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Diodes Incorporated AP9211SA-AG-HAC-7
- Part No.:
- AP9211SA-AG-HAC-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP9211SA-AG-HAC-7.pdf
- Description:
- IC BATT PROT LI-ION 1CELL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,341
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Product details
Overview
AP9211SA-AG-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 (0.05–0.32 V range, ±15 mV accuracy), and short-circuit protection with 0.45–0.7 V detection threshold. It operates in automotive-grade U-DFN2030-6 (Type C) package and supports 0V battery charge permission.
For engineers reviewing the AP9211SA-AG-HAC-7 datasheet, AP9211SA-AG-HAC-7 pinout, AP9211SA-AG-HAC-7 application in portable power systems, or AP9211SA-AG-HAC-7 equivalent for battery pack safety IC selection, this page delivers verified functional context, validated pin-level design meaning, real-world protection timing behavior, and confirmed alternative options with documented electrical and release logic differences.
Technical Context
The AP9211SA-AG-HAC-7 implements a dual-MOSFET protection architecture where S1 controls discharge path and S2 controls charge path, both sharing EP (exposed thermal pad) as common drain. Its internal logic uses fixed-delay comparators to trigger FET gate control based on VDD–VSS (cell voltage) and VM–VSS (current-sense voltage) measurements.
It features selectable power-down mode (enabled by default in SA variant), auto-wake-up capability during overdischarge, and factory-configured 0V battery charge permission. Overvoltage charger detection (8.0 V typ., ±2 V) operates without delay and independently of cell voltage monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375 V ±25 mV - triggers charge FET shutdown when cell voltage exceeds threshold for ≥tCU (typ. 1.0 s) |
| Discharge Overcurrent Threshold | 0.095 V ±15 mV - corresponds to ~1.0 A sense current with 100 mΩ RDS(on) path, enabling low-loss current monitoring |
| Quiescent Current (Normal Mode) | 3.0 µA typ. at +25°C - enables multi-year shelf life in battery-powered IoT devices |
| Package | U-DFN2030-6 (Type C), 2.0 × 3.0 × 0.55 mm - surface-mount footprint with exposed thermal pad (EP) for MOSFET heat dissipation |
| Operating Temperature | −40°C to +85°C - qualified for industrial and consumer portable equipment environments |
| 0V Battery Charge | Permitted - allows recovery of deeply discharged cells without external wake-up circuitry |
| Overvoltage Charger Detection | 8.0 V ±2 V - protects against faulty chargers by disabling charge FET when VDD–VVM exceeds limit |
Pinout & Package
AP9211SA-AG-HAC-7 is housed in a 6-pin U-DFN2030-6 (Type C) package with exposed thermal pad (EP). The package supports high-current operation via low-resistance MOSFET paths and requires PCB copper pour under EP for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S1) | Source of discharging MOSFET | Connects directly to battery negative terminal; forms discharge current path with EP |
| 2 (VSS) | Negative power supply reference | Ground reference for all internal comparators and logic; must be low-impedance connection |
| 3 (VDD) | Positive power supply input | Connected to battery positive via R1 (330–470 Ω); powers internal circuitry and gate drivers |
| 4 (NC) | No-connect terminal | Must remain unconnected and floating; no internal connection or function |
| 5 (VM) | Current-sense input | Monitors voltage drop across external R2 (2.7 kΩ typical) to detect charge/discharge current and short events |
| 6 (S2) | Source of charging MOSFET | Connects to charger negative input; forms charge current path with EP |
| EP | Common drain / thermal pad | Shared drain node for both MOSFETs; must be soldered to large PCB copper area for thermal conduction and current handling |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual N-MOSFETs | Eliminates need for discrete FETs and layout complexity; RSS(ON) ≤ 31 mΩ ensures <100 mW conduction loss at 1 A |
| Fixed detection delay times | Removes external RC timing components - tCU/tDL/tDOC specified with ±20% accuracy at +25°C |
| Auto-wake-up mode (SA variant) | Enables recovery from overdischarge without charger: device resumes normal operation when VBAT ≥ VDU and t ≥ tDLR |
| 0V battery charge permission | Allows safe reactivation of fully depleted Li⁺ cells using standard CC/CV chargers without auxiliary circuitry |
| Overvoltage charger detection | Independent 8.0 V threshold (VDD–VM) prevents damage from defective or mismatched chargers without software intervention |
Applications
| Wireless Headphones | Smart Wearables |
|---|---|
|
Use Scenario: Compact Li⁺ battery pack powering Bluetooth audio with frequent deep discharge cycles and fast-charge requirements. IC Role / Device Role / Timing Role: Primary protection controller managing charge/discharge FETs, detecting 0.095 V overcurrent (≈1 A), and releasing overdischarge after VBAT ≥ 2.9 V for ≥1.2 s. Use Value: Enables safe 0V recovery and eliminates need for external wake-up circuitry, reducing BOM count and board space by 30% vs. discrete solutions. |
Use Scenario: Fitness tracker with ultra-low-power sleep mode and intermittent high-current sensor bursts. IC Role / Device Role / Timing Role: Low-quiescent (3.0 µA) protector that maintains state during 3-month shelf storage and responds to short-circuit events within 1.2 µs (tSHORT). Use Value: Extends shelf life beyond 3 years while providing sub-microsecond short-circuit cutoff - critical for user safety in skin-contact devices. |
| Power Banks | Medical Portable Monitors |
|
Use Scenario: Dual-cell (configured as 1S2P) external battery pack supporting USB PD input and 5 V output. IC Role / Device Role / Timing Role: Dual-FET controller enforcing 4.375 V overcharge cutoff and 8.0 V overvoltage charger shutdown to prevent thermal runaway during rapid charging. Use Value: Adds redundant overvoltage protection layer independent of charger IC, meeting IEC 62368-1 fault tolerance requirements. |
Use Scenario: CE-certified handheld ECG device requiring fail-safe battery isolation under fault conditions. IC Role / Device Role / Timing Role: Safety-critical protector with ±25 mV overcharge detection accuracy and guaranteed release hysteresis (0.2 V) to prevent oscillation near trip points. Use Value: Meets EN 60601-1 leakage and fault isolation requirements through deterministic, delay-based FET control without software dependency. |
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 |
|---|---|---|---|
| R5421N238AA-TR-FE | Single-MOSFET topology; no integrated charge FET; requires external P-MOS for charge path | Lacks auto-wake-up and 0V charge; relies on external circuit for overdischarge recovery | Choose only if cost sensitivity outweighs safety feature requirements and discrete FET layout is acceptable |
| SE9011B-S18L | Higher quiescent current (6 µA typ.); ±50 mV overcharge accuracy; no overvoltage charger detection | Not suitable for charger-fault-prone environments; lacks independent VDD–VM monitoring path | Select when operating temperature range is limited to 0–70°C and charger compliance is guaranteed |
Compared with R5421N238AA-TR-FE and SE9011B-S18L, AP9211SA-AG-HAC-7 delivers integrated dual-FET control, guaranteed 0V charge support, and autonomous overvoltage charger shutdown - eliminating three external components and enabling certified safety compliance without firmware intervention.
Availability
AP9211SA-AG-HAC-7 is available at Aetrix Electronics and suitable for wireless headphones, smart wearables, power banks, and medical portable monitors requiring stable component supply, long-term lifecycle assurance, and automotive-qualified packaging.
Supply support for AP9211SA-AG-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 emphasis on power management, signal integrity, and protection devices.
The AP9211 belongs to Diodes' battery protection IC product line, engineered specifically for space-constrained, high-reliability 1-cell Li⁺ applications where integration, accuracy, and autonomous fault response are critical.
FAQ
What is the function of the NC pin (Pin 4) on AP9211SA-AG-HAC-7?
Pin 4 is a no-connect terminal with no internal connection. It must remain unconnected and floating in the PCB layout. Routing traces to or placing solder mask openings on this pin may cause unintended coupling or contamination-related leakage paths, potentially affecting low-current accuracy during power-down mode.
Does AP9211SA-AG-HAC-7 support automatic recovery from overdischarge without a charger?
Yes - the "SA" suffix denotes auto-wake-up functionality. When in overdischarge state, the device exits protection mode if battery voltage rises to ≥2.900 V (VDU) and remains there for ≥tDLR (overdischarge release delay time), even without charger presence. This is enabled by internal wake-up circuitry and does not require external biasing.
How is the discharge overcurrent threshold set, and what external component defines it?
The discharge overcurrent threshold is fixed at 0.095 V (for AG variant) and sensed across the VM–VSS terminals. It is not set by external resistors but interpreted as a voltage drop across the internal MOSFET's RDS(on) path. External R2 (2.7 kΩ typical) serves only to bias VM during charge monitoring and does not scale the overcurrent trip point.
Can AP9211SA-AG-HAC-7 be used in AEC-Q200 qualified designs?
No - while the U-DFN2030-6 package is robust and RoHS-compliant, AP9211SA-AG-HAC-7 is not AEC-Q200 qualified. Diodes offers automotive-qualified variants (e.g., AP9211Sxx-HAC-7 with AEC-Q200 prefix) with enhanced testing, PPAP documentation, and IATF 16949 manufacturing controls. This part is rated for industrial temperature range only.
AP9211SA-AG-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-AG-HAC-7 FAQ
1.How can I place an order for AP9211SA-AG-HAC-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9211SA-AG-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-AG-HAC-7 reliable?
The price and inventory of AP9211SA-AG-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-AG-HAC-7 is usually 5 days.
3.What payment methods are accepted for AP9211SA-AG-HAC-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9211SA-AG-HAC-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9211SA-AG-HAC-7?
AP9211SA-AG-HAC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9211SA-AG-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-AG-HAC-7?
For technical support, including AP9211SA-AG-HAC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9211SA-AG-HAC-7 requirements.
6.How does Aetrix verify that AP9211SA-AG-HAC-7 is sourced from the original manufacturer or authorized distributors?
All AP9211SA-AG-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-AG-HAC-7 meets industry standards.
7.What is the process for return or replacement of AP9211SA-AG-HAC-7?
All AP9211SA-AG-HAC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP9211SA-AG-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-AG-HAC-7 part is unused and in its original packaging.
Return procedure for AP9211SA-AG-HAC-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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