Diodes Incorporated AP9214LA-AF-HSB-7

Overview

AP9214LA-AF-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+ packs for portable power tools and medical devices requiring ultra-low quiescent current (3.0 µA typ) and thermal-efficient U-DFN2535-6 (Type B) packaging.

For engineers reviewing the AP9214LA-AF-HSB-7 datasheet, AP9214LA-AF-HSB-7 pinout, AP9214LA-AF-HSB-7 application, or AP9214LA-AF-HSB-7 equivalent, key selection criteria include selectable power-down mode (0.1 µA sleep), 0V battery charge enable, auto-release vs latch overcharge behavior, and dual-pin-option compatibility with PCB layout constraints for VM/S2 routing.

Technical Context

The AP9214LA-AF-HSB-7 implements independent analog comparators for VDD–VSS (cell voltage), VM–VSS (discharge current), and VDD–VM (charge current), each feeding into logic-controlled delay timers (tCU/tDL/tDOC ±20% accuracy). Its internal level-shifted gate drivers directly control two integrated N-MOSFETs sharing a common drain (EP pad), eliminating external FETs and gate resistors.

Protection sequencing is deterministic: overcharge disables only the charging MOSFET (S2), while overdischarge or short-circuit disables only the discharging MOSFET (S1); overvoltage charger detection (8.0 V fixed) independently gates S2. The device supports factory-configured options including 0V charge permission and power-down activation via external charger connection.

Key Specifications

Pinout & Package

AP9214LA-AF-HSB-7 uses the U-DFN2535-6 (Type B) package with exposed thermal pad (EP), optimized for high-current battery management in space-constrained layouts. Pin-out Option 1 (HSB) places NC on Pin 5 and VM on Pin 4; this variant is used in designs where VM routing to charge path sensing is prioritized.

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 RP502K001A-TR-F, the AP9214LA-AF-HSB-7 delivers full bidirectional protection in one die, reduces system-level component count by ≥6, and enables safer operation with fast-charger compatibility and sub-µs fault response-critical for premium portable electronics.

Availability

AP9214LA-AF-HSB-7 is available at Aetrix Electronics and suitable for power tools, portable medical devices, wearables, and smart home sensors requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for AP9214LA-AF-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 series targets compact, high-reliability Li+ battery packs in consumer and industrial markets, emphasizing integration density, ultra-low power, and factory-programmable safety features without external configuration.

FAQ

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

Pin 5 is designated NC (No Connect) in the HSB pin-out option and must remain electrically floating-no trace, solder mask opening, or thermal connection is permitted. This pin has no internal bond wire and serves solely as a mechanical alignment marker for automated placement. Connecting it risks latch-up or undefined logic states due to parasitic coupling.

How does the 0V battery charge feature operate in practice?

When enabled, the AP9214LA-AF-HSB-7 allows charging current to flow into a fully depleted (0 V) cell by temporarily bypassing the overdischarge lockout. It monitors rising voltage and engages normal protection once VDD exceeds 1.2 V. This occurs without user intervention and is validated down to −40°C, making it ideal for infrequently used backup devices.

Can AP9214LA-AF-HSB-7 support both charge and discharge overcurrent protection simultaneously?

No-it provides separate, mutually exclusive overcurrent paths: discharge overcurrent (VM–VSS ≥ 0.100 V) triggers S1 shutdown, while charge overcurrent (VM–VSS ≤ −0.100 V) triggers S2 shutdown. The device cannot detect simultaneous opposing currents because VM is a single-ended sense node referenced to VSS, not a differential input.

What thermal design guidance applies to the EP pad?

The EP pad is the common drain for both MOSFETs and must be connected to ≥20 mm² of 2-ounce copper with ≥4 thermal vias (0.3 mm diameter) to an internal ground plane. Without this, junction temperature exceeds 150°C at 7 A continuous, violating absolute maximum ratings and triggering thermal shutdown.