Diodes Incorporated AP9214L-AD-HSB-7

Overview

AP9214L-AD-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 and medical handheld devices.

For engineers reviewing the AP9214L-AD-HSB-7 datasheet, AP9214L-AD-HSB-7 pinout, AP9214L-AD-HSB-7 application, or AP9214L-AD-HSB-7 equivalent, key selection criteria include its U-DFN2535-6 (Type B, Option 1) package, selectable power-down mode, 0V charge enable, and ±25 mV overcharge voltage detection accuracy under +25°C conditions.

Technical Context

The AP9214L-AD-HSB-7 implements independent high-accuracy analog comparators for VCU (3.5–4.5 V range), VDL (2.0–3.4 V), VDOC (0.05–0.32 V), and VSHORT (0.45–0.7 V), each with factory-trimmed hysteresis and ±20% delay tolerance. Its logic circuit controls two integrated N-MOSFETs via dedicated gate drivers with common drain (EP pad).

It features dual sensing paths: VDD–VSS monitors cell voltage; VM–VSS detects current via external sense resistor R2 (2.7 kΩ typical), enabling simultaneous charge/discharge control. The device supports optional 0V battery charging and overvoltage charger detection (8.0 V fixed, ±2 V accuracy) without external timing components.

Key Specifications

Pinout & Package

AP9214L-AD-HSB-7 uses the U-DFN2535-6 (Type B, Option 1) package: 2.5 mm × 3.5 mm body, 0.5 mm pitch, 0.75 mm height, EP thermal pad. Pin 5 is NC (no connect); EP must be soldered to large copper area 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 R5460N208AA-TR and BD8620GUL-E2, the AP9214L-AD-HSB-7 uniquely combines ultra-low RSS(ON), 0V charge enable, and overvoltage charger detection in a single 2.5×3.5 mm package-reducing total solution size by 40% and eliminating three external components.

Availability

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

Supply support for AP9214L-AD-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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in IATF 16949-certified facilities.

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

FAQ

What is the function of the NC pin (Pin 5) on AP9214L-AD-HSB-7?

Pin 5 is designated NC (No Connect) and must remain electrically unconnected and floating in all PCB layouts. It has no internal bond wire or circuit connection. Solder mask should fully cover this pad to prevent accidental shorts, and no trace or thermal relief should be routed to it. This pin configuration corresponds to U-DFN2535-6 Type B Option 1 per the official Diodes datasheet DS38413 Rev. 4-3.

Does AP9214L-AD-HSB-7 support automatic recovery from overdischarge without a charger?

No. AP9214L-AD-HSB-7 uses power-down mode (indicated by "-AD" suffix), meaning it enters ultra-low-current sleep (≤0.1 μA) during overdischarge and requires external charger connection to wake up and resume normal operation. Recovery does not occur autonomously upon voltage rise alone-this distinguishes it from the auto-wake-up variant AP9214LA.

How is the discharge overcurrent threshold set, and what resistor value achieves 10 A cutoff?

The discharge overcurrent threshold is fixed at 0.15 V ±15 mV (typical setting for "-AD" version). To achieve 10 A cutoff, use an R2 sense resistor of 15 mΩ (0.15 V ÷ 10 A), placed between P− and VM. Diodes specifies R2 range as 300 Ω–4 kΩ, but for current sensing, low-value precision resistors (e.g., 15 mΩ, 1% tolerance, 0.5 W) are required and validated in the typical application circuit.

Can AP9214L-AD-HSB-7 be used with 2-cell Li-ion batteries?

No. AP9214L-AD-HSB-7 is strictly rated for 1-cell Li-ion operation with VDD–VSS operating range of 1.5–5.5 V and absolute maximum VDS of 12 V. Applying it to 2-cell (up to 8.4 V) violates absolute maximum ratings and risks permanent damage. For 2-cell applications, Diodes recommends AP9224 or similar multi-cell protection ICs.