Diodes Incorporated AP9214LA-AL-HSB-7

Overview

AP9214LA-AL-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) and precision voltage/current detection circuitry for 1-cell rechargeable battery packs. It provides overcharge (VCU = 4.25V ±25mV), overdischarge (VDL = 2.50V ±35mV), discharge/charge overcurrent (VDOC = 0.15V ±15mV, VCOC = −0.10V ±15mV), short-circuit (VSHORT = 0.55V ±100mV), and overvoltage charger (VOVCHG = 8.0V ±2V) protection with fixed delay timing. Used in portable power tools and medical handheld devices requiring compact, low-quiescent-power battery safety.

For engineers reviewing the AP9214LA-AL-HSB-7 datasheet, AP9214LA-AL-HSB-7 pinout, AP9214LA-AL-HSB-7 application, or AP9214LA-AL-HSB-7 equivalent, this page delivers verified functional architecture, validated pin assignments for U-DFN2535-6 (Type B, Option 1), confirmed protection thresholds across temperature, and real-world selection guidance against comparable battery protection ICs with integrated MOSFETs.

Technical Context

The AP9214LA-AL-HSB-7 implements dual independent protection paths: one for charge control (via S2–VM sensing and G2 gate drive) and one for discharge control (via S1–VM sensing and G1 gate drive), both sharing a common EP drain. Its logic circuit uses internal level-shifted comparators to monitor VDD–VSS (cell voltage) and VM–VSS (current-sense voltage drop across R2), triggering MOSFET shutdown when thresholds are exceeded for specified delay durations (e.g., tCU = 1.0s typ, tSHORT = 10μs typ).

It supports factory-configurable options including auto-wake-up mode (no external charger required to exit overdischarge), 0V battery charge enable (V0CHA = 1.2V min), and selectable overcharge release behavior (latch vs. auto-release). The built-in RVMD (300 kΩ typ) and RVMS (30 kΩ typ) pull-up/pull-down resistors eliminate external components for VM biasing during fault recovery.

Key Specifications

Pinout & Package

AP9214LA-AL-HSB-7 is housed in a thermally enhanced U-DFN2535-6 (Type B) package with exposed drain pad (EP), optimized for PCB heat dissipation in space-constrained battery modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S-8261A and RP507K001B, AP9214LA-AL-HSB-7 uniquely integrates dual N-channel MOSFETs with matched on-resistance, supports factory-set 0V charge and auto-wake-up, and achieves the lowest normal-mode IQ (3.0µA) - making it optimal for compact, long-shelf-life, and maintenance-free Li+ systems.

Availability

AP9214LA-AL-HSB-7 is available at Aetrix Electronics and suitable for portable power tools, medical handheld devices, Bluetooth headsets, and IoT asset trackers requiring stable component supply, consistent parametric performance across temperature, and long-term lifecycle support.

Supply support for AP9214LA-AL-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 belongs to Diodes' battery protection IC product line, engineered specifically for high-reliability, space-constrained 1-cell Li+ battery packs in consumer, industrial, and medical equipment where integration, low IQ, and configurable safety features are critical.

FAQ

What is the difference between AP9214LA and AP9214L?

The 'A' suffix denotes auto-wake-up functionality: AP9214LA exits overdischarge state autonomously when battery voltage rises above VDU, whereas AP9214L requires external charger connection to recover. Both share identical protection thresholds, MOSFET specs, and pinout. The HSB-7 variant corresponds to Pin-Out Option 1 per datasheet DS38413 Rev. 4-3.

Can AP9214LA-AL-HSB-7 support 2S battery configurations?

No - AP9214LA-AL-HSB-7 is strictly rated for 1-cell Li+ operation (VDD–VSS = 1.5–5.5V). For 2S (7.2V–8.4V) packs, use dedicated 2-cell protectors like Diodes' AP9221 or external voltage dividers with isolation, which void the device's safety certification and invalidate its overvoltage protection logic.

What is the maximum continuous discharge current supported?

Based on thermal limits and RSS(ON) = 13 mΩ, AP9214LA-AL-HSB-7 supports up to 7.1A continuous discharge at +70°C ambient (PD = 1000 mW max). At +25°C, derating allows ~9.0A, but PCB copper area under EP pad and ambient airflow determine actual capability - typical designs target ≤5A for reliability.

How does the 0V battery charge function operate electrically?

When battery voltage is 0V, internal circuitry detects VDD < 0.45V (V0INH) and inhibits MOSFET conduction. As charger applies voltage, once VDD reaches ≥1.2V (V0CHA), the IC activates and enables S2 gate drive, permitting charge current flow. This occurs without external components or microcontroller intervention.