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Diodes Incorporated AP9214L-AK-HSB-7
- Part No.:
- AP9214L-AK-HSB-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP9214L-AK-HSB-7.pdf
- Description:
- IC BATT PROT LI-ION 1CELL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,820
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Product details
Overview
AP9214L-AK-HSB-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (RSS(ON) ≤16 mΩ @ VDD=4.0V), overcharge/overdischarge voltage detection (±25 mV accuracy), discharge overcurrent sensing (±15 mV), and short-circuit protection with 1 μs response. It operates in 1-cell Li+ packs for portable power tools, Bluetooth headsets, and medical wearables.
For engineers reviewing the AP9214L-AK-HSB-7 datasheet, AP9214L-AK-HSB-7 pinout, AP9214L-AK-HSB-7 application, or AP9214L-AK-HSB-7 equivalent, key selection criteria include its U-DFN2535-6 (Type B, Option 1) package, selectable power-down mode, 0V battery charge enable, and ±20% fixed delay timing accuracy across -40°C to +85°C.
Technical Context
The AP9214L-AK-HSB-7 implements independent analog comparators for VDD–VSS (battery voltage) and VM–VSS (current-sense voltage), with dedicated logic blocks for overcharge (VCU = 4.25 V typ, hysteresis 0.2 V), overdischarge (VDL = 2.50 V typ), and short-circuit (VSHORT = 0.55 V typ) conditions. Its internal level-shift circuitry drives dual MOSFET gates without external components.
It features two configurable operating modes: power-down (0.1 µA standby current) requiring charger wake-up, or auto-wake-up (5.5 µA standby) enabling recovery from overdischarge via voltage rise alone. The VM pin interfaces directly to an external sense resistor (R2 = 2.7 kΩ typical) to monitor bidirectional current flow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Operating Range | 1.5 V to 5.5 V - supports full Li+ cell voltage range including deep discharge recovery |
| Overcharge Detection Voltage | 4.25 V ±25 mV - factory-trimmed threshold ensures precise cell voltage cutoff at end-of-charge |
| Discharge Overcurrent Threshold | 0.100 V ±15 mV - enables accurate current limiting using low-value, low-power sense resistors |
| MOSFET RSS(ON) | 13 mΩ max @ VDD=4.0V - minimizes conduction loss and thermal rise during 9 A continuous discharge |
| Quiescent Current | 3.0 µA typ in normal mode - extends battery shelf life without compromising protection responsiveness |
| Short-Circuit Response Time | 1.0 µs typ - prevents catastrophic failure during direct load shorts by disabling discharge path within microsecond |
| 0V Battery Charge Enable | Factory-configured active - allows safe reactivation of deeply depleted cells without manual intervention |
Pinout & Package
AP9214L-AK-HSB-7 uses the U-DFN2535-6 (Type B, Option 1) package: 2.5 mm × 3.5 mm × 0.55 mm body with exposed thermal pad (EP) for enhanced heat dissipation. Pin 5 is NC (no connect); EP must be soldered to large PCB copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| S1 | Source of discharging MOSFET | Connects directly to battery negative terminal; carries full load current during discharge |
| VSS | Negative power supply reference | System ground return for all internal comparators and logic; must be low-impedance |
| VDD | Positive power supply input | Connected to battery positive via R1 (330–470 Ω); powers internal circuitry and gate drivers |
| VM | Current-sense input | Monitors voltage drop across external R2 to detect charge/discharge current direction and magnitude |
| NC | No connection | Pin 5 must remain unconnected and floating; no routing or soldering allowed |
| S2 | Source of charging MOSFET | Connects to charger negative input; enables bidirectional current control with separate MOSFET paths |
| EP | Common drain thermal pad | Internally tied to both MOSFET drains; requires ≥100 mm² copper pour for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Dual integrated N-MOSFETs | Common-drain configuration eliminates external FETs and reduces BOM count by two discrete devices |
| Programmable overcharge release | Hysteresis adjustable from 0.1 V to 0.4 V in 50 mV steps - prevents oscillation near trip point |
| Fixed delay timing | Internal RC-based delays (e.g., tCU = 1.0 s typ) eliminate need for external capacitors or timing resistors |
| Selectable 0V charge function | Factory-set enable allows safe recharge of fully depleted cells without external supervisor circuitry |
| Overvoltage charger detection | 8.0 V ±2 V threshold protects against faulty chargers - triggers immediate charge MOSFET shutdown |
Applications
| Power Tools | Wireless Headsets |
|---|---|
Use Scenario: Cordless drill battery pack subjected to high-pulse discharge (up to 20 A) and rapid recharging cycles. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage, discharge current, and short-circuit events in real time. Use Value: Dual MOSFETs with 13 mΩ RSS(ON) limit I²R heating during burst loads; 1 µs short-circuit response prevents MOSFET destruction. |
Use Scenario: Compact Bluetooth earbud battery exposed to frequent shallow cycling and accidental deep discharge. IC Role / Device Role / Timing Role: Single-chip protector enabling 0V battery recovery and ultra-low quiescent current for multi-week shelf life. Use Value: 0.1 µA power-down mode extends unused battery life; ±25 mV overcharge accuracy prevents cell swelling during overnight charging. |
| Portable Medical Monitors | Smart Wearables |
Use Scenario: Clinical-grade pulse oximeter requiring guaranteed runtime and fail-safe shutdown under fault conditions. IC Role / Device Role / Timing Role: Safety-critical protection element enforcing strict voltage windows and current limits per IEC 62368-1. Use Value: Overvoltage charger detection (8.0 V) blocks non-compliant USB-PD adapters; latch-mode overcharge prevents unsafe restart after fault. |
Use Scenario: Fitness tracker with tight space constraints and need for automatic recovery from user-induced deep discharge. IC Role / Device Role / Timing Role: Integrated protection solution eliminating discrete FETs and reducing footprint by >40% vs. discrete designs. Use Value: U-DFN2535-6 package fits sub-100 mm² PCB area; auto-wake-up mode restores operation when user reconnects charger without manual reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Li+ battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Seiko Instruments S-8261A | Single-MOSFET architecture; no integrated charge MOSFET; requires external P-FET for charge path | Limited to unidirectional protection; cannot support bidirectional current sensing or 0V charge | Choose only if cost sensitivity outweighs need for full protection and compactness |
| Ricoh RP506K | Higher quiescent current (6 µA typ); no overvoltage charger detection; fixed 2.8 V overdischarge threshold | Not suitable for wide-VDD applications or systems requiring charger fault immunity | Select only for legacy designs where 0V charge and charger overvoltage protection are not required |
Compared with S-8261A and RP506K, the AP9214L-AK-HSB-7 delivers true bidirectional protection in one die, enables safe 0V recovery, and adds critical charger overvoltage blocking - making it optimal for next-gen compact, safety-critical Li+ systems.
Availability
AP9214L-AK-HSB-7 is available at Aetrix Electronics and suitable for portable power tools, wireless audio accessories, clinical monitoring devices, and smart wearables requiring stable component supply and long-term lifecycle support.
Supply support for AP9214L-AK-HSB-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 integrated circuits, specializing in power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The AP9214L belongs to Diodes' battery protection IC product line, engineered specifically for space-constrained, high-reliability 1-cell Li+ applications demanding integrated MOSFETs, ultra-low IQ, and comprehensive fault coverage.
FAQ
What is the function of the NC pin on AP9214L-AK-HSB-7?
Pin 5 is designated NC (No Connect) and must remain electrically unconnected and floating in all PCB layouts. It has no internal bond wire or circuit connection. Soldering, routing, or grounding this pin may cause functional failure or damage due to unintended parasitic coupling into the sensitive VM or VSS nodes.
How does the AP9214L-AK-HSB-7 handle 0V battery charging?
The AP9214L-AK-HSB-7 includes factory-configured 0V battery charge enable functionality. When the battery voltage reaches 0 V, the IC permits charging current to flow once the charger applies sufficient voltage to raise the VDD node above 1.2 V, allowing safe reactivation without external intervention or manual reset.
Can AP9214L-AK-HSB-7 support both charge and discharge overcurrent protection simultaneously?
Yes. The AP9214L-AK-HSB-7 independently monitors VM–VSS voltage polarity: negative voltage indicates charge overcurrent (triggering S2 shutdown), while positive voltage indicates discharge overcurrent or short circuit (triggering S1 shutdown). Each condition uses dedicated comparators and delay timers.
What thermal design guidance applies to the EP pad?
The EP pad is the common drain connection for both internal MOSFETs and must be soldered to ≥100 mm² of 2-ounce copper on the PCB's bottom layer. Thermal vias (≥6×0.3 mm diameter) should connect EP to inner ground planes. Failure to implement adequate copper area risks junction temperature exceeding 150°C during 9 A continuous operation.
AP9214L-AK-HSB-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Battery Protection
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Fault Protection:
- Over Current, Over Voltage, Short Circuit
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN2535-6
AP9214L-AK-HSB-7 FAQ
1.How can I place an order for AP9214L-AK-HSB-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9214L-AK-HSB-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 AP9214L-AK-HSB-7 reliable?
The price and inventory of AP9214L-AK-HSB-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9214L-AK-HSB-7 is usually 5 days.
3.What payment methods are accepted for AP9214L-AK-HSB-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9214L-AK-HSB-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9214L-AK-HSB-7?
AP9214L-AK-HSB-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9214L-AK-HSB-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 AP9214L-AK-HSB-7?
For technical support, including AP9214L-AK-HSB-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9214L-AK-HSB-7 requirements.
6.How does Aetrix verify that AP9214L-AK-HSB-7 is sourced from the original manufacturer or authorized distributors?
All AP9214L-AK-HSB-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 AP9214L-AK-HSB-7 meets industry standards.
7.What is the process for return or replacement of AP9214L-AK-HSB-7?
All AP9214L-AK-HSB-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP9214L-AK-HSB-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 AP9214L-AK-HSB-7 part is unused and in its original packaging.
Return procedure for AP9214L-AK-HSB-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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