Diodes Incorporated AP9214LA-AN-HSBR-7

Overview

AP9214LA-AN-HSBR-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (RSS(ON) ≤ 16.5 mΩ), overcharge/overdischarge voltage detection (±25 mV accuracy), discharge overcurrent sensing (±15 mV), and short-circuit protection with 1.2 µs response. It operates in 1-cell Li-ion packs for portable power tools, Bluetooth headsets, and medical wearables.

For engineers reviewing the AP9214LA-AN-HSBR-7 datasheet, AP9214LA-AN-HSBR-7 pinout, AP9214LA-AN-HSBR-7 application, or AP9214LA-AN-HSBR-7 equivalent, key selection criteria include its U-DFN2535-6 (Type B, Option 2) package, selectable auto-wake-up mode, 0V charge enable, and ±25 mV overcharge voltage detection accuracy at +25°C.

Technical Context

The AP9214LA-AN-HSBR-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) with ±20% tolerance. Its dual-MOSFET architecture uses common-drain EP pad for thermal coupling and enables simultaneous charge/discharge control via separate S1 (discharge source) and S2 (charge source) terminals.

It supports three configurable functions: 0V battery charging (enabled), overcharge protection release mode (auto-release), and power-down behavior (auto-wake-up). The VM pin senses bidirectional current through external R2 (2.7 kΩ typical), while internal RVMD/RVMS resistors (300 kΩ/30 kΩ typ) provide pull-up/pull-down during fault recovery without external components.

Key Specifications

Pinout & Package

AP9214LA-AN-HSBR-7 uses the U-DFN2535-6 (Type B, Option 2) package: 2.5 mm × 3.5 mm × 0.55 mm body with exposed thermal pad (EP). Pin 1–6 arranged as S1–VSS–VDD–VM–S2–NC (top view).

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 RP505K001B-TR-F, the AP9214LA-AN-HSBR-7 delivers lower system-level cost via integrated MOSFETs, faster short-circuit response, and guaranteed 0V charge capability-critical for consumer electronics with unattended storage.

Availability

AP9214LA-AN-HSBR-7 is available at Aetrix Electronics and suitable for portable power tools, wireless audio accessories, and medical wearables requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP9214LA-AN-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 analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in IATF 16949-certified facilities.

The AP9214L series targets cost-sensitive, space-constrained 1-cell Li+ applications where integration, ultra-low quiescent current, and factory-configurable protection parameters reduce bill-of-materials and validation effort.

FAQ

What is the function of the NC pin on AP9214LA-AN-HSBR-7?

The NC (No Connect) pin is physically present but has no internal connection or electrical function. It must remain unconnected and floating in the PCB layout. This pin exists solely for mechanical symmetry in the U-DFN2535-6 (Type B, Option 2) package and does not affect device operation or thermal performance.

How does the auto-wake-up mode differ from power-down mode in this device?

Auto-wake-up mode keeps the AP9214LA-AN-HSBR-7 active during overdischarge, allowing recovery when battery voltage rises above VDU without external intervention. Power-down mode (not implemented in this variant) would force sleep with 0.1 µA current draw and require charger connection to resume operation-this part is factory-configured for auto-wake-up only.

Can AP9214LA-AN-HSBR-7 protect against overvoltage from a 2-cell charger?

Yes. Its overvoltage charger detection circuit monitors VDD–VM and triggers cutoff at 8.0 V (±2 V), preventing damage when a 2-cell (8.4 V) charger is accidentally applied to a 1-cell pack. Release occurs at 7.3 V, enabling safe reconnection once the faulty charger is removed.

What is the recommended value for R2 in the typical application circuit?

The datasheet specifies R2 = 2.7 kΩ as the typical value for the VM sense resistor. It must be between 300 Ω and 4 kΩ to ensure accurate current sensing and proper charge MOSFET control. Values above 4 kΩ may prevent charge cutoff due to excessive voltage drop across R2 during overcurrent events.