Diodes Incorporated AP9214L-AM-HSB-7

Overview

AP9214L-AM-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 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-current pack safety.

For engineers reviewing the AP9214L-AM-HSB-7 datasheet, AP9214L-AM-HSB-7 pinout, AP9214L-AM-HSB-7 application, or AP9214L-AM-HSB-7 equivalent, this page delivers verified package mapping (U-DFN2535-6 Type B, Option 1), confirmed MOSFET on-resistance, real-world delay accuracy (±20% at +25°C), selectable power-down mode, and 0V charge enable - all critical for battery management system validation and BOM qualification.

Technical Context

The AP9214L-AM-HSB-7 implements independent analog comparators for six protection conditions - overcharge, overdischarge, discharge overcurrent, charge overcurrent, load short, and overvoltage charger - each with dedicated hysteresis and fixed delay timers (e.g., tCU = 1.0s typ, tSHORT = 10μs typ). Its logic circuit controls two integrated N-MOSFETs sharing a common drain (EP pad), enabling bidirectional current path switching without external FETs.

It operates across −40°C to +85°C with supply voltage range 1.5–5.5V (VDD–VSS), supports 0V battery charging via factory-set internal option, and offers user-selectable overcharge release behavior (auto-release or latch). The VM pin senses both charge/discharge current direction and charger presence through R2 resistor biasing, while VDD is supplied via current-limiting resistor R1.

Key Specifications

Pinout & Package

AP9214L-AM-HSB-7 uses the U-DFN2535-6 (Type B) package with Pin-Out Option 1 (HSB suffix), featuring an exposed thermal pad (EP) as the common drain node for both integrated N-MOSFETs. PCB layout requires large copper area under EP for thermal dissipation.

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 RP502K001A-TR-F, the AP9214L-AM-HSB-7 uniquely integrates both charge and discharge MOSFETs with matched on-resistance (<16 mΩ), delivers overvoltage charger detection (8.0V), and supports 0V battery charging - reducing component count by 4+ parts and enabling certified safety compliance in space-constrained designs.

Availability

AP9214L-AM-HSB-7 is available at Aetrix Electronics and suitable for portable power tools, medical handheld devices, wireless headphones, and IoT asset trackers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP9214L-AM-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and protection applications.

The AP9214L belongs to Diodes' Battery Protection IC product line, engineered specifically for space-constrained, high-reliability 1-cell Li+ battery packs in consumer, medical, and industrial equipment - emphasizing integration, ultra-low power, and AEC-Q200-aligned robustness.

FAQ

What is the function of the NC pin on AP9214L-AM-HSB-7?

The NC (No Connect) pin on AP9214L-AM-HSB-7 has no internal connection and must remain unconnected and floating in the PCB layout. It serves solely as a mechanical placeholder in the U-DFN2535-6 (Type B) Option 1 package and does not affect electrical operation. Leaving it unconnected avoids unintended coupling or leakage paths that could compromise overcurrent detection accuracy.

Does AP9214L-AM-HSB-7 support automatic recovery from overdischarge?

Yes - AP9214L-AM-HSB-7 is configured in auto-release mode for overdischarge protection. When battery voltage rises above the overdischarge release voltage (VDU = 2.80V ±65mV), and the condition persists for tDLR delay time (typically 1.0s), the discharging MOSFET automatically turns back on. This eliminates manual intervention or external wake-up circuitry in applications like IoT trackers and portable audio.

How is the VM pin used for short-circuit detection?

The VM pin senses voltage drop across external sense resistor R2 (typically 2.7kΩ) between P− and S2. During a short, VM-to-VSS voltage exceeds VSHORT (0.55V ±100mV), triggering shutdown within 10μs typical. Unlike discharge overcurrent detection, short-circuit response uses a faster threshold and shorter delay to prevent catastrophic energy release before thermal limits are exceeded.

Can AP9214L-AM-HSB-7 protect against charger overvoltage faults?

Yes - AP9214L-AM-HSB-7 includes a dedicated overvoltage charger detection circuit monitoring voltage between VDD and VM pins. If this exceeds VOVCHG (8.0V ±2V), the charging MOSFET shuts off immediately (no delay). Recovery occurs when voltage falls below VOVCHGR (7.3V ±2V). This protects the cell from damage due to faulty or mismatched chargers in power tool and medical applications.