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Diodes Incorporated AP9101CAK-AYTRG1
- Part No.:
- AP9101CAK-AYTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-AYTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,183
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Product details
Overview
AP9101CAK-AYTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.250V ±25mV, overdischarge detection at 2.400V ±35mV, discharge overcurrent detection at 0.150V ±15mV, and built-in fixed delay timing with no external capacitor required. It controls external N-channel MOSFETs via dedicated CO and DO pins and supports 0V battery charge functionality.
For engineers reviewing the AP9101CAK-AYTRG1 datasheet, AP9101CAK-AYTRG1 pinout, AP9101CAK-AYTRG1 application, or AP9101CAK-AYTRG1 equivalent, this device is selected for precision voltage thresholds, ultra-low 3.0µA operating current, selectable power-down mode, and high-voltage tolerance (30V between VDD and VM) in compact SOT25 packaging.
Technical Context
The AP9101CAK-AYTRG1 integrates independent voltage comparators for overcharge (VCU = 4.250V), overdischarge (VDL = 2.400V), and overvoltage charger (VOVCHG = 8.0V), each with configurable hysteresis and ±25–±100mV accuracy across temperature. Its logic circuit drives CO and DO outputs to control charge/discharge FETs based on real-time VM–VSS differential sensing.
It implements fixed internal delay timers (tCU = 1.0s typ, tDL = 128ms typ, tDOC = 8ms typ, tSHORT = 12µs typ) without external RC components and includes selectable auto-wake-up behavior during overdischarge recovery-enabling operation without charger presence when VDD rises above VDU = 3.000V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.250V ±25mV - sets precise upper cell voltage limit before disabling charge path |
| Overdischarge Detection Voltage | 2.400V ±35mV - triggers discharge cutoff to prevent deep cell depletion |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via sense resistor voltage drop |
| Operating Current | 3.0µA typ at +25°C - enables multi-year battery standby life in portable devices |
| VDD–VM Absolute Max | 30V - supports robust operation under transient charger overvoltage conditions |
| 0V Battery Charge Support | Enabled - allows safe recharge of fully depleted Li+ cells without manual intervention |
| Package | SOT25 - 5-pin surface-mount package with 1.6mm × 2.9mm footprint and 1.1mm height |
Pinout & Package
SOT25 package: 5-pin, small-outline transistor outline with gull-wing leads; moisture sensitivity level (MSL) 1, RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VM | Charge current sense input | Monitors voltage drop across external sense resistor (R2) to detect charge/discharge overcurrent and short-circuit events |
| 2: VDD | Positive supply input | Connects to battery positive terminal; powers internal circuitry and provides reference for all voltage detection functions |
| 3: VSS | Negative supply ground | System ground reference for all analog comparators and digital logic; tied to battery negative |
| 4: DO | Discharge control output | Drives gate of external discharge N-MOSFET; pulled low to disable discharge path during overdischarge or overcurrent |
| 5: CO | Charge control output | Drives gate of external charge N-MOSFET; pulled low to disable charge path during overcharge, overvoltage charger, or charge overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Fixed internal delay timers | Eliminates need for external capacitors-reduces BOM count and PCB area in space-constrained battery packs |
| Selectably enabled 0V battery charge | Permits automatic recovery of deeply discharged cells without user-initiated wake-up sequence |
| Auto-wake-up overdischarge release | Enables return to normal operation when battery voltage exceeds VDU = 3.000V, even without charger connection |
| High-accuracy voltage detection | ±25mV overcharge threshold tolerance ensures tight cell voltage regulation and maximizes usable capacity |
| 30V VDD–VM rating | Withstands common automotive or industrial charger transients without latch-up or damage |
Applications
| Power Tool Battery Packs | Wireless Headphone Charging Cases |
|---|---|
|
Use Scenario: Rechargeable 1-cell Li+ pack powering cordless drills with high pulse discharge currents up to 20A. IC Role / Device Role / Timing Role: Protection IC monitoring cell voltage, VM–VSS differential, and enabling/disabling charge/discharge paths via CO/DO outputs. Use Value: Prevents thermal runaway during high-current discharge by triggering at 0.150V sense voltage (e.g., 5mΩ Rsense → 30A trip point) with 8ms response. |
Use Scenario: Compact charging case for true wireless stereo earbuds requiring long shelf life and safe zero-volt recharge. IC Role / Device Role / Timing Role: Battery protection controller managing charge termination, overdischarge lockout, and automatic wake-up from storage state. Use Value: Enables reliable 0V battery charge initiation and maintains <3.0µA quiescent current to extend case standby time beyond 12 months. |
| Medical Portable Monitors | Smart Smoke Detectors |
|
Use Scenario: Life-critical handheld vital sign monitor using single Li+ cell with strict safety and longevity requirements. IC Role / Device Role / Timing Role: Primary protection layer enforcing IEC 62133-compliant voltage and current limits during charge/discharge cycles. Use Value: Guarantees ±35mV overdischarge detection accuracy to avoid irreversible cell damage while supporting >500-cycle lifetime. |
Use Scenario: Battery-powered residential smoke alarm with 10-year sealed Li+ cell and mandatory self-test capability. IC Role / Device Role / Timing Role: Safety-critical protector ensuring cell remains within 2.400V–4.250V window during decade-long deployment. Use Value: Delivers 0.01µA power-down current and auto-wake-up on voltage rise-enabling full functional verification during periodic self-tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Seiko Instruments S-8261AAL-M6T1U | Fixed 4.25V overcharge, 2.50V overdischarge; no 0V charge support; requires external capacitor for delay timing | Lacks auto-wake-up and 0V charge-requires manual reset or charger presence to recover from deep discharge | Choose when cost sensitivity outweighs field reliability needs and design can accommodate external timing cap |
| Ricoh RP507K001B-TR-F | 4.25V/2.40V thresholds; 0.15V discharge OCP; but only 1.8µA operating current and no overvoltage charger detection | Missing VOVCHG (8.0V) protection-unsuitable for systems exposed to unregulated or automotive-grade chargers | Prefer where ultra-low ICC is critical and charger overvoltage risk is eliminated by upstream regulation |
Compared with S-8261AAL-M6T1U and RP507K001B-TR-F, AP9101CAK-AYTRG1 uniquely combines factory-configured 0V charge, overvoltage charger detection, and capacitor-free timing-making it optimal for consumer and medical battery packs demanding field robustness and maintenance-free operation.
Availability
AP9101CAK-AYTRG1 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headphone charging cases, medical portable monitors, and smart smoke detectors requiring stable component supply, long-lifecycle assurance, and RoHS/Green compliance.
Supply support for AP9101CAK-AYTRG1 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 solutions, with manufacturing certified to IATF 16949 and product qualification per AEC-Q100/101 standards.
The AP9101C series belongs to Diodes' battery protection IC product line, engineered specifically for high-accuracy, low-power, single-cell Li+ pack safety in consumer, industrial, and medical applications.
FAQ
What is the function of the VM pin on AP9101CAK-AYTRG1?
The VM pin serves as the current-sense input for both charge and discharge overcurrent detection. It measures the voltage difference between itself and VSS to determine load or charger current magnitude via an external sense resistor (R2). During overcurrent or short-circuit events, the IC uses VM–VSS voltage to trigger DO or CO shutdown with microsecond-to-millisecond response times depending on fault type.
Does AP9101CAK-AYTRG1 support automatic recovery from overdischarge without a charger?
Yes-this variant includes auto-wake-up functionality. When the battery voltage rises above the overdischarge release voltage (VDU = 3.000V), the IC exits overdischarge status and re-enables the DO output, restoring discharge capability even if no charger is connected. This behavior is factory-configured and does not require external wake-up circuitry.
How does the overvoltage charger detection feature work?
The overvoltage charger detection monitors the voltage between VDD and VM pins. If this differential exceeds 8.0V (±2V), the CO pin is immediately driven low to disable the charge MOSFET. Recovery occurs when the differential falls below 7.3V (±2V), with no intentional delay-providing instantaneous protection against faulty or unregulated chargers.
Can AP9101CAK-AYTRG1 be used with a 2-cell battery configuration?
No-it is strictly designed for 1-cell Li+ or Li-polymer batteries with nominal 3.6–3.7V and maximum 4.2–4.35V charge voltage. Its voltage detection thresholds (e.g., 4.250V overcharge, 2.400V overdischarge) and absolute maximum ratings (12V VDD–VSS) do not support series-connected cells. For 2-cell applications, Diodes' AP9211 or AP9221 families are appropriate alternatives.
AP9101CAK-AYTRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP9101CAK-AYTRG1 FAQ
1.How can I place an order for AP9101CAK-AYTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-AYTRG1 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 AP9101CAK-AYTRG1 reliable?
The price and inventory of AP9101CAK-AYTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-AYTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-AYTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-AYTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-AYTRG1?
AP9101CAK-AYTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-AYTRG1 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 AP9101CAK-AYTRG1?
For technical support, including AP9101CAK-AYTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-AYTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-AYTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-AYTRG1 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 AP9101CAK-AYTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-AYTRG1?
All AP9101CAK-AYTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-AYTRG1, 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 AP9101CAK-AYTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-AYTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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