Diodes Incorporated AP9214L-AB-HSBR-7

Overview

AP9214L-AB-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 AP9214L-AB-HSBR-7 datasheet, AP9214L-AB-HSBR-7 pinout, AP9214L-AB-HSBR-7 application, or AP9214L-AB-HSBR-7 equivalent, key selection criteria include selectable power-down mode, 0V battery charge enable, auto-release vs latch overcharge behavior, and U-DFN2535-6 (Type B, Option 2) pin mapping compatibility with PCB layout constraints.

Technical Context

The AP9214L-AB-HSBR-7 implements independent voltage monitoring paths for VDD–VSS (cell voltage) and VM–VSS (current-sense differential), with dedicated comparators for overcharge (VCU = 4.25 V ±25 mV), overdischarge (VDL = 2.50 V ±35 mV), and load short (VSHORT = 0.60 V ±100 mV). Its logic circuit controls two integrated N-MOSFETs using common-drain EP pad architecture.

It features factory-programmed settings: AB denotes VCU = 4.25 V, VCL = 4.15 V, VDL = 2.50 V, VDU = 2.80 V, VDOC = 0.10 V, VSHORT = 0.60 V, VCOC = −0.10 V, and includes 0V charge enable and auto-release overcharge mode. Delay times (e.g., tCU = 1.0 s, tSHORT = 1.2 μs) are fixed and temperature-compensated (±20% at +25°C).

Key Specifications

Pinout & Package

AP9214L-AB-HSBR-7 uses the U-DFN2535-6 (Type B) package with exposed thermal pad (EP), optimized for high-current battery pack PCBs requiring minimal footprint and efficient heat dissipation via large copper pour under EP.

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 RP502K001B-TR-F, the AP9214L-AB-HSBR-7 delivers lower system-level component count, faster short-circuit response, and guaranteed 0V charge capability-critical for sealed, maintenance-free battery packs in portable electronics.

Availability

AP9214L-AB-HSBR-7 is available at Aetrix Electronics and suitable for portable power tools, wireless audio accessories, medical monitoring devices, and smart wearables requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for AP9214L-AB-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the US 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+ applications where integration, accuracy, and ultra-low quiescent current are mandatory.

FAQ

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

Pin 5 is designated NC (No Connect) in the HSBR pin-out option and must remain unconnected and floating. It has no internal bond wire or electrical connection-any soldering or routing to this pin risks mechanical stress on the die or unintended coupling. The device functions identically whether this pin is left open or covered with solder mask.

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

When the battery voltage reaches 0 V, the AP9214L-AB-HSBR-7 remains capable of detecting charger presence via the VM–VSS voltage differential. Once a charger applies ≥1.2 V across the pack, the IC activates its charge MOSFET and permits current flow-even before the cell voltage rises above 2.0 V-enabling safe, controlled recovery without external intervention.

Can AP9214L-AB-HSBR-7 support asymmetric current limits for charge vs. discharge?

Yes. The device uses separate thresholds: VCOC = −0.10 V (charge overcurrent) and VDOC = +0.10 V (discharge overcurrent), allowing independent current limiting. With a 10 mΩ sense resistor, this yields 10 A discharge limit and 10 A charge limit-but selecting different R2 values or adjusting external sense resistance enables asymmetry (e.g., 8 A charge / 12 A discharge).

What thermal design guidance applies to the EP pad?

The EP pad is the common drain node for both MOSFETs and must be connected to a minimum 120 mm² copper area (2-layer, 2 oz Cu) with ≥4 thermal vias (0.3 mm diameter) to inner ground planes. This ensures junction temperature stays ≤115°C at 9 A continuous current, per the 1000 mW PD rating and +85°C ambient specification.