Diodes Incorporated AP9214L-AI-HSBR-7

Overview

AP9214L-AI-HSBR-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (R_SS(ON) = 13.5 mΩ typ at V_DD = 3.9 V) and precision voltage/current detection circuitry for 1-cell rechargeable battery packs. It provides overcharge (3.5–4.5 V, ±25 mV), overdischarge (2.0–3.4 V, ±35 mV), discharge/charge overcurrent (±15 mV), and short-circuit (±100 mV) protection with fixed delay timing and 0V charge enable. Used in portable power tools and medical handheld devices requiring compact, integrated pack-level safety.

For engineers reviewing the AP9214L-AI-HSBR-7 datasheet, AP9214L-AI-HSBR-7 pinout, AP9214L-AI-HSBR-7 application, or AP9214L-AI-HSBR-7 equivalent, key selection criteria include its U-DFN2535-6 (Type B, Option 2) package, selectable power-down mode, ±25 mV overcharge detection accuracy, 9.0 A continuous drain current rating, and built-in 0V battery charge functionality - all critical for reliable 1-cell Li+ pack design.

Technical Context

The AP9214L-AI-HSBR-7 implements independent high-accuracy analog comparators for six protection thresholds (overcharge, overdischarge, discharge/charge overcurrent, short circuit, overvoltage charger), each with programmable hysteresis and ±20% delay timing tolerance. Its logic circuit controls two integrated N-channel MOSFETs sharing a common drain (EP pad), enabling bidirectional current blocking without external FETs.

It supports two operating modes: power-down (0.1 µA max quiescent current) activated during overdischarge, requiring charger reconnection to wake; and auto-wake-up (5.5 µA max standby) that recovers when battery voltage exceeds V_DU. The VM pin senses both charge and discharge current via external R2 resistor, while internal RVMD/RVMS resistors (300 kΩ/30 kΩ typ) enable status pull-up/pull-down during fault conditions.

Key Specifications

Pinout & Package

AP9214L-AI-HSBR-7 uses the U-DFN2535-6 (Type B) package with Pin-Out Option 2: S1/VSS/VDD/VM/S2/NC/EP. The exposed thermal pad (EP) serves as the common drain for both integrated MOSFETs and must be connected to a large PCB copper area for heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP9214LA-AI-HSBR-7, this part offers lower quiescent current in fault states but requires charger intervention to exit overdischarge; versus SE9011E, it reduces component count and board space at the cost of fixed MOSFET parameters and lower maximum current rating.

Availability

AP9214L-AI-HSBR-7 is available at Aetrix Electronics and suitable for portable power tools, medical handheld devices, and smart wearables requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP9214L-AI-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 manufacturer of discrete semiconductors and integrated circuits, specializing in high-performance, energy-efficient solutions for power management, signal integrity, and protection.

The AP9214L belongs to Diodes' battery protection IC product line, engineered specifically for space-constrained, cost-sensitive 1-cell Li+ applications demanding integrated MOSFETs, precision analog sensing, and ultra-low power operation.

FAQ

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

The NC (No Connect) pin is electrically unconnected and must remain floating with no PCB trace or solder joint. It serves only as a mechanical placeholder in the U-DFN2535-6 (Type B, Option 2) package layout and has zero electrical function. Connecting it risks unintended coupling or shorting due to proximity to adjacent active terminals like S2 and EP.

How does the 0V battery charge feature operate in AP9214L-AI-HSBR-7?

The 0V battery charge function is factory-configured into AP9214L-AI-HSBR-7 and permits charging when the cell voltage is at 0 V. It activates when the charger applies voltage, causing the internal circuit to recognize the 0V condition and enable the charging MOSFET. This avoids permanent cell damage from deep discharge and eliminates need for external pre-charge circuitry.

Can AP9214L-AI-HSBR-7 support both charge and discharge overcurrent protection simultaneously?

Yes - AP9214L-AI-HSBR-7 independently monitors VM-to-VSS voltage for discharge overcurrent (V_DOC ≥ 0.100 V) and VM-to-VSS voltage polarity reversal for charge overcurrent (V_COC ≤ –0.05 V). Each condition triggers dedicated MOSFET shutdown: S1 for discharge faults, S2 for charge faults, ensuring bidirectional protection without interference.

What thermal design considerations apply to the EP pad of AP9214L-AI-HSBR-7?

The EP pad is the common drain for both integrated MOSFETs and must be soldered to a minimum 25 mm² copper area on the PCB's inner or outer layer. Thermal vias (≥4×0.3 mm diameter) should connect it to internal ground planes. This configuration sustains 9.0 A continuous current at +70°C ambient while limiting junction temperature rise to <50°C above ambient per JEDEC test board conditions.