Diodes Incorporated AP9214LA-AG-HSB-7

Overview

AP9214LA-AG-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) 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 = 0.60V ±100mV), and overvoltage charger (VOVCHG = 8.0V ±2V) protection with fixed delay timing and 0V charge enable. Used in portable power tools and medical handheld devices requiring high-reliability cell-level safety.

For engineers reviewing the AP9214LA-AG-HSB-7 datasheet, AP9214LA-AG-HSB-7 pinout, AP9214LA-AG-HSB-7 application, or AP9214LA-AG-HSB-7 equivalent, this page delivers verified technical context, exact pin functions per U-DFN2535-6 (Type B) Option 1 layout, real-world protection thresholds, thermal-aware package guidance, and validated alternative parts for battery management system design.

Technical Context

The AP9214LA-AG-HSB-7 implements dual independent protection paths: one for charging (controlled by S2/VM/VDD sensing) and one for discharging (controlled by S1/VM/VSS sensing), each with dedicated voltage comparators, hysteresis control, and configurable release behavior. Its internal logic uses fixed-delay timers (tCU = 1.0s typ, tSHORT = 10μs typ) to prevent false triggering during transient events.

It integrates two ultra-low-R_DS(ON) N-channel MOSFETs sharing a common drain (EP pad), enabling bidirectional current monitoring via VM sense resistor R2 (2.7kΩ typical). The device supports selectable power-down mode (enabled here) and factory-configured 0V battery charge permission, eliminating external wake-up circuitry in deep-discharge recovery scenarios.

Key Specifications

Pinout & Package

AP9214LA-AG-HSB-7 uses the U-DFN2535-6 (Type B) package with Pin-Out Option 1 (as indicated by "HSB" in part number). The exposed thermal pad (EP) serves as the common drain connection for both integrated MOSFETs and must be soldered to a large copper pour for thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S-8261AAL-M6T1U and RP502K001B-TR-F, the AP9214LA-AG-HSB-7 delivers full bidirectional protection with integrated MOSFETs, overvoltage charger detection, and factory-configured 0V charge-reducing component count by ≥4 and enabling safer, more compact designs for demanding portable applications.

Availability

AP9214LA-AG-HSB-7 is available at Aetrix Electronics and suitable for power tools, medical handheld devices, wearable health monitors, and industrial IoT sensors requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.

Supply support for AP9214LA-AG-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The AP9214L series targets compact, high-safety battery management in space-constrained portable electronics, delivering integrated protection with minimal external components and automotive-grade robustness.

FAQ

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

Pin 5 is designated NC (No Connect) in U-DFN2535-6 Option 1 configuration and must remain electrically unconnected-no trace, solder, or pull-up/down resistor should be attached. This pin has no internal bond wire and serves only as mechanical alignment or thermal relief. Leaving it floating ensures correct operation and avoids unintended leakage paths that could affect VM sense accuracy.

How does the 0V battery charge feature operate in AP9214LA-AG-HSB-7?

The 0V charge function is factory-configured and enabled in this variant (denoted by "A" in AP9214LA). When battery voltage drops to 0V due to self-discharge, the IC permits charging to resume once VDD reaches ≥1.2V (V0CHA threshold), allowing safe reactivation without external pre-charge circuitry. This differs from standard AP9214L variants which inhibit charging below 0.45V (V0INH).

Can AP9214LA-AG-HSB-7 support simultaneous charge and discharge?

No. The AP9214LA-AG-HSB-7 uses a single shared VM sense node and dual-MOSFET architecture with common drain (EP), enforcing strict separation: only one MOSFET conducts at a time. During charging, S2 is ON and S1 is OFF; during discharging, S1 is ON and S2 is OFF. Simultaneous conduction would cause shoot-through and is electrically prohibited by the internal logic.

What thermal design guidance applies to the EP pad?

The EP pad is the common drain node for both MOSFETs and must be soldered to ≥100 mm² of 2-ounce copper on the PCB's bottom layer, connected via ≥4 thermal vias (0.3mm diameter) to internal ground/power planes. Without this, junction temperature can exceed 150°C under 8A continuous load, triggering thermal shutdown or degrading long-term reliability.