Diodes Incorporated AP9214L-AL-HSB-7

Overview

AP9214L-AL-HSB-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (RSS(ON) ≤ 16 mΩ @ VDD = 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-ion packs for portable power tools, Bluetooth headsets, and medical wearables.

For engineers reviewing the AP9214L-AL-HSB-7 datasheet, AP9214L-AL-HSB-7 pinout, AP9214L-AL-HSB-7 application, or AP9214L-AL-HSB-7 equivalent, key selection criteria include selectable power-down mode, 0V battery charge enable, overcharge auto-release/latch configuration, and U-DFN2535-6 (Type B, Option 1) package compatibility with thermal pad grounding.

Technical Context

The AP9214L-AL-HSB-7 implements independent analog voltage comparators for VDD–VSS (battery voltage) and VM–VSS (current-sense differential), each with programmable thresholds and ±20% delay timing accuracy. Its logic circuit drives two integrated N-MOSFETs sharing a common drain (EP pad) to control charge/discharge paths.

It supports three configurable functions via factory setting: power-down mode (0.1 µA standby), 0V battery charge permission (V0CHA = 1.2 V), and overcharge protection release behavior (auto or latch). The VM pin interfaces with external sense resistor R2 (2.7 kΩ typical) to detect charge/discharge current polarity and magnitude.

Key Specifications

Pinout & Package

AP9214L-AL-HSB-7 uses the U-DFN2535-6 (Type B, Option 1) package: 2.5 mm × 3.5 mm × 0.55 mm body with exposed thermal pad (EP). The EP must be soldered to a large copper pour for thermal dissipation and serves as the common drain node for both internal MOSFETs.

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 AP9214L-AL-HSB-7 delivers lower system-level BOM cost through monolithic integration, higher reliability via elimination of external timing components, and broader functional coverage including 0V charge and selectable power-down-making it optimal for compact, high-reliability portable designs.

Availability

AP9214L-AL-HSB-7 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headset batteries, medical wearable sensors, and smart pen batteries requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for AP9214L-AL-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 solutions, with manufacturing certified to IATF 16949 and product definitions aligned to AEC-Q200 standards.

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

FAQ

What is the function of the NC pin (Pin 4) on AP9214L-AL-HSB-7?

Pin 4 is a no-connect terminal with no internal bonding or circuit connection. It must remain unconnected and floating in PCB layout-neither grounded nor routed-to avoid parasitic coupling or ESD susceptibility. This pin exists solely for mechanical symmetry in the U-DFN2535-6 (Type B) package footprint.

Can AP9214L-AL-HSB-7 support bidirectional current sensing without external op-amps?

Yes. The VM pin senses voltage polarity relative to VSS: positive voltage indicates discharge current (VM > VSS), negative voltage indicates charge current (VM < VSS). Internal comparator logic interprets this sign to independently trigger discharge overcurrent or charge overcurrent protection-no external amplification required.

How does the EP thermal pad affect electrical performance?

The EP pad is electrically connected to the common drain of both internal MOSFETs. Proper soldering to a ≥200 mm² copper area with ≥4 thermal vias ensures junction temperature remains ≤115°C at 9 A continuous current, maintaining RSS(ON) stability and preventing thermal shutdown. Floating the EP causes immediate device failure due to undefined drain potential.

Is the overvoltage charger detection (VOVCHG = 8.0 V) adjustable?

No. VOVCHG is a fixed internal threshold of 8.0 V ±2 V, designed to protect against faulty or mismatched chargers delivering >6 V to the VDD–VM terminals. It operates without delay and cannot be modified via external components or factory programming-it is a hardwired safety feature.