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Diodes Incorporated AP9211S-AN-HAC-7
- Part No.:
- AP9211S-AN-HAC-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP9211S-AN-HAC-7.pdf
- Description:
- IC BATT PROT LI-ION 1CELL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,109
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Product details
Overview
AP9211S-AN-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 overcurrent sensing (0.095 V typ.), and short-circuit protection (0.7 V typ.) - deployed in portable power tools, Bluetooth headsets, and smart wearables requiring compact, low-quiescent-current battery safety.
For engineers reviewing the AP9211S-AN-HAC-7 datasheet, AP9211S-AN-HAC-7 pinout, AP9211S-AN-HAC-7 application, or AP9211S-AN-HAC-7 equivalent, key selection criteria include its U-DFN2030-6 (Type C) package, 0.1 µA max power-down current, factory-configured auto-wake-up mode ('A' suffix), and 0V battery charge permission - all critical for ultra-low-power, self-recoverable battery packs.
Technical Context
The AP9211S-AN-HAC-7 implements independent analog comparators for overcharge (VCU = 4.375 V, ±25 mV), overdischarge (VDL = 2.500 V, ±35 mV), and overcurrent (VDOC = 0.095 V, ±15 mV), each with programmable delay timers (tCU/tDL/tDOC ±20% accuracy at +25°C). Its logic circuit controls two integrated MOSFETs via level-shifted gate drivers to isolate charge/discharge paths.
It features dual internal resistive networks (RVMD = 150–500 kΩ, RVMS = 10–50 kΩ) that dynamically connect VM to VDD or VSS during fault states to enable automatic recovery - specifically supporting auto-wake-up behavior without external charger intervention in overdischarge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Operating Range | 1.5 V to 5.5 V - supports full Li⁺ cell voltage range (2.5–4.4 V) with margin for transient spikes. |
| Overcharge Detection Voltage | 4.375 V ±25 mV - precise cutoff before electrolyte decomposition; fixed release at 4.175 V. |
| Discharge Overcurrent Threshold | 0.095 V ±15 mV - enables accurate current limiting using low-value sense resistor (e.g., 5 mΩ yields 19 A trip). |
| Quiescent Current (Normal) | 3.0 µA typ. @ +25°C - extends shelf life of dormant battery packs for >10 years. |
| Power-Down Current | 0.1 µA max @ VDD = 1.8 V - ensures minimal self-discharge during storage or deep sleep. |
| MOSFET RSS(ON) | 27 mΩ typ. @ VDD = 4.0 V - limits conduction loss to <100 mW at 2 A continuous discharge. |
| Short-Circuit Detection | 0.7 V ±100 mV - triggers sub-1 µs shutdown for loads drawing >140 A through 5 mΩ path. |
Pinout & Package
AP9211S-AN-HAC-7 is housed in a 2.0 mm × 3.0 mm × 0.55 mm U-DFN2030-6 (Type C) package with exposed thermal pad (EP) for enhanced heat dissipation in high-current applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S1) | Source of discharging MOSFET | Connects directly to battery negative terminal; carries full load current during discharge. |
| 2 (VSS) | Negative power supply reference | System ground return for all internal comparators and logic; 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-connect terminal | Internally unconnected; must remain floating per datasheet to avoid malfunction. |
| 5 (VM) | Current-sense and charger-status input | Monitors voltage drop across R2 to detect charge/discharge current polarity and magnitude. |
| 6 (S2) | Source of charging MOSFET | Connects to charger negative input; isolates charging path when VCOC threshold is exceeded. |
| EP | Common drain / thermal pad | Electrically tied to MOSFET drains; requires large PCB copper pour for thermal management and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual N-MOSFETs | Eliminates need for external discrete FETs and gate drivers, reducing BOM count by ≥4 components. |
| Auto-wake-up mode ('A' suffix) | Enables autonomous recovery from overdischarge without charger presence - critical for consumer IoT devices. |
| 0V battery charge permission | Allows safe reactivation of deeply depleted cells (0 V) using standard CC/CV chargers. |
| Fixed overvoltage charger detection | 8.0 V ±2 V cutoff prevents damage from faulty or mismatched chargers in multi-bay systems. |
| Programmable hysteresis | Configurable overcharge (0.1–0.4 V) and overdischarge (0–0.7 V) hysteresis avoids oscillation near thresholds. |
Applications
| Power Tool Battery Packs | Wireless Earbuds |
|---|---|
|
Use Scenario: 18 V cordless drill battery pack 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 in real time. Use Value: Prevents thermal runaway during stall-load conditions via 0.095 V overcurrent detection and sub-1 µs short-circuit response. |
Use Scenario: Compact TWS earbud case with dual 3.7 V/100 mAh Li-ion cells and USB-C charging. IC Role / Device Role / Timing Role: Dual-path protector enabling independent charge/discharge control and zero-volt recovery. Use Value: Extends usable shelf life by 3× via 0.1 µA power-down current and permits recharge after 12+ months of storage. |
| Fitness Tracker Bands | Smart Hearing Aids |
|
Use Scenario: Wrist-worn activity tracker with 3.7 V/45 mAh Li-ion cell and always-on motion sensor. IC Role / Device Role / Timing Role: Low-power safety supervisor managing intermittent charging and microamp-level standby discharge. Use Value: Maintains functional battery voltage window (2.5–4.375 V) while consuming only 3 µA during active monitoring. |
Use Scenario: Rechargeable hearing aid with 3.7 V/30 mAh Li-ion cell and inductive charging base. IC Role / Device Role / Timing Role: Fault-tolerant protector ensuring safe operation under reverse-polarity charger insertion. Use Value: Blocks damaging reverse current flow using built-in R1/R2 current-limiting resistors and VM polarity detection. |
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 | Separate protection IC + external MOSFETs; no integrated FETs; 1.8 µA quiescent current. | Requires ≥4 additional passives; lacks auto-wake-up and 0V charge functions. | Preferred where board space allows discrete layout and long-term cost optimization outweighs integration benefits. |
| Ricoh RP505K | Single-chip solution with integrated MOSFETs; 0.25 µA power-down current; no 0V charge option. | Supports auto-wake-up but prohibits charging from 0 V - unsuitable for deeply discharged medical devices. | Selected when overvoltage charger detection (8.0 V) and tight overdischarge hysteresis (0.4 V) are prioritized over zero-volt recovery. |
Compared with S-8261A and RP505K, AP9211S-AN-HAC-7 uniquely combines integrated MOSFETs, 0.1 µA power-down current, factory-set auto-wake-up, and 0V battery charge permission - making it optimal for space-constrained, maintenance-free consumer electronics requiring guaranteed restart after deep discharge.
Availability
AP9211S-AN-HAC-7 is available at Aetrix Electronics and suitable for portable power tools, wireless earbuds, fitness trackers, smart hearing aids, and other compact Li⁺ battery-powered devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP9211S-AN-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 company specializing in discrete, analog, and mixed-signal ICs, with design centers in Asia, Europe, and the US, and manufacturing in IATF 16949-certified facilities.
The AP9211 belongs to Diodes' Battery Protection IC product line, engineered specifically for high-reliability, ultra-low-power 1-cell Li⁺ battery management in consumer, medical, and industrial portable equipment.
FAQ
What is the function of the NC pin (Pin 4) on AP9211S-AN-HAC-7?
Pin 4 is a no-connect terminal with no internal connection. It must remain electrically floating - soldering it to ground, VDD, or any other net may disrupt internal biasing and cause unpredictable protection behavior or latch-up. The datasheet explicitly prohibits routing or connecting this pin.
Does AP9211S-AN-HAC-7 support reverse-polarity protection for the charger input?
Yes - the device uses R2 (2.7 kΩ typical) between P− and VM to detect reverse charger connection. When polarity is inverted, R2 and R1 limit fault current and trigger immediate discharge MOSFET shutdown. This protects both the battery and charger from damage without requiring external diodes or controllers.
How does the auto-wake-up mode differ from power-down mode in AP9211S-AN-HAC-7?
Auto-wake-up mode (indicated by 'A' in part number) keeps the IC active during overdischarge, allowing recovery when battery voltage rises above VDU (2.900 V) without charger intervention. Power-down mode (blank suffix) forces deep sleep (0.1 µA), requiring charger connection to exit overdischarge - confirmed by DS37596 Rev. 6 Section 8.
Can AP9211S-AN-HAC-7 be used with 2-cell Li⁺ batteries?
No - the AP9211S-AN-HAC-7 is strictly rated for 1-cell operation (VDD to VSS ≤ 5.5 V). Its overcharge detection threshold (4.375 V) and absolute maximum VDS (12 V) are incompatible with series-connected 2-cell stacks (nominal 7.4 V, peak 8.4 V). Using it in 2-cell configurations risks undetected overvoltage and thermal failure.
AP9211S-AN-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)
AP9211S-AN-HAC-7 FAQ
1.How can I place an order for AP9211S-AN-HAC-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9211S-AN-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 AP9211S-AN-HAC-7 reliable?
The price and inventory of AP9211S-AN-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 AP9211S-AN-HAC-7 is usually 5 days.
3.What payment methods are accepted for AP9211S-AN-HAC-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9211S-AN-HAC-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9211S-AN-HAC-7?
AP9211S-AN-HAC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9211S-AN-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 AP9211S-AN-HAC-7?
For technical support, including AP9211S-AN-HAC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9211S-AN-HAC-7 requirements.
6.How does Aetrix verify that AP9211S-AN-HAC-7 is sourced from the original manufacturer or authorized distributors?
All AP9211S-AN-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 AP9211S-AN-HAC-7 meets industry standards.
7.What is the process for return or replacement of AP9211S-AN-HAC-7?
All AP9211S-AN-HAC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP9211S-AN-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 AP9211S-AN-HAC-7 part is unused and in its original packaging.
Return procedure for AP9211S-AN-HAC-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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