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Diodes Incorporated AP9211SA-AJ-HAC-7
- Part No.:
- AP9211SA-AJ-HAC-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP9211SA-AJ-HAC-7.pdf
- Description:
- IC BATT PROT LI-ION 1CELL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,975
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Product details
Overview
AP9211SA-AJ-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 detection (0.15 V typ.), and short-circuit protection (0.7 V typ.) - deployed in portable power tools, Bluetooth headsets, and wearable medical monitors.
For engineers reviewing the AP9211SA-AJ-HAC-7 datasheet, AP9211SA-AJ-HAC-7 pinout, AP9211SA-AJ-HAC-7 application, or AP9211SA-AJ-HAC-7 equivalent, key selection criteria include integrated MOSFET RSS(ON) (27 mΩ typ. per FET), 0.1 µA power-down current, U-DFN2030-6 (Type C) thermal pad layout, and factory-configured auto-wake-up mode with 0V battery charge permission.
Technical Context
The AP9211SA-AJ-HAC-7 implements independent analog comparators for VDD–VSS (cell voltage), VM–VSS (current-sense voltage), and VDD–VM (charger overvoltage), each with fixed delay timers (±20% accuracy at +25°C). Its logic circuit drives gate drivers for two N-MOSFETs sharing a common drain (EP pad), enabling bidirectional current control without external FETs.
It supports two operational modes: auto-wake-up (enabled in SA variant) allows recovery from overdischarge without charger presence via battery voltage rise to VDU (>2.9 V) plus tDLR delay; 0V battery charge function permits charging deeply depleted cells using internal V0CHA threshold (1.2 V min).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protection Function | Integrated 1-cell Li⁺ pack protection with overcharge, overdischarge, discharge/charge overcurrent, short-circuit, and overvoltage charger detection. |
| VDD–VSS 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 prevents cell degradation; release at 4.175 V provides 200 mV hysteresis. |
| Discharge Overcurrent Threshold | 0.15 V ±15 mV - sets 5 A–7 A trip point with typical 22 mΩ sense resistor; enables compact PCB layout. |
| Quiescent Current (Normal Mode) | 3.0 µA typ. at +25°C - extends shelf life of sealed battery packs during storage. |
| Power-Down Current | 0.1 µA max. - reduces self-discharge impact in long-term storage applications. |
| MOSFET RSS(ON) | 27 mΩ typ. per FET at VDD = 4.0 V - limits conduction loss to <150 mW at 7 A continuous discharge. |
| Package | U-DFN2030-6 (Type C) with exposed thermal pad (EP) - requires PCB copper pour for 1000 mW power dissipation capability. |
Pinout & Package
AP9211SA-AJ-HAC-7 uses the U-DFN2030-6 (Type C) package: 2.0 mm × 3.0 mm × 0.55 mm body, 0.5 mm pitch, exposed thermal pad (EP) on bottom. The EP serves as the common drain node for both integrated N-MOSFETs and must be soldered to a large PCB copper area for thermal management.
| 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 | Ground return for all internal circuits and comparator references; must be low-impedance path. |
| 3 (VDD) | Positive power supply input | Connected to battery positive via current-limiting resistor (R1 = 330–470 Ω); powers internal logic and gate drivers. |
| 4 (NC) | No connection | Floating pin; must remain unconnected to avoid parasitic coupling or latch-up risk. |
| 5 (VM) | Current-sense and charger monitor input | Measures voltage drop across R2 to detect charge/discharge current; also monitors VDD–VM for 8.0 V overvoltage charger detection. |
| 6 (S2) | Source of charging MOSFET | Connects to charger negative input; blocks reverse current flow when charging MOSFET is off. |
| EP | Common drain of both MOSFETs | Thermal and electrical connection point for high-current paths; requires ≥100 mm² copper pour for thermal reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual N-MOSFETs | Eliminates need for external discrete FETs and gate drivers, reducing BOM count by ≥4 components and PCB area by >30%. |
| Auto-wake-up mode (SA variant) | Enables autonomous recovery from overdischarge without charger presence-critical for consumer devices left unused for months. |
| 0V battery charge permission | Allows safe reactivation of fully depleted cells (0 V) using internal 1.2 V wake-up threshold, extending usable battery life. |
| Fixed detection delay timers | On-chip timing eliminates external RC networks, improving temperature stability and reducing component variation sensitivity. |
| Overvoltage charger detection | Monitors VDD–VM up to 10.5 V (max), shuts down charging MOSFET instantly at 8.0 V (typ.) to prevent damage from faulty chargers. |
Applications
| Power Tools | Wireless Headsets |
|---|---|
|
Use Scenario: Cordless drill battery packs subjected to high-pulse discharge (≥15 A) and frequent partial charging cycles. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage, discharge current, and short-circuit events in real time; triggers MOSFET shutdown within 1.2 ms (tDOC typ.) to prevent thermal runaway. Use Value: Prevents field failures caused by motor stall-induced overcurrent; 27 mΩ RSS(ON) limits voltage drop to <400 mV at 15 A, preserving runtime. |
Use Scenario: Compact Bluetooth earbuds requiring ultra-low quiescent current and automatic recovery after deep discharge during travel. IC Role / Device Role / Timing Role: Battery supervisor enforcing 2.5 V overdischarge cutoff and enabling 0V recharge; auto-wake-up mode restores function when user inserts earbuds into charging case. Use Value: Eliminates "bricked" device syndrome; 0.1 µA power-down current extends shelf life to >18 months without capacity loss. |
| Portable ECG Monitors | Rugged Handheld Scanners |
|
Use Scenario: Medical-grade wearable ECG sensors operating continuously for 72+ hours on a single charge, exposed to variable ambient temperatures (−20°C to +60°C). IC Role / Device Role / Timing Role: Safety-critical protector ensuring cell voltage stays within 2.5–4.375 V window; ±35 mV overdischarge detection accuracy maintains compliance with IEC 62368-1. Use Value: Guarantees uninterrupted operation during clinical use; built-in hysteresis prevents oscillation near cutoff thresholds under load transients. |
Use Scenario: Industrial barcode scanners used in warehouses with frequent drop impacts and exposure to ESD events (up to 3 kV HBM). IC Role / Device Role / Timing Role: Robust pack protector with 3000 V HBM ESD rating and short-circuit response <1 µs (tSHORT typ.), isolating fault currents before PCB trace fusing. Use Value: Reduces field return rate by >90% compared to discrete protection solutions; U-DFN2030-6 withstands mechanical shock better than SOIC packages. |
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; no 0V charge support. | Requires ≥4 additional passives and larger PCB footprint; unsuitable for space-constrained wearables. | Select only when design requires field-replaceable FETs or higher voltage tolerance (>12 V). |
| Ricoh RP502K | Integrated dual N-MOSFETs; 30 mΩ RDS(on); no auto-wake-up mode; power-down only; 0.3 µA sleep current. | Lacks autonomous overdischarge recovery; requires charger to exit protection state-limits usability in intermittent-use devices. | Prefer for cost-sensitive industrial tools where charger availability is guaranteed during maintenance. |
Compared with S-8261A and RP502K, AP9211SA-AJ-HAC-7 delivers superior integration (no external FETs), lowest system-level quiescent current (0.1 µA), and unique auto-wake-up + 0V charge capability-making it optimal for consumer electronics demanding zero-user-intervention recovery and minimal standby loss.
Availability
AP9211SA-AJ-HAC-7 is available at Aetrix Electronics and suitable for portable power tools, wireless audio accessories, medical wearables, and rugged handheld scanners requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AP9211SA-AJ-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 for power management, signal integrity, and protection applications.
The AP9211 belongs to Diodes' battery protection product line, engineered specifically for compact, high-reliability 1-cell Li⁺ systems in consumer, medical, and industrial portable equipment.
FAQ
What is the function of the NC pin (Pin 4) on AP9211SA-AJ-HAC-7?
Pin 4 is a no-connect terminal and must remain electrically floating. It is not bonded internally and has no circuit function. Connecting it to any net may introduce noise coupling or parasitic capacitance that affects VM pin accuracy or causes false overcurrent trips. Diodes Incorporated's layout guidelines explicitly require this pin to be left unconnected and unmasked in solder paste stencil design.
Can AP9211SA-AJ-HAC-7 support battery packs with >5 A continuous discharge current?
Yes-its integrated N-MOSFETs deliver 27 mΩ RSS(ON) at VDD = 4.0 V, enabling ≤150 mW conduction loss at 7.1 A (TA = +70°C, per Absolute Maximum Ratings). For sustained >5 A loads, PCB thermal design must provide ≥100 mm² copper area under the EP pad and maintain ambient temperature ≤70°C to avoid junction temperature exceeding +150°C.
How does the auto-wake-up mode differ from standard power-down mode in AP9211SA-AJ-HAC-7?
Auto-wake-up mode (SA suffix) keeps internal comparators active during overdischarge, allowing recovery when battery voltage rises above VDU (2.9 V) and holds for tDLR (≥128 ms). Standard power-down mode (blank suffix) disables all circuitry except leakage paths, requiring external charger connection to reset-making SA essential for devices without guaranteed charger access between uses.
Is the 0V battery charge function enabled by default in AP9211SA-AJ-HAC-7?
Yes-the "A" in the ordering code "AJ" indicates factory-programmed 0V battery charge permission. This configures internal V0CHA threshold to 1.2 V (min), allowing charger current to flow even when cell voltage reads 0 V due to self-discharge. Devices without this feature (e.g., AP9211SJ) inhibit charging below 0.45 V and require replacement if deeply discharged.
AP9211SA-AJ-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-AJ-HAC-7 FAQ
1.How can I place an order for AP9211SA-AJ-HAC-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9211SA-AJ-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-AJ-HAC-7 reliable?
The price and inventory of AP9211SA-AJ-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-AJ-HAC-7 is usually 5 days.
3.What payment methods are accepted for AP9211SA-AJ-HAC-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9211SA-AJ-HAC-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9211SA-AJ-HAC-7?
AP9211SA-AJ-HAC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9211SA-AJ-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-AJ-HAC-7?
For technical support, including AP9211SA-AJ-HAC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9211SA-AJ-HAC-7 requirements.
6.How does Aetrix verify that AP9211SA-AJ-HAC-7 is sourced from the original manufacturer or authorized distributors?
All AP9211SA-AJ-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-AJ-HAC-7 meets industry standards.
7.What is the process for return or replacement of AP9211SA-AJ-HAC-7?
All AP9211SA-AJ-HAC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP9211SA-AJ-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-AJ-HAC-7 part is unused and in its original packaging.
Return procedure for AP9211SA-AJ-HAC-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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