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Diodes Incorporated AP9211S-AF-HAC-7
- Part No.:
- AP9211S-AF-HAC-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP9211S-AF-HAC-7.pdf
- Description:
- IC BATT PROT LI-ION 1CELL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,758
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Product details
Overview
AP9211S-AF-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 (0.700 V ±100 mV) protection for 1-cell lithium-ion packs, with fixed 8.0 V overvoltage charger detection and 0V battery charge permission.
For engineers reviewing the AP9211S-AF-HAC-7 datasheet, AP9211S-AF-HAC-7 pinout, AP9211S-AF-HAC-7 application, or AP9211S-AF-HAC-7 equivalent, key selection criteria include integrated MOSFET RSS(ON) (27 mΩ typ. at 4.0 V), ultra-low quiescent current (3.0 µA typ. in normal mode), programmable protection thresholds, power-down mode selectability, and thermal pad–enabled thermal management in space-constrained portable battery packs.
Technical Context
The AP9211S-AF-HAC-7 implements independent voltage-sensing paths for VDD–VSS (cell voltage) and VM–VSS (current-sense differential), with dedicated delay timers (tCU, tDL, tDOC, tSHORT) for each protection event. Its logic circuitry uses level-shifted gate drivers to control two internal N-MOSFETs sharing a common drain (EP pad), enabling bidirectional current blocking without external FETs.
Protection release behavior is conditional: overcharge release requires VDD ≤ VCL (4.175 V) while VM remains below VDOC; overdischarge release depends on battery voltage recovery to ≥VDU (2.900 V) and VM polarity-RVMD pull-up activation during deep discharge enables auto-wake-up or mandates charger reconnection per power-down mode configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375 V ±25 mV - triggers charging MOSFET shutdown when cell voltage exceeds threshold for ≥tCU (typ. 1.0 s) |
| Overdischarge Detection Voltage | 2.500 V ±35 mV - disables discharging MOSFET if cell voltage drops below threshold for ≥tDL (typ. 128 ms) |
| Discharge Overcurrent Threshold | 0.150 V ±15 mV - detects excessive load current via VM–VSS drop across internal sense path |
| Short-Circuit Detection Voltage | 0.700 V ±100 mV - initiates sub-millisecond (<1.4 µs) discharge FET turn-off for hard shorts |
| RSS(ON) (Discharge Path) | 27 mΩ typ. @ VDD = 4.0 V - limits conduction loss and self-heating during 1.0 A continuous discharge |
| Quiescent Current (Normal Mode) | 3.0 µA typ. @ VDD = 3.5 V - enables multi-year shelf life in battery-powered IoT devices |
| Package | U-DFN2030-6 (Type C) with exposed thermal pad (EP) - supports PCB copper pour for ≤45°C/W junction-to-board thermal resistance |
Pinout & Package
U-DFN2030-6 (Type C) package with 0.5 mm pitch, 2.0 mm × 3.0 mm footprint, and exposed thermal pad (EP) connected to common drain of internal MOSFETs. Requires solder mask defined pads and thermal via array under EP for reliable power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S1) | Source of discharge MOSFET | Connects directly to battery negative terminal; carries full discharge current |
| 2 (VSS) | Negative supply reference | Ground return for all internal circuits and voltage comparators |
| 3 (VDD) | Positive supply input | Connected to battery positive via current-limiting resistor (R1 = 330–470 Ω); powers protection logic |
| 4 (NC) | No connect | Must remain floating; no internal connection or function |
| 5 (VM) | Current-sense and charger monitor input | Differential input referenced to VSS; senses voltage drop across R2 to detect charge/discharge current and charger presence |
| 6 (S2) | Source of charge MOSFET | Connects to charger negative input; blocks reverse current during charge termination |
| EP | Common drain / thermal pad | Internally tied to drains of both MOSFETs; must be soldered to large copper area for thermal relief and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual N-MOSFET protection | Eliminates need for external discrete FETs and gate drivers, reducing BOM count and PCB area by >30% vs. discrete solutions |
| Programmable protection thresholds | Factory-configured VCU/VCL/VDL/VDU/VDOC/VSHORT/VCOC values enable precise matching to specific Li+ cell chemistry and pack design |
| 0V battery charge permission | Allows safe recharge of deeply depleted cells (down to 0 V) without requiring external wake-up circuitry |
| Auto-wake-up or power-down mode selectability | Configurable via part number suffix (A = Auto-wake-up, blank = Power-down); determines recovery path from overdischarge state |
| Overvoltage charger detection | Monitors VDD–VM differential (8.0 V ±2 V trip) to disable charging MOSFET during unsafe AC adapter faults or mismatched chargers |
Applications
| Power Tool Battery Packs | Wireless Headphone Charging Cases |
|---|---|
|
Use Scenario: 18 V nominal 5S Li-ion pack in cordless drill subjected to high-current bursts (>10 A) and mechanical shock-induced shorts. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage, discharge current, and short-circuit events; executes <1.4 µs short-circuit shutdown to prevent thermal runaway. Use Value: Integrated 27 mΩ RSS(ON) minimizes voltage sag during peak torque, while fixed tSHORT ensures immediate FET turn-off before connector arcing damages contacts. |
Use Scenario: Compact 3.7 V Li-ion battery in Bluetooth earbud case requiring multi-year shelf life and safe 0V recovery after long-term storage. IC Role / Device Role / Timing Role: Standby-mode protection IC maintaining 3.0 µA quiescent draw; activates 0V charge function upon USB insertion to revive dead cells. Use Value: Eliminates need for external wake-up circuitry or manual reset, enabling fully automatic "plug-and-play" recharge of stored devices. |
| Medical Wearable Monitors | Smart Home Sensor Nodes |
|
Use Scenario: ISO 13485-compliant glucose meter using single-cell Li-ion with strict safety certification requirements for overvoltage and thermal fault response. IC Role / Device Role / Timing Role: Certified battery protection element performing redundant overcharge detection (VCU + VOVCHG) and reporting status via VM pin voltage levels to host MCU. Use Value: Dual-voltage fault detection (cell-level and charger-level) satisfies IEC 62368-1 Annex G requirements for secondary cell protection architecture independence. |
Use Scenario: Zigbee-enabled temperature/humidity sensor powered by coin-cell–sized 1-cell Li-ion, deployed in unattended locations for >2 years. IC Role / Device Role / Timing Role: Low-power protection supervisor enforcing overdischarge cutoff at 2.500 V and enabling auto-wake-up on battery voltage recovery to 2.900 V. Use Value: Prevents irreversible capacity loss from deep discharge while allowing autonomous recovery without physical intervention or charger access. |
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-8261AAB-M6T1U | Separate protection IC + external MOSFETs; no integrated FETs; 2.0 µA quiescent current; ±30 mV VCU accuracy | Requires additional board space and layout complexity for dual external FETs and gate resistors | Select when higher thermal margin is needed beyond U-DFN2030-6's 1000 mW PD limit or when discrete FET replacement is preferred |
| Ricoh RP502K001B-TR-F | Integrated dual N-MOSFET; 2.5 µA quiescent current; fixed 4.25 V VCU; no 0V charge function; no overvoltage charger detection | Lacks VOVCHG monitoring and 0V recovery, limiting use in consumer electronics with variable chargers or long-storage requirements | Select for cost-sensitive, non-rechargeable-from-0V applications where charger compatibility is guaranteed and thermal load is low |
Compared with S-8261AAB-M6T1U and RP502K001B-TR-F, the AP9211S-AF-HAC-7 uniquely combines integrated FETs, 0V charge permission, overvoltage charger detection, and configurable power-down/auto-wake modes-making it optimal for compact, field-deployed, and user-rechargeable Li+ systems requiring comprehensive fault coverage in minimal footprint.
Availability
AP9211S-AF-HAC-7 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headphone charging cases, medical wearable monitors, and smart home sensor nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AP9211S-AF-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP9211 belongs to Diodes' battery protection IC product line, engineered specifically for space-constrained, high-safety 1-cell Li+ applications-emphasizing integration, precision voltage sensing, ultra-low standby power, and robust fault response.
FAQ
What is the maximum continuous discharge current supported by the AP9211S-AF-HAC-7?
The AP9211S-AF-HAC-7 supports 9.0 A continuous drain current at +25°C with VGS = 4.5 V, limited by its internal MOSFET RSS(ON) (27 mΩ typ.) and 1000 mW power dissipation rating. At +70°C, derated to 7.1 A. Thermal performance depends on PCB copper area under the EP pad and ambient airflow.
Does the AP9211S-AF-HAC-7 require external passive components for basic operation?
Yes: a 330–470 Ω resistor (R1) between VDD and battery+, a 100 nF capacitor (C1) from VDD to VSS, and a 2.7 kΩ resistor (R2) between P− and VM are required per the typical application circuit. R1 and R2 also serve as reverse-polarity current limiters and must be sized per actual voltage and fault conditions.
How does the 0V battery charge function operate, and is it enabled by default?
The 0V battery charge function is factory-configured and enabled in the AP9211S-AF-HAC-7 ('AF' suffix denotes permission). When battery voltage is 0 V, the IC allows charging current to flow once VDD rises above 1.2 V (V0CHA), bypassing standard overdischarge lockout-critical for reviving deeply self-discharged cells without external intervention.
Can the AP9211S-AF-HAC-7 be used in automotive applications?
The AP9211S-AF-HAC-7 is not AEC-Q200 qualified and is not recommended for automotive under-hood or safety-critical systems. Diodes offers AEC-Q100–qualified alternatives (e.g., AP9221 series) for automotive battery management; this device targets industrial, medical, and consumer portable electronics with operating ambient range of −40°C to +85°C.
AP9211S-AF-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-AF-HAC-7 FAQ
1.How can I place an order for AP9211S-AF-HAC-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9211S-AF-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-AF-HAC-7 reliable?
The price and inventory of AP9211S-AF-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-AF-HAC-7 is usually 5 days.
3.What payment methods are accepted for AP9211S-AF-HAC-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9211S-AF-HAC-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9211S-AF-HAC-7?
AP9211S-AF-HAC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9211S-AF-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-AF-HAC-7?
For technical support, including AP9211S-AF-HAC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9211S-AF-HAC-7 requirements.
6.How does Aetrix verify that AP9211S-AF-HAC-7 is sourced from the original manufacturer or authorized distributors?
All AP9211S-AF-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-AF-HAC-7 meets industry standards.
7.What is the process for return or replacement of AP9211S-AF-HAC-7?
All AP9211S-AF-HAC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP9211S-AF-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-AF-HAC-7 part is unused and in its original packaging.
Return procedure for AP9211S-AF-HAC-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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