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Diodes Incorporated AP9214LA-AI-HSB-7
- Part No.:
- AP9214LA-AI-HSB-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP9214LA-AI-HSB-7.pdf
- Description:
- IC BATT PROT LI-ION 1CELL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,018
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Product details
Overview
AP9214LA-AI-HSB-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (RSS(ON) ≤16 mΩ), 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-ion packs for portable power tools, Bluetooth headsets, and medical wearables.
For engineers reviewing the AP9214LA-AI-HSB-7 datasheet, AP9214LA-AI-HSB-7 pinout, AP9214LA-AI-HSB-7 application, or AP9214LA-AI-HSB-7 equivalent, key selection criteria include selectable power-down mode, 0V battery charge enable, auto-release vs latch overcharge behavior, and U-DFN2535-6 (Type B, Option 1) thermal pad layout requirements.
Technical Context
The AP9214LA-AI-HSB-7 implements dual independent protection paths: one for charging (controlled via S2/VM) and one for discharging (controlled via S1/VM), each with dedicated voltage and current thresholds. Its internal logic uses fixed delay timers (±20% accuracy at +25°C) and level-shifted gate drivers to control the common-drain MOSFET pair without external components.
It features factory-configurable options: Power-Down Mode disabled (Auto-Wake-Up), Overcharge Protection Mode set to Auto Release, and 0V Battery Charge enabled. The VM pin serves as bidirectional current-sense input with internal pull-up (RVMD ≈300 kΩ) and pull-down (RVMS ≈30 kΩ) resistors for state-dependent biasing during fault recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Operating Range | 1.5 V to 5.5 V - supports full Li+ cell voltage range (2.5–4.35 V) with margin for transient spikes. |
| Overcharge Detection Voltage | 4.250 V ±25 mV - precise cutoff at standard Li+ termination voltage, preventing cell degradation. |
| Discharge Overcurrent Threshold | 0.100 V ±15 mV - enables accurate current limiting using low-value sense resistor (e.g., 10 mΩ yields 10 A trip point). |
| Quiescent Current (Normal) | 3.0 µA typ @ +25°C - extends shelf life of dormant battery packs without compromising responsiveness. |
| MOSFET RSS(ON) | 13 mΩ max @ VDD = 4.0 V - minimizes conduction loss and self-heating during 8 A continuous discharge (per Absolute Max rating). |
| Short-Circuit Response Time | 1.0 µs typ - detects hard shorts before wire fusing or cell venting occurs. |
| Operating Temperature | −40°C to +85°C - qualified for consumer and industrial portable equipment environments. |
Pinout & Package
AP9214LA-AI-HSB-7 is housed in a thermally enhanced U-DFN2535-6 (Type B, Option 1) package with exposed drain thermal pad (EP). The 2.5 mm × 3.5 mm footprint supports high-density PCB layouts while enabling efficient heat dissipation through the EP pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S1) | Discharge MOSFET Source | Connects directly to battery negative terminal; carries full load current during discharge. |
| 2 (VSS) | Negative Supply Reference | Ground reference for all internal comparators and logic; must be low-impedance return path. |
| 3 (VDD) | Positive Supply Input | Connected to battery positive via R1 (330–470 Ω); powers internal circuitry and gate drivers. |
| 4 (NC) | No Connect | Pin left floating; no internal connection - must not be soldered or tied to any net. |
| 5 (S2) | Charge MOSFET Source | Connects to charger negative input; isolates charger during overvoltage or overcurrent faults. |
| 6 (VM) | Current-Sense & Charger Monitor | Bidirectional sense node: measures discharge current (S1→VM), charge current (S2→VM), and charger voltage (VDD–VM). |
| EP | Common Drain Thermal Pad | Internally tied to both MOSFET drains; requires large copper pour for thermal management and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Dual N-Channel MOSFETs | Eliminates discrete FETs and gate drivers, reducing BOM count by ≥4 components and PCB area by >30%. |
| Selectable 0V Battery Charge | Enables safe recharge of deeply discharged cells (0 V) without requiring external wake-up circuitry. |
| Auto-Wake-Up Mode | Recovers from overdischarge without charger present-battery voltage rising above VDU (>2.5 V) triggers automatic reset after tDLR delay. |
| Fixed Delay Timers | On-chip timing eliminates external RC networks for overcharge (tCU), overdischarge (tDL), and short-circuit (tSHORT) detection. |
| Overvoltage Charger Detection | Monitors VDD–VM up to 10.5 V (±2 V accuracy) to disable charging if adapter exceeds safe limits-no external Zener required. |
Applications
| Power Tools | Wireless Headsets |
|---|---|
|
Use Scenario: Cordless drill operating at 15–20 A peak discharge with intermittent high-temp operation. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage, discharge current, and short-circuit events in real time. Use Value: 13 mΩ RSS(ON) limits I²R heating at 20 A to <5.2 W, while 1 µs short detection prevents MOSFET avalanche failure. |
Use Scenario: Compact Bluetooth earbuds requiring ultra-low standby current and reliable 0V recovery after long storage. IC Role / Device Role / Timing Role: Single-chip protector managing charge/discharge paths and enabling safe recharge from 0 V without external circuitry. Use Value: 0.1 µA power-down current extends shelf life beyond 2 years; auto-wake-up eliminates manual reset requirement. |
| Medical Wearables | Smart Pens |
|
Use Scenario: FDA-classified glucose monitor with sealed Li+ cell and strict safety certification requirements. IC Role / Device Role / Timing Role: Safety-critical protector enforcing ±25 mV overcharge voltage tolerance and latch-free auto-release behavior. Use Value: Factory-set auto-release mode avoids permanent lockout during transient overvoltage, supporting clinical usability. |
Use Scenario: Rechargeable stylus pen with micro USB charging and space-constrained 30 mm × 12 mm battery cavity. IC Role / Device Role / Timing Role: Space-optimized protection solution replacing discrete IC + dual MOSFET layout in 2.5 mm × 3.5 mm footprint. Use Value: U-DFN2535-6 package reduces total protection solution area by 65% versus SOT-23 + SO-8 discrete implementation. |
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 | Fixed 4.25 V overcharge threshold; no 0V charge option; 5.5 µA typical quiescent current. | Lacks auto-wake-up and programmable overcharge hysteresis; suitable only for cost-sensitive non-recovery designs. | Select when lowest BOM cost is prioritized over field recovery capability and precision hysteresis tuning. |
| Ricoh RP502K001B-TR-F | Separate charge/discharge FET control; 2.5 µA quiescent current; no overvoltage charger detection. | Requires external overvoltage protection; supports higher discharge current (12 A) but lacks short-circuit sub-microsecond response. | Choose for high-current applications where charger overvoltage risk is mitigated externally and faster short detection is unnecessary. |
Compared with S-8261AAL-M6T1U and RP502K001B-TR-F, the AP9214LA-AI-HSB-7 uniquely integrates overvoltage charger monitoring, 0V charge enable, and 1 µs short-circuit response in a single U-DFN package-making it optimal for compact, field-serviceable, and safety-certifiable designs.
Availability
AP9214LA-AI-HSB-7 is available at Aetrix Electronics and suitable for portable power tools, wireless audio devices, medical wearables, and smart pens requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for AP9214LA-AI-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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and protection applications.
The AP9214L series targets high-reliability 1-cell Li+ battery packs in consumer and industrial portable electronics, emphasizing integration, precision protection, and thermal efficiency in miniature packages.
FAQ
What is the function of the NC pin (Pin 4) on AP9214LA-AI-HSB-7?
Pin 4 is designated NC (No Connect) and has no internal connection. It must remain unconnected and floating-soldering it to ground, VDD, or any other net may cause malfunction or damage. This pin exists solely for mechanical symmetry in the U-DFN2535-6 (Type B, Option 1) package layout.
How does the AP9214LA-AI-HSB-7 handle 0V battery charging?
The AP9214LA-AI-HSB-7 includes factory-enabled 0V battery charge functionality. When the cell voltage is 0 V, the IC permits charging current to flow once the charger applies voltage, provided V0CHA ≥1.2 V is met. This avoids permanent lockout due to deep self-discharge and eliminates need for external wake-up circuitry.
Can AP9214LA-AI-HSB-7 be used with lithium iron phosphate (LiFePO₄) cells?
No. The AP9214LA-AI-HSB-7 is calibrated for Li+ chemistry with overcharge detection range of 3.5–4.5 V and overdischarge range of 2.0–3.4 V. LiFePO₄ cells have lower nominal voltage (3.2 V) and different protection thresholds (e.g., 3.65 V max charge), making this device incompatible without external voltage scaling-unsupported per datasheet.
What thermal design guidance applies to the EP pad?
The EP pad is electrically connected to both MOSFET drains and must be soldered to a minimum 25 mm² copper area on the PCB's inner or bottom layer. Use ≥4 thermal vias (0.3 mm diameter) under the pad, filled or capped, connecting to solid ground or power planes to maintain junction temperature below +150°C at 7.1 A continuous current.
AP9214LA-AI-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
AP9214LA-AI-HSB-7 FAQ
1.How can I place an order for AP9214LA-AI-HSB-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9214LA-AI-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 AP9214LA-AI-HSB-7 reliable?
The price and inventory of AP9214LA-AI-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 AP9214LA-AI-HSB-7 is usually 5 days.
3.What payment methods are accepted for AP9214LA-AI-HSB-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9214LA-AI-HSB-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9214LA-AI-HSB-7?
AP9214LA-AI-HSB-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9214LA-AI-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 AP9214LA-AI-HSB-7?
For technical support, including AP9214LA-AI-HSB-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9214LA-AI-HSB-7 requirements.
6.How does Aetrix verify that AP9214LA-AI-HSB-7 is sourced from the original manufacturer or authorized distributors?
All AP9214LA-AI-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 AP9214LA-AI-HSB-7 meets industry standards.
7.What is the process for return or replacement of AP9214LA-AI-HSB-7?
All AP9214LA-AI-HSB-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP9214LA-AI-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 AP9214LA-AI-HSB-7 part is unused and in its original packaging.
Return procedure for AP9214LA-AI-HSB-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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