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Diodes Incorporated AP9211SA-AC-HAC-7
- Part No.:
- AP9211SA-AC-HAC-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP9211SA-AC-HAC-7.pdf
- Description:
- IC BATT PROT LI-ION 1CELL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,165
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Product details
Overview
AP9211SA-AC-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 (4.375 V / 2.500 V), discharge overcurrent threshold (0.095 V), and fixed 8.0 V overvoltage charger protection - deployed in portable power tools, Bluetooth headsets, and wearable medical monitors.
For engineers reviewing the AP9211SA-AC-HAC-7 datasheet, AP9211SA-AC-HAC-7 pinout, AP9211SA-AC-HAC-7 application, or AP9211SA-AC-HAC-7 equivalent, key selection criteria include integrated MOSFET RSS(ON) (27 mΩ typ.), 0.1 µA power-down current, auto-wake-up capability, and U-DFN2030-6 (Type C) thermal pad layout requirements.
Technical Context
The AP9211SA-AC-HAC-7 implements dual independent protection paths: charge control via S2–VM sensing with -0.095 V overcurrent threshold and discharge control via S1–VM sensing with 0.095 V threshold, both referenced to VSS. Its logic circuit includes fixed-delay comparators (±20% accuracy at +25°C) and selectable auto-wake-up mode that maintains monitoring during overdischarge without external wake signal.
It features built-in high-accuracy voltage references (±25 mV overcharge detection), programmable hysteresis (0.200 V overcharge, 0.400 V overdischarge), and an overvoltage charger detector (8.0 V ±2 V) with immediate response-no delay-between VDD and VM pins, enabling robust charger fault isolation in compact battery packs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCU Detection | 4.375 V ±25 mV - triggers charge MOSFET shutdown when cell voltage exceeds safe Li+ upper limit |
| VDL Detection | 2.500 V ±35 mV - disables discharge MOSFET before deep discharge damages cell longevity |
| VDOC Threshold | 0.095 V ±15 mV - corresponds to ~3.5 A continuous discharge current with 27 mΩ RSS(ON) |
| IQ (Normal) | 3.0 µA typ. @ 3.5 V - enables multi-year shelf life in always-connected battery packs |
| IPDN | 0.1 µA max @ 1.8 V - supports ultra-low-power sleep during storage or transport |
| RSS(ON) | 27 mΩ typ. @ VDD = 4.0 V - limits conduction loss and self-heating under 5 A load |
| tCU Delay | Fixed time (value not specified in DS37596 Rev. 6-3) - eliminates need for external RC timing components |
Pinout & Package
AP9211SA-AC-HAC-7 is housed in a thermally enhanced U-DFN2030-6 (Type C) package with exposed thermal pad (EP), requiring PCB copper pour for effective heat dissipation. Pin 4 (NC) must remain unconnected; EP serves as common drain for both internal MOSFETs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S1) | Discharge MOSFET source | Connects directly to battery negative terminal; senses discharge current via VM–S1 voltage drop |
| 2 (VSS) | Negative supply reference | System ground return path; used as reference for all voltage comparators and current-sense thresholds |
| 3 (VDD) | Positive supply input | Connected to battery positive through current-limiting resistor R1 (330–470 Ω); powers internal logic and gate drivers |
| 4 (NC) | No connection | Internally unconnected; must be left floating per datasheet - no routing or soldering allowed |
| 5 (VM) | Charge/discharge current sense node | Monitors voltage between S1/S2 and VSS; detects overcurrent, short-circuit, and charger status via R2 bias network |
| 6 (S2) | Charge MOSFET source | Connects to charger negative input; enables bidirectional current monitoring with polarity-sensitive thresholds |
| EP | Common drain / thermal pad | Electrically tied to both MOSFET drains; requires large copper area on PCB for thermal management and low-impedance grounding |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual N-MOSFETs | Eliminates discrete FET layout complexity and reduces BOM count by two devices in 1-cell pack designs |
| Auto-wake-up mode (SA variant) | Enables autonomous recovery from overdischarge without external charger presence - critical for field-deployed IoT sensors |
| 0V battery charge permission | Allows safe reactivation of deeply discharged cells (0 V) using standard CC/CV chargers, extending usable battery life |
| Overvoltage charger detection | 8.0 V ±2 V threshold blocks non-compliant or faulty chargers before they damage protected cell or IC |
| Fixed internal delay timers | Removes requirement for external timing capacitors, improving board-level reliability and reducing footprint |
Applications
| Power Tool Battery Packs | Wireless Headset Batteries |
|---|---|
|
Use Scenario: Cordless drill battery packs subjected to high-pulse discharge (≥10 A) and rapid recharge cycles. IC Role / Device Role / Timing Role: Primary protection controller enforcing overdischarge cutoff at 2.500 V and discharge overcurrent limit at 0.095 V to prevent cell venting. Use Value: Integrated 27 mΩ MOSFETs reduce thermal stress vs. discrete solutions, enabling smaller form factor without derating. |
Use Scenario: Compact Bluetooth earbuds requiring ultra-low quiescent current to maintain >6-month shelf life. IC Role / Device Role / Timing Role: Dual-mode supervisor - normal operation at 3.0 µA, power-down at 0.1 µA - with auto-wake-up on voltage rise. Use Value: Eliminates need for external wake-up circuitry or mechanical reset, simplifying mechanical design and assembly. |
| Wearable Medical Monitors | Smart Pen Batteries |
|
Use Scenario: FDA-regulated glucose meters powered by sealed 1-cell Li+ batteries with strict safety certification requirements. IC Role / Device Role / Timing Role: Safety-critical protector with ±25 mV overcharge accuracy and immediate 8.0 V overvoltage shutdown to meet IEC 62133 compliance. Use Value: Factory-configured 0V charge permission allows full recovery after accidental deep discharge during long-term patient storage. |
Use Scenario: Digitally enabled stylus pens with embedded memory and BLE connectivity, operating from coin-cell-sized 1-cell packs. IC Role / Device Role / Timing Role: Space-constrained protector leveraging U-DFN2030-6 (2.0 × 3.0 mm) footprint and EP thermal pad for passive cooling. Use Value: Single-chip integration replaces 3–4 discrete components (FETs, sense resistor, comparator, timer), cutting PCB area by >40%. |
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-8261AAL-M6T1U | Separate charge/discharge FET control; no integrated MOSFETs; 2.0 µA IQ; 3.0 V min VDD | Requires external dual-N MOSFETs and sense resistors; higher BOM cost and layout complexity | Select when discrete FET selection (e.g., low-RDS(on), high-ID rating) is required beyond AP9211's 9 A rating |
| Ricoh RP502K001A-TR-F | Integrated dual-N FETs; 0.05 V discharge OCP threshold; 1.5 µA IQ; no overvoltage charger detection | Lacks 8.0 V charger overvoltage protection - requires external TVS or zener for same safety level | Select for ultra-low-power wearables where charger overvoltage risk is mitigated externally and lower OCP threshold is needed |
Compared with S-8261AAL-M6T1U and RP502K001A-TR-F, the AP9211SA-AC-HAC-7 uniquely combines integrated MOSFETs, 8.0 V charger overvoltage blocking, and auto-wake-up in a 2.0 × 3.0 mm package - delivering lowest component count and highest functional integration for space- and safety-constrained 1-cell systems.
Availability
AP9211SA-AC-HAC-7 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headset batteries, and wearable medical monitors requiring stable component supply, automotive-grade traceability, and long-lifecycle support.
Supply support for AP9211SA-AC-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 manufacturing certified to IATF 16949 and product qualification per AEC-Q100/101 standards.
The AP9211 belongs to Diodes' Battery Protection IC product line, engineered specifically for high-reliability, space-constrained 1-cell Li+ applications where integration, low quiescent current, and comprehensive fault coverage are mandatory.
FAQ
What is the function of the NC pin (Pin 4) on AP9211SA-AC-HAC-7?
Pin 4 is internally unconnected and must remain floating - no trace, pad, or solder connection is permitted. This is explicitly mandated in the datasheet to prevent unintended coupling or latch-up. Connecting it risks malfunction or permanent damage due to undefined internal node behavior.
Does AP9211SA-AC-HAC-7 support 0V battery charging, and how is it enabled?
Yes - the "SA" suffix denotes factory-configured 0V battery charge permission. When battery voltage reaches 0 V, the IC allows charging to resume once VBAT ≥ 1.2 V (typical), without requiring external intervention. This setting is fixed at manufacture and cannot be altered in-circuit.
How does the auto-wake-up mode differ from power-down mode in AP9211SA-AC-HAC-7?
Auto-wake-up (SA) keeps internal comparators active during overdischarge, allowing automatic recovery when VBAT rises above VDU (2.900 V). Power-down mode (standard AP9211S) shuts down logic entirely; recovery requires external charger connection to pull VM high via R2 - no autonomous wake-up occurs.
What is the maximum continuous discharge current supported by AP9211SA-AC-HAC-7?
Based on RSS(ON) = 27 mΩ (typ) and TJ ≤ 150°C, the device supports 9.0 A continuous drain current at +25°C ambient (JEDEC High-K board). Derating applies at elevated temperatures: 7.1 A at +70°C. Thermal design must ensure EP pad copper area meets datasheet layout guidelines.
AP9211SA-AC-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-AC-HAC-7 FAQ
1.How can I place an order for AP9211SA-AC-HAC-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9211SA-AC-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-AC-HAC-7 reliable?
The price and inventory of AP9211SA-AC-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-AC-HAC-7 is usually 5 days.
3.What payment methods are accepted for AP9211SA-AC-HAC-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9211SA-AC-HAC-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9211SA-AC-HAC-7?
AP9211SA-AC-HAC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9211SA-AC-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-AC-HAC-7?
For technical support, including AP9211SA-AC-HAC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9211SA-AC-HAC-7 requirements.
6.How does Aetrix verify that AP9211SA-AC-HAC-7 is sourced from the original manufacturer or authorized distributors?
All AP9211SA-AC-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-AC-HAC-7 meets industry standards.
7.What is the process for return or replacement of AP9211SA-AC-HAC-7?
All AP9211SA-AC-HAC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP9211SA-AC-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-AC-HAC-7 part is unused and in its original packaging.
Return procedure for AP9211SA-AC-HAC-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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