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Diodes Incorporated AP9211SA-AK-HAC-7
- Part No.:
- AP9211SA-AK-HAC-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP9211SA-AK-HAC-7.pdf
- Description:
- IC BATT PROT LI-ION 1CELL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,364
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Product details
Overview
AP9211SA-AK-HAC-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (common-drain configuration) in a U-DFN2030-6 (Type C) package. It delivers overcharge (4.375 V ±25 mV), overdischarge (2.500 V ±35 mV), discharge/charge overcurrent (±15 mV accuracy), and short-circuit protection for 1-cell lithium-ion packs, with fixed delay timing and 0V battery charge permission.
For engineers reviewing the AP9211SA-AK-HAC-7 datasheet, AP9211SA-AK-HAC-7 pinout, AP9211SA-AK-HAC-7 application, or AP9211SA-AK-HAC-7 equivalent, key selection criteria include integrated MOSFET RSS(ON) (27 mΩ typ.), ultra-low quiescent current (3.0 µA normal mode, 0.1 µA power-down), and factory-configured auto-wake-up mode with 0V charge enable - critical for portable medical devices, power tools, and IoT battery packs requiring fail-safe shutdown and recovery without external intervention.
Technical Context
The AP9211SA-AK-HAC-7 implements dual independent protection paths: one for charging (controlled via S2/VM/VDD sensing) and one for discharging (via S1/VM/VSS), each with dedicated voltage and current thresholds and configurable hysteresis. Its internal logic uses fixed-delay comparators with ±20% timing tolerance to eliminate external RC networks.
It features two selectable operating modes: power-down (0.1 µA sleep current, requires charger to wake) or auto-wake-up (remains active in overdischarge, resumes on VBAT ≥ VDU + tDLR). The VM pin serves as bidirectional current-sense input, with internal pull-up (RVMD) and pull-down (RVMS) resistors activated selectively per fault state to maintain accurate detection under load transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCU | 4.375 V ±25 mV - precise overcharge detection threshold enabling safe full-charge termination at 4.2 V nominal cells. |
| VDL | 2.500 V ±35 mV - reliable low-voltage cutoff preventing deep discharge damage to Li+ cell chemistry. |
| VDOC | 0.150 V ±15 mV - discharge overcurrent trip point calibrated for 1.0 A load with 27 mΩ RSS(ON). |
| ID (Continuous) | 9.0 A @ TA = 25°C - supports high-current portable applications such as cordless vacuum cleaners and e-bikes. |
| IQ (Normal) | 3.0 µA typ. @ VDD = 3.5 V - extends shelf life and standby runtime in battery-powered IoT sensors. |
| RSS(ON) | 27 mΩ typ. @ VDD = 4.0 V - minimizes conduction loss and thermal rise in compact PCB layouts. |
| tSHORT | 1.0 µs typ. - enables sub-microsecond short-circuit response to prevent catastrophic failure during accidental shorts. |
Pinout & Package
AP9211SA-AK-HAC-7 is housed in a thermally enhanced U-DFN2030-6 (Type C) package with exposed thermal pad (EP), optimized for space-constrained battery pack PCBs and requiring minimal external components.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S1) | Source of discharge MOSFET | Connects directly to battery negative terminal; carries full discharge current path. |
| 2 (VSS) | Negative power supply reference | Ground return for internal logic and protection comparators; 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; must not be soldered or tied to any net to avoid functional interference. |
| 5 (VM) | Current-sense and charger status 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 bidirectional current control with S1. |
| EP | Common drain / thermal pad | Internally ties both MOSFET drains; requires large copper pour for heat dissipation and low-inductance grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual N-MOSFETs | Eliminates discrete FET layout complexity and matching issues; common-drain topology simplifies PCB routing. |
| Factory-set auto-wake-up mode | Enables autonomous recovery from overdischarge without charger presence - essential for unattended remote devices. |
| 0V battery charge permission | Allows safe reactivation of deeply depleted cells (e.g., after long-term storage), improving field reliability. |
| Fixed internal delay timers | Removes need for external RC networks, reducing BOM count and board area while ensuring consistent timing behavior. |
| Overvoltage charger detection (8.0 V) | Protects against faulty or mismatched chargers by disabling charge path when VCHG > 8.0 V, independent of cell voltage. |
Applications
| Power Tool Battery Packs | Medical Wearable Monitors |
|---|---|
|
Use Scenario: Cordless drill/driver battery packs subject to high pulse currents and mechanical shock-induced shorts. IC Role / Device Role / Timing Role: Primary protection controller enforcing overcurrent (1.0 A threshold), short-circuit (<1 µs response), and overtemperature-safe voltage limits. Use Value: Prevents thermal runaway during stall conditions and enables rapid fault isolation without compromising runtime efficiency. |
Use Scenario: Disposable glucose monitors and ECG patches requiring multi-year shelf life and reliable first-power activation. IC Role / Device Role / Timing Role: Low-quiescent protector maintaining <3.0 µA draw in normal mode and <0.1 µA in power-down, with 0V charge enable. Use Value: Extends shelf life beyond 36 months and ensures device functionality even after prolonged storage at 0 V battery voltage. |
| Bluetooth Headset Batteries | Smart Lock Backup Power |
|
Use Scenario: Ultra-thin Li+ cells in wireless earbuds where PCB real estate is limited to <5 mm². IC Role / Device Role / Timing Role: Single-chip solution replacing discrete protection IC + dual MOSFETs, using U-DFN2030-6 footprint. Use Value: Reduces component count by 3× and total solution height to <0.55 mm, meeting stringent mechanical envelope requirements. |
Use Scenario: Door lock backup batteries that must remain operational for >5 years without maintenance or user interaction. IC Role / Device Role / Timing Role: Auto-wake-up enabled protector sustaining monitoring function during deep discharge and resuming on voltage recovery. Use Value: Guarantees lock operation after extended power outage without requiring manual reset or battery replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP9211SA-AK-HAC-7 | Auto-wake-up mode, 0V charge enabled, VCU = 4.375 V, VDL = 2.500 V | Designed for systems requiring autonomous recovery from overdischarge without external trigger | Select when battery must self-recover after deep discharge in unattended deployments. |
| AP9211SA-AJ-HAC-7 | Same package and pinout; power-down mode (not auto-wake), 0V charge inhibited | Requires charger connection to exit overdischarge; suited for consumer electronics with guaranteed charging cycles | Prefer for cost-sensitive applications where charger availability is assured and wake-up autonomy is unnecessary. |
Compared with AP9211SA-AJ-HAC-7, the AP9211SA-AK-HAC-7 provides field-deployable resilience through auto-wake-up and 0V charge, while AP9211SA-AK-HAC-7 trades slightly higher standby current (vs. deep sleep) for guaranteed operational continuity in infrastructure-critical battery systems.
Availability
AP9211SA-AK-HAC-7 is available at Aetrix Electronics and suitable for power tool battery packs, medical wearable monitors, and smart lock backup power systems requiring stable component supply, long-lifecycle support, and automotive-grade reliability assurance.
Supply support for AP9211SA-AK-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 solutions, with design centers across Asia, Europe, and the US, and ISO/TS 16949-certified manufacturing facilities.
The AP9211 belongs to Diodes' Battery Protection IC product line, engineered specifically for high-reliability, space-constrained 1-cell Li+ applications demanding integrated MOSFETs, ultra-low IQ, and configurable fault recovery behavior.
FAQ
What is the maximum continuous discharge current supported by AP9211SA-AK-HAC-7?
The AP9211SA-AK-HAC-7 supports 9.0 A continuous drain current at +25°C ambient with VGS = 4.5 V, verified per JEDEC High-K board test conditions. Derating applies above +25°C: 7.1 A at +70°C. This rating assumes proper PCB copper area on the EP pad for thermal dissipation and is validated with the specified U-DFN2030-6 (Type C) package mounting.
Does AP9211SA-AK-HAC-7 require external resistors for overcurrent detection?
No external sense resistors are required for overcurrent detection. The AP9211SA-AK-HAC-7 uses the integrated MOSFET's RSS(ON) (27 mΩ typ.) as the current-sense element, measuring voltage drop between VM and VSS/S2. Only R1 (330–470 Ω) and R2 (2.7 kΩ typical) are needed for VDD stabilization and VM biasing - no separate shunt resistor is used.
How does the auto-wake-up function operate during overdischarge?
In overdischarge, the AP9211SA-AK-HAC-7 remains powered and monitors battery voltage. When VBAT rises to ≥ VDU (2.900 V) and sustains that level for ≥ tDLR (overdischarge release delay), it automatically re-enables the discharge MOSFET. This occurs without charger connection, enabling recovery in unattended devices like remote sensors or security hardware.
Can AP9211SA-AK-HAC-7 protect against overvoltage from an incompatible charger?
Yes. The AP9211SA-AK-HAC-7 includes a dedicated overvoltage charger detection circuit monitoring VDD–VVM. If this differential exceeds 8.0 V (±2 V), the charge MOSFET is immediately disabled - with no delay - protecting the cell from overvoltage stress caused by mismatched or malfunctioning chargers.
AP9211SA-AK-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-AK-HAC-7 FAQ
1.How can I place an order for AP9211SA-AK-HAC-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9211SA-AK-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-AK-HAC-7 reliable?
The price and inventory of AP9211SA-AK-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-AK-HAC-7 is usually 5 days.
3.What payment methods are accepted for AP9211SA-AK-HAC-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9211SA-AK-HAC-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9211SA-AK-HAC-7?
AP9211SA-AK-HAC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9211SA-AK-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-AK-HAC-7?
For technical support, including AP9211SA-AK-HAC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9211SA-AK-HAC-7 requirements.
6.How does Aetrix verify that AP9211SA-AK-HAC-7 is sourced from the original manufacturer or authorized distributors?
All AP9211SA-AK-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-AK-HAC-7 meets industry standards.
7.What is the process for return or replacement of AP9211SA-AK-HAC-7?
All AP9211SA-AK-HAC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP9211SA-AK-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-AK-HAC-7 part is unused and in its original packaging.
Return procedure for AP9211SA-AK-HAC-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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