Diodes Incorporated AP9214L-AF-HSBR-7

Overview

AP9214L-AF-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 at +25°C), discharge overcurrent sensing (±15 mV), and short-circuit protection with 0.6–1.4 μs response. It operates in 1-cell Li+ battery packs for portable power tools and medical handheld devices.

For engineers reviewing the AP9214L-AF-HSBR-7 datasheet, AP9214L-AF-HSBR-7 pinout, AP9214L-AF-HSBR-7 application, or AP9214L-AF-HSBR-7 equivalent, key selection criteria include selectable power-down mode, 0V battery charge enable, overcharge auto-release/latch configuration, and U-DFN2535-6 (Type B, Option 2) thermal pad layout requirements.

Technical Context

The AP9214L-AF-HSBR-7 implements independent voltage monitoring paths for VDD–VSS (cell voltage), VM–VSS (discharge current), and VDD–VM (charger voltage), each feeding dedicated comparators with programmable thresholds and ±20% delay timing accuracy. Its logic circuit controls two integrated N-MOSFETs using level-shifted gate drivers referenced to S1/S2 source terminals.

It supports two operational modes: power-down (0.1 µA standby, requires charger wake-up) and auto-wake-up (5.5 µA standby, recovers at VDL + tDLR). The device includes fixed overvoltage charger detection (8.0 V ±2 V) with no delay, and factory-configured 0V battery charge permission via internal fuse setting.

Key Specifications

Pinout & Package

AP9214L-AF-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) for enhanced heat dissipation. Pin 1–6 are arranged per top-view layout: S1–VSS–VDD–VM–S2–NC, with EP connected to common MOSFET drain.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 1-cell Li+ battery protection applications.

Compared with S-8261AxxA and RP506KxxA, the AP9214L-AF-HSBR-7 delivers higher integration (dual N-MOSFET), faster short-circuit response (sub-µs vs ≥10 µs), and factory-configured 0V charge-reducing design validation effort and improving field reliability in consumer and medical applications.

Availability

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

Supply support for AP9214L-AF-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 ICs, with manufacturing certified to IATF 16949 and product definitions aligned with AEC-Q200 standards.

The AP9214L belongs to Diodes' battery protection IC product line, engineered specifically for space-constrained, high-reliability 1-cell Li+ applications where integration, ultra-low power, and configurable safety thresholds are critical.

FAQ

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

The NC (No Connect) pin is unconnected internally and must remain electrically floating in the PCB layout. It serves no functional purpose and should not be tied to VSS, VDD, or any other net. Leaving it unconnected avoids unintended coupling or parasitic effects that could impact voltage detection accuracy.

How does the 0V battery charge feature operate in AP9214L-AF-HSBR-7?

The 0V battery charge function is factory-programmed into AP9214L-AF-HSBR-7 and permits charging when the cell voltage is 0 V. It activates when the charger applies voltage sufficient to raise the VDD pin above 1.2 V, allowing the IC to power up and enable the charging MOSFET-no external wake-up circuit is needed.

Can AP9214L-AF-HSBR-7 support asymmetric charge/discharge current limits?

Yes. Asymmetric limits are implemented using separate sense resistors: R2 between VM and S2 sets the charge overcurrent threshold (VCOC), while the same R2 between VM and S1 sets the discharge overcurrent threshold (VDOC). Independent resistor values allow different trip points for charge and discharge paths.

What thermal design guidance applies to the EP pad of AP9214L-AF-HSBR-7?

The EP pad must be connected to a minimum 100 mm² copper area on the PCB's inner or bottom layer, with ≥4 thermal vias (0.3 mm diameter) connecting to internal ground planes. This achieves ≤45°C/W junction-to-ambient thermal resistance, ensuring safe operation at 9 A continuous discharge current.