at +25°C.

Key Specifications

Pinout & Package

AP9214L-AG-HSBR-7 is housed in a 2.5mm × 3.5mm U-DFN2535-6 (Type B) package with exposed thermal pad (EP). Pin-Out Option 2 places VM on Pin 4 and NC on Pin 5 - optimized for compact PCB layout with minimal trace length between VM and S2.

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 RP506K001B-TR-F, the AP9214L-AG-HSBR-7 uniquely integrates dual matched N-MOSFETs with factory-configured 0V charge and power-down mode - delivering lowest component count and highest functional integration for space-limited 1-cell systems.

Availability

AP9214L-AG-HSBR-7 is available at Aetrix Electronics and suitable for portable power tools, medical wearables, Bluetooth headsets, and IoT asset trackers requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for AP9214L-AG-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 ICs, with design centers in Asia, Europe, and the US, and manufacturing in IATF 16949-certified facilities.

The AP9214L belongs to Diodes' battery protection IC product line, engineered specifically for high-reliability, space-constrained 1-cell Li-ion applications where integration, ultra-low quiescent current, and configurable protection modes are essential.

FAQ

What is the function of the NC pin on AP9214L-AG-HSBR-7?

The NC (No Connect) pin on AP9214L-AG-HSBR-7 is Pin 5 and has no internal connection. It must be left electrically floating - neither tied to ground nor VDD. This pin exists solely for mechanical symmetry in the U-DFN2535-6 (Type B) package and does not affect functionality or thermal performance.

How does the VM pin operate during discharge overcurrent detection?

During discharge overcurrent, the VM pin senses voltage across R2 between S1 and P−. When VM-to-VSS exceeds VDOC (0.15V ±15mV) for tDOC (typ. 12ms), the IC turns off the discharge MOSFET (S1 path). RVMS then connects VM to VSS, pulling VM near 0V to confirm load removal before releasing the fault.

Can AP9214L-AG-HSBR-7 support bidirectional current sensing with a single resistor?

Yes - AP9214L-AG-HSBR-7 uses the same R2 resistor for both charge and discharge current sensing: VM-to-VSS voltage indicates discharge current (positive polarity), while VM-to-VDD voltage indicates charge current (negative polarity). This eliminates need for separate sense resistors.

What is the thermal pad (EP) connection requirement for reliable operation?

The EP thermal pad must be soldered to a minimum 25 mm² copper area on the PCB, connected to VSS for electrical reference and thermal conduction. Diodes specifies 2-ounce copper with internal ground planes; insufficient copper area causes junction temperature rise beyond 150°C under 7.1A continuous load.