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Diodes Incorporated AP9101CK-AUTRG1
- Part No.:
- AP9101CK-AUTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CK-AUTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,949
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Product details
Overview
AP9101CK-AUTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.300V ±25mV, overdischarge detection at 2.500V ±35mV, discharge overcurrent detection at 0.100V ±15mV, fixed 8.0V overvoltage charger detection, and selectable power-down mode. It controls external N-channel MOSFETs via DO and CO pins to safeguard against voltage, current, and short-circuit faults in portable power systems.
For engineers reviewing the AP9101CK-AUTRG1 datasheet, AP9101CK-AUTRG1 pinout, AP9101CK-AUTRG1 application, or AP9101CK-AUTRG1 equivalent, this device supports precise, low-power battery management in space-constrained Li+ packs where high-accuracy voltage thresholds, built-in delay timing, and 0V charge capability are required.
Technical Context
The AP9101CK-AUTRG1 integrates independent voltage comparators for VDD–VSS (cell voltage) and VM–VSS (current-sense differential), with dedicated delay timers for each protection event-overcharge (tCU), overdischarge (tDL), discharge overcurrent (tDOC), short circuit (tSHORT), and charge overcurrent (tCOC). All delays are factory-fixed with ±20% accuracy at +25°C.
Its logic circuit uses internal level-shifting to drive CO and DO outputs directly to external MOSFET gates without external drivers; CO controls the charge FET, DO controls the discharge FET, and VM serves as bidirectional current-sense input with internal pull-up/pull-down resistors (RVMD/RVMS) activated conditionally during fault states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.300V ±25mV - triggers CO pin low after tCU delay to disable charge path when cell voltage exceeds threshold |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers DO pin low after tDL delay to disable discharge path when cell voltage drops below threshold |
| Discharge Overcurrent Threshold | 0.100V ±15mV - detects excessive load current via VM–VSS voltage drop, initiating tDOC-delayed DO shutdown |
| Short-Circuit Detection Voltage | 0.700V ±100mV - enables ultrafast (sub-microsecond) DO shutdown for hard shorts across battery terminals |
| Operating Current (Typ) | 3.0µA at VDD = 3.5V - enables multi-year runtime in always-on battery pack monitoring without draining cell |
| Power-Down Current (Typ) | 0.01µA - reduces leakage during storage or deep sleep, activated by factory option and external wake-up conditions |
| VM–VDD Input Rating | 30V - supports high-voltage charger interface monitoring without external clamping components |
Pinout & Package
AP9101CK-AUTRG1 is packaged in SOT25 (5-pin) with gull-wing leads, optimized for compact 1-cell battery pack PCB layouts. Pin 1 is marked with a dot; the package is RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current-sense input / charger monitor | Bidirectional analog input sensing voltage drop across sense resistor (R2); used for discharge/charge overcurrent, short-circuit, and overvoltage charger detection |
| VDD | Positive supply input | Connects to battery positive terminal; powers internal circuitry and provides reference for all voltage comparators |
| VSS | Negative supply ground | System ground reference for all analog measurements and digital logic; tied to battery negative terminal |
| DO | Discharge control output | Drives gate of external N-MOSFET in discharge path; high = on, low = off; includes internal RDOH/RDOL for controlled turn-on/turn-off |
| CO | Charge control output | Drives gate of external N-MOSFET in charge path; high = on, low = off; includes internal RCOH/RCOL for robust gate driving |
Key Features
| Feature | Design Value |
|---|---|
| Fixed-time protection delay circuitry | Eliminates need for external timing capacitors-reduces BOM count and layout area while ensuring consistent response timing across temperature |
| Selectable 0V battery charge function | Enables safe reactivation of deeply discharged cells (0V) using standard chargers, preventing permanent pack discard due to self-discharge |
| Overvoltage charger detection (8.0V) | Monitors VDD–VM to detect faulty or mismatched chargers, disabling charge path instantly without delay to prevent cell damage |
| High-accuracy voltage detection | ±25mV overcharge and ±35mV overdischarge thresholds ensure tight state-of-charge window control without false trips or delayed protection |
| Auto-release overcharge mode | Automatically restores charge path when cell voltage falls below 4.100V (VCL), enabling seamless recovery without manual reset or power cycle |
Applications
| Smart Wearables | Medical Portable Devices |
|---|---|
Use Scenario: Rechargeable wrist-worn health monitors with slim 1-cell Li+ batteries requiring long shelf life and reliable overdischarge prevention during infrequent use. IC Role / Device Role / Timing Role: Battery protection controller enforcing 2.500V cutoff and 0.100V discharge overcurrent limit; uses tDL delay to avoid transient dropout false triggers. Use Value: Prevents irreversible capacity loss from deep discharge while enabling automatic 0V recovery-extending usable battery cycles by >200% versus non-0V-capable ICs. | Use Scenario: Handheld diagnostic tools powered by sealed 1-cell Li+ packs that must comply with IEC 62368-1 safety requirements for medical-grade energy sources. IC Role / Device Role / Timing Role: Primary safety supervisor detecting overvoltage (8.0V), short-circuit (0.700V), and charge overcurrent (−0.100V) with sub-µs response for fault containment. Use Value: Meets critical fault-clearing timing requirements for Class II medical devices, eliminating need for redundant hardware protection layers. |
| Bluetooth Headsets | IoT Sensor Nodes |
Use Scenario: Compact true-wireless stereo earbuds with integrated battery management where PCB area is constrained and quiescent current directly impacts standby time. IC Role / Device Role / Timing Role: Ultra-low-power protector consuming only 3.0µA in operation and 0.01µA in power-down mode; manages dual-MOSFET switch configuration via DO/CO outputs. Use Value: Extends shelf-life and standby duration beyond 12 months without maintenance-critical for consumer electronics with long distribution chains. | Use Scenario: Remote environmental sensors deployed in unattended locations, powered by primary Li+ cells with no charging infrastructure, requiring fail-safe overdischarge lockout. IC Role / Device Role / Timing Role: Overdischarge guardian with 2.500V detection and auto-wake-up capability; maintains functional readiness even after prolonged storage at 0V. Use Value: Enables field-deployed units to resume operation autonomously upon first connection to solar or energy-harvesting charger-eliminating manual intervention. |
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 4.250V overcharge threshold; no overvoltage charger detection; 0.1µA power-down current | Lacks 8.0V charger monitoring and 0V charge function; suited for cost-sensitive, non-automotive consumer packs | Select if charger compatibility verification is handled externally and 0V recovery is unnecessary |
| Ricoh RP502K001B-TR-F | 4.280V overcharge, 2.500V overdischarge; includes thermal shutdown; 0.05µA power-down current | Requires external thermistor for temperature-based protection; no built-in overvoltage charger detection | Choose when thermal fault coverage is mandatory and charger voltage supervision is managed at system level |
Compared with S-8261AAL-M6T1U and RP502K001B-TR-F, AP9101CK-AUTRG1 uniquely combines 8.0V overvoltage charger detection, factory-configurable 0V charge, and ±25mV overcharge accuracy-making it optimal for automotive-qualified or high-reliability portable Li+ systems where charger fault immunity and deep-discharge recovery are design-critical.
Availability
AP9101CK-AUTRG1 is available at Aetrix Electronics and suitable for smart wearables, medical portable devices, Bluetooth headsets, and IoT sensor nodes requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for AP9101CK-AUTRG1 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, with manufacturing certified to IATF 16949 and products qualified per AEC-Q100/101 standards.
The AP9101C series belongs to Diodes' battery protection IC product line, engineered specifically for high-accuracy, low-quiescent-current monitoring of single-cell Li+ and Li-polymer battery packs in automotive, industrial, and portable applications.
FAQ
What is the function of the VM pin on AP9101CK-AUTRG1?
The VM pin serves as a bidirectional current-sense input that measures voltage drop across an external sense resistor (R2) to detect discharge overcurrent, charge overcurrent, and short-circuit conditions. It also monitors VDD–VM for overvoltage charger detection. Internal resistors RVMD and RVMS connect conditionally during fault states to stabilize VM voltage and enable accurate release detection.
Does AP9101CK-AUTRG1 support automatic recovery from overdischarge?
Yes-AP9101CK-AUTRG1 supports auto-wake-up from overdischarge status. When the battery voltage rises above the overdischarge release voltage (2.900V), the device automatically exits overdischarge mode and re-enables the DO output without requiring external intervention or charger connection, provided the power-down mode is disabled.
How does the 0V battery charge function operate in AP9101CK-AUTRG1?
The 0V battery charge function is factory-enabled in AP9101CK-AUTRG1. When the battery voltage is 0V, the IC permits the charger to initiate charging once the charger voltage exceeds 1.2V at the VDD pin. This allows recovery of deeply self-discharged cells without manual reset or external circuitry, extending usable battery life in intermittently used devices.
What is the maximum allowable voltage between VDD and VM pins?
The absolute maximum voltage between VDD and VM pins is 30V, as specified in the Absolute Maximum Ratings table. This rating enables direct monitoring of high-voltage chargers (e.g., 12V wall adapters) without external voltage dividers or clamping diodes, simplifying system-level protection architecture.
AP9101CK-AUTRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
AP9101CK-AUTRG1 FAQ
1.How can I place an order for AP9101CK-AUTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CK-AUTRG1 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 AP9101CK-AUTRG1 reliable?
The price and inventory of AP9101CK-AUTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CK-AUTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CK-AUTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CK-AUTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CK-AUTRG1?
AP9101CK-AUTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CK-AUTRG1 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 AP9101CK-AUTRG1?
For technical support, including AP9101CK-AUTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CK-AUTRG1 requirements.
6.How does Aetrix verify that AP9101CK-AUTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CK-AUTRG1 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 AP9101CK-AUTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CK-AUTRG1?
All AP9101CK-AUTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CK-AUTRG1, 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 AP9101CK-AUTRG1 part is unused and in its original packaging.
Return procedure for AP9101CK-AUTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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