Diodes Incorporated AP9214L-AL-HSBR-7

Overview

AP9214L-AL-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), and discharge overcurrent sensing (±15 mV accuracy). It operates in 1-cell Li+ packs, providing latch-mode overcharge protection, 0V charge enable, and power-down mode for ultra-low quiescent current (0.1 µA max).

For engineers reviewing the AP9214L-AL-HSBR-7 datasheet, AP9214L-AL-HSBR-7 pinout, AP9214L-AL-HSBR-7 application, or AP9214L-AL-HSBR-7 equivalent, key selection criteria include its U-DFN2535-6 (Type B, Option 2) package, VM-sense-based current monitoring, selectable overcharge release behavior, and built-in fixed delay timing for BMS reliability without external RC networks.

Technical Context

The AP9214L-AL-HSBR-7 implements dual-path protection logic with independent charge/discharge MOSFET control via internal level-shifted gate drivers. Its VM pin senses voltage drop across an external sense resistor to detect charge/discharge overcurrent and short-circuit events with programmable thresholds (VDOC = 0.05–0.32 V, VSHORT = 0.45–0.7 V).

It features factory-configured parameters: overcharge detection voltage = 4.25 V (±25 mV), overdischarge detection = 2.50 V (±35 mV), and fixed overvoltage charger detection at 8.0 V (±2 V). The device supports two operational modes-power-down (0.1 µA standby) and auto-wake-up-selected at manufacture and fixed per part number.

Key Specifications

Pinout & Package

AP9214L-AL-HSBR-7 uses the U-DFN2535-6 (Type B) package with Pin-Out Option 2: S1/VSS/VDD/VM/S2/NC/EP. The exposed thermal pad (EP) serves as the common drain node for both integrated N-channel MOSFETs and must be connected to a large PCB copper area for thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S-8261A and RP507K001B, AP9214L-AL-HSBR-7 delivers integrated bidirectional MOSFET control, factory-configurable 0V charge, and 0.1 µA power-down current-enabling smaller, safer, and longer-shelf-life battery packs without external component trade-offs.

Availability

AP9214L-AL-HSBR-7 is available at Aetrix Electronics and suitable for power tool battery packs, medical portable devices, wireless headphone cases, and IoT sensor node batteries requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for AP9214L-AL-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, specializing in power management, signal integrity, and protection solutions for high-reliability applications.

The AP9214L belongs to Diodes' battery protection IC product line, engineered specifically for space-constrained, high-safety Li+ battery packs in consumer, medical, and industrial equipment where integration, accuracy, and ultra-low power are critical.

FAQ

What is the function of the VM pin in AP9214L-AL-HSBR-7?

The VM pin serves as the bidirectional current sense input. It measures voltage drop across an external resistor (R2) placed between the P− terminal and S2 to detect both charge overcurrent (when VM ≤ VCOC) and discharge overcurrent/short (when VM ≥ VDOC or VSHORT). Internal RVMS and RVMD resistors enable automatic status recovery after fault clearance.

Does AP9214L-AL-HSBR-7 support overvoltage protection for the charger input?

Yes. The device includes a dedicated overvoltage charger detection circuit that monitors voltage between VDD and VM pins. When this voltage exceeds 8.0 V (±2 V), it immediately disables the charging MOSFET; recovery occurs when voltage falls below 7.3 V (±2 V). No delay is applied to this function, enabling fast response to faulty chargers.

How does the power-down mode operate, and how is it exited?

Power-down mode reduces current consumption to ≤0.1 µA by disabling internal logic and placing the device in overdischarge state. Exit requires connecting a functional charger to raise battery voltage above VDU (2.50 V typ) while VM is pulled low via R2. Unlike auto-wake-up versions, no passive wake-up occurs without charger presence.

Can AP9214L-AL-HSBR-7 be used in 2-cell battery configurations?

No. The AP9214L-AL-HSBR-7 is strictly designed for 1-cell Li+ applications with VDD-to-VSS operating range up to 5.5 V. Its overcharge detection threshold (max 4.5 V) and absolute maximum VDS rating (24 V) do not support series-connected cells. For 2-cell packs, Diodes' AP9217 or equivalent dual-cell protection ICs are required.