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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Battery Management

Diodes Incorporated AP9211SA-AL-HAC-7

Name: AP9211SA-AL-HAC-7
Brand: Diodes Incorporated
SKU: AP9211SA-AL-HAC-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP9211SA-AL-HAC-7

Manufacturer:: Diodes Incorporated

Category:: Battery Management

Package:: 6-UDFN Exposed Pad

Datasheet:: AP9211SA-AL-HAC-7.pdf

Description:: IC BATT PROT LI-ION 1CELL 6UDFN

Quantity:: RFQ Add To RFQ list

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Inventory:1,125

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Product details

Overview

AP9211SA-AL-HAC-7 from Diodes Incorporated is a single-chip 1-cell Li⁺ battery protection IC integrating dual N-channel MOSFETs (common-drain configuration), overcharge/overdischarge voltage detection (±25 mV accuracy at +25°C), discharge/charge overcurrent protection (±15 mV accuracy), and short-circuit detection (±100 mV). It operates in automotive-grade ambient range (−40°C to +85°C) and supports 0V battery charge permission and selectable auto-wake-up mode - deployed in portable power tools, Bluetooth headsets, and medical wearable battery packs.

For engineers reviewing the AP9211SA-AL-HAC-7 datasheet, AP9211SA-AL-HAC-7 pinout, AP9211SA-AL-HAC-7 application, or AP9211SA-AL-HAC-7 equivalent, key selection criteria include its fixed 8.0 V overvoltage charger detection threshold, 27 mΩ typical R_SS(ON) per MOSFET at V_DD = 4.0 V, 3.0 µA normal-mode quiescent current, and U-DFN2030-6 (Type C) thermal-pad package for high-current battery path integrity.

Technical Context

The AP9211SA-AL-HAC-7 implements independent analog comparators for overcharge (VCU), overdischarge (VDL), discharge overcurrent (VDOC), short-circuit (VSHORT), and charge overcurrent (VCOC), each with programmable thresholds and ±20% delay time accuracy. Its logic circuit controls two integrated N-MOSFETs via level-shifted gate drivers, enabling bidirectional current monitoring through the VM sense node.

It features dual operating modes: auto-wake-up (enabled in SA variant) allows recovery from overdischarge without external charging stimulus, while the built-in RVMD/RVMS internal resistors enable VM pin pull-up/pull-down during fault states to sustain accurate current sensing and state retention across load transitions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CU Detection Voltage	4.375 V ±25 mV - sets precise upper Li⁺ cell voltage limit before disabling charge FET
V_DL Detection Voltage	2.500 V ±35 mV - triggers discharge cutoff to prevent deep discharge damage to 1-cell pack
V_DOC Threshold	0.095 V ±15 mV - corresponds to ~3.5 A discharge current with 27 mΩ R_SS(ON)
R_SS(ON) (per FET)	27 mΩ typ. @ V_DD = 4.0 V - enables <9 W conduction loss at 9 A continuous drain current
I_Q (Normal Mode)	3.0 µA typ. @ +25°C - extends shelf life and standby runtime in always-connected devices
t_SHORT Delay	1.2 µs typ. - provides sub-microsecond response to hard shorts, protecting cells and PCB traces
V_OVCHG	8.0 V ±2 V - safeguards against faulty >5 V chargers by disabling charge path before MOSFET breakdown

Pinout & Package

AP9211SA-AL-HAC-7 uses the U-DFN2030-6 (Type C) thermally enhanced package with exposed thermal pad (EP) tied to common drain of both MOSFETs; requires ≥20 mm² copper pour on PCB for thermal management.

Pin/Terminal	Circuit Role	Design Meaning
1 S1	Source of discharge MOSFET	Connects directly to battery negative terminal; carries full load current during discharge
2 VSS	Negative power supply reference	Ground return for internal logic and comparator references; must be low-impedance
3 VDD	Positive supply input	Connected to battery positive via R1 (330–470 Ω); powers internal circuitry and gate drivers
4 NC	No connection	Floating pin; must not be soldered or routed to avoid parasitic coupling
5 VM	Current-sense input	Monitors voltage drop across R2 to detect charge/discharge current direction and magnitude
6 S2	Source of charge MOSFET	Connects to charger negative input; enables reverse-current blocking during charge
EP	Common drain / thermal pad	Internally connects drains of both MOSFETs; must be soldered to large copper area for heat dissipation

Key Features

Feature	Design Value
Integrated dual N-MOSFETs	Eliminates discrete FET layout complexity and reduces BOM count by two components
Auto-wake-up mode (SA variant)	Enables self-recovery from overdischarge when battery voltage rises above V_DU, no charger required
0V battery charge permission	Allows safe reactivation of deeply discharged cells (<0.45 V) using standard CC/CV chargers
Fixed overvoltage charger detection	8.0 V threshold blocks non-compliant >5 V chargers before cell overvoltage occurs
Programmable hysteresis	Configurable V_CU/V_CL and V_DL/V_DU gaps prevent oscillation near trip points

Applications

Power Tool Battery Packs

Wireless Earbud Charging Cases

Use Scenario: 18 V cordless drill battery with 5S1P Li-ion configuration and embedded fuel gauge.

IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage, discharge current, and short-circuit events; asserts cutoff within 1.2 µs of short detection.

Use Value: Prevents thermal runaway during stall-load conditions while maintaining <3 µA quiescent draw during storage.

Use Scenario: Compact charging case powering dual TWS earbuds with 300 mAh 1-cell Li⁺ battery.

IC Role / Device Role / Timing Role: Dual-function protector enabling 0V charge recovery and auto-wake-up after deep discharge during travel.

Use Value: Eliminates user "bricking" from accidental full discharge; extends usable shelf life beyond 12 months.

Portable Medical Monitors

Smart Wearable Fitness Trackers

Use Scenario: FDA-cleared handheld ECG device with replaceable 1-cell Li⁺ battery and USB-C charging.

IC Role / Device Role / Timing Role: Safety-critical protector enforcing ±25 mV overcharge accuracy and −40°C to +85°C operation.

Use Value: Meets IEC 62133-2 compliance for medical battery systems without external supervision circuitry.

Use Scenario: 7-day wearable tracker with sleep-mode current <5 µA and daily recharge cycles.

IC Role / Device Role / Timing Role: Low-I_Q protector managing charge/discharge paths while supporting 0V recovery after extended non-use.

Use Value: Reduces system-level standby current by 60% vs. discrete protection solutions with external FETs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Seiko Instruments S-8261A	Discrete FET solution; no integrated MOSFETs; higher BOM count and layout sensitivity	Lacks auto-wake-up and 0V charge; requires external timing capacitors for delays	Choose only if legacy design reuse or discrete FET control is mandatory
Ricoh RP507K001B	Single-chip with integrated FETs but fixed 4.25 V V_CU; no 0V charge option	Supports only power-down mode (no auto-wake-up); lower temperature rating (−30°C to +75°C)	Select when cost sensitivity outweighs operational flexibility and extended temp range

Compared with S-8261A and RP507K001B, the AP9211SA-AL-HAC-7 uniquely combines auto-wake-up, 0V charge permission, ±25 mV V_CU accuracy, and U-DFN2030-6 thermal performance - making it optimal for compact, high-reliability consumer and medical wearables requiring zero-maintenance battery safety.

Availability

AP9211SA-AL-HAC-7 is available at Aetrix Electronics and suitable for portable power tools, wireless earbud charging cases, and portable medical monitors requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.

Supply support for AP9211SA-AL-HAC-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 ICs, with ISO/TS 16949-certified manufacturing and AEC-Q100/101 qualification capabilities.

The AP9211 belongs to Diodes' Battery Protection IC product line, engineered specifically for space-constrained, high-safety 1-cell Li⁺ applications where integration, accuracy, and ultra-low quiescent current are critical.

FAQ

What is the function of the VM pin in AP9211SA-AL-HAC-7?

The VM pin serves as the bidirectional current-sense input: during discharge, voltage between VM and VSS reflects current through the discharge FET's R_SS(ON); during charge, it senses reverse current via the charge FET. Internal RVMS/RVMD resistors pull VM to VSS or VDD during fault states to maintain sensing integrity and enable auto-wake-up recovery.

Does AP9211SA-AL-HAC-7 support overvoltage protection for the charger input?

Yes - it includes a dedicated overvoltage charger detection circuit with fixed 8.0 V (±2 V) threshold between VDD and VM pins. When exceeded, the charge MOSFET turns off immediately (no delay), and re-enables only when voltage drops below 7.3 V (±2 V), protecting against non-compliant >5 V chargers.

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

Auto-wake-up (SA variant) keeps the IC active in overdischarge state, allowing recovery when battery voltage rises above V_DU without external charging. Power-down mode (standard version) forces deep sleep (<0.1 µA), requiring charger connection to exit overdischarge - AP9211SA-AL-HAC-7 is factory-configured for auto-wake-up.

What is the maximum continuous current supported by the integrated MOSFETs?

The integrated dual N-MOSFETs support 9.0 A continuous drain current at +25°C (7.1 A at +70°C), based on 27 mΩ typical R_SS(ON) and 1000 mW package power dissipation. Actual current capability depends on PCB copper area, ambient temperature, and duty cycle - thermal pad (EP) must be fully soldered to ≥20 mm² copper.

AP9211SA-AL-HAC-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 6-UDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Function:: Battery Protection

Battery Chemistry:: Lithium Ion

Number of Cells:: 1

Fault Protection:: Over Current, Over Voltage

Interface:: -

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: U-DFN2030-6 (Type C)

AP9211SA-AL-HAC-7 FAQ

1.How can I place an order for AP9211SA-AL-HAC-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP9211SA-AL-HAC-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AP9211SA-AL-HAC-7 reliable?

The price and inventory of AP9211SA-AL-HAC-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9211SA-AL-HAC-7 is usually 5 days.

3.What payment methods are accepted for AP9211SA-AL-HAC-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9211SA-AL-HAC-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP9211SA-AL-HAC-7?

AP9211SA-AL-HAC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP9211SA-AL-HAC-7 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AP9211SA-AL-HAC-7?

For technical support, including AP9211SA-AL-HAC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9211SA-AL-HAC-7 requirements.

6.How does Aetrix verify that AP9211SA-AL-HAC-7 is sourced from the original manufacturer or authorized distributors?

All AP9211SA-AL-HAC-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP9211SA-AL-HAC-7 meets industry standards.

7.What is the process for return or replacement of AP9211SA-AL-HAC-7?

All AP9211SA-AL-HAC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP9211SA-AL-HAC-7, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AP9211SA-AL-HAC-7 part is unused and in its original packaging.

Return procedure for AP9211SA-AL-HAC-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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