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Diodes Incorporated AP9101CK-AHTRG1
- Part No.:
- AP9101CK-AHTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CK-AHTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,812
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Product details
Overview
AP9101CK-AHTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.425V ±25mV, overdischarge detection at 2.500V ±35mV, discharge overcurrent detection at 0.075V ±15mV, and integrated 0V battery charge functionality. It operates with 3.0µA typical current consumption in active mode and controls external N-channel MOSFETs via dedicated CO and DO gate drive pins in portable power tools and Bluetooth headsets.
For engineers reviewing the AP9101CK-AHTRG1 datasheet, AP9101CK-AHTRG1 pinout, AP9101CK-AHTRG1 application, or AP9101CK-AHTRG1 equivalent, this device delivers precision voltage thresholds, fixed delay timing without external capacitors, selectable power-down mode, and high-voltage tolerance (30V between VDD and VM) for robust 1-cell Li+ pack safety design.
Technical Context
The AP9101CK-AHTRG1 implements independent analog comparators for overcharge (VCU = 4.425V), overdischarge (VDL = 2.500V), and overcurrent (VDOC = 0.075V), each with configurable hysteresis and ±20% delay time accuracy. Its logic circuit drives CO and DO outputs to control external charge/discharge FETs based on real-time VM–VSS and VDD–VSS voltage monitoring.
It integrates internal pull-up (RVMD) and pull-down (RVMS) resistors for VM pin biasing during fault states, supports 0V battery charging via factory-set option, and includes overvoltage charger detection (8.0V fixed) with immediate CO shutdown-no delay circuit required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.425V ±25mV - sets precise upper cell voltage limit before CO disables charge path |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers DO shutdown to prevent deep discharge damage to Li+ cell |
| Discharge Overcurrent Threshold | 0.075V ±15mV - detects excessive load current via sense resistor voltage drop at VM pin |
| Active Current Consumption | 3.0µA typ at VDD = 3.5V - enables multi-year runtime in always-on battery monitoring |
| VM–VDD Absolute Max Voltage | 30V - supports high-side charger monitoring without level-shifting components |
| 0V Battery Charge Function | Enabled - allows safe recharge of fully depleted cells without manual pre-charge circuitry |
| Package Type | SOT25 - 5-pin surface-mount package with 1.6mm × 2.9mm footprint for compact battery PCB layout |
Pinout & Package
SOT25 package: 5-pin, small-outline transistor outline with gull-wing leads; pin 1 marked; RoHS-compliant, halogen-free, lead-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current Sense Input | Monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short-circuit conditions |
| VDD | Positive Supply Input | Connects to battery positive terminal; powers internal circuitry and provides reference for all voltage detection functions |
| VSS | Negative Supply Input | Ground reference for all internal comparators and logic; tied to battery negative terminal |
| DO | Discharge Control Output | Drives gate of external N-MOSFET to disconnect load when overdischarge or discharge overcurrent occurs |
| CO | Charge Control Output | Drives gate of external N-MOSFET to disconnect charger when overcharge, charge overcurrent, or overvoltage charger condition occurs |
Key Features
| Feature | Design Value |
|---|---|
| Fixed Delay Timing Circuit | Eliminates need for external timing capacitors-reduces BOM count and board space in battery management modules |
| Selectable Power-Down Mode | Reduces quiescent current to 0.1µA typ, extending shelf life of sealed battery packs awaiting deployment |
| High-Accuracy Voltage Detection | ±25mV overcharge threshold tolerance ensures consistent cell voltage clamping across temperature and unit variance |
| Integrated 0V Battery Charge | Enables automatic recovery of deeply discharged cells without external wake-up circuitry or manual intervention |
| Overvoltage Charger Protection | 8.0V fixed detection with no delay prevents damage from faulty or mismatched chargers in consumer electronics |
Applications
| Power Tool Battery Packs | Wireless Headset Batteries |
|---|---|
|
Use Scenario: Cordless drill battery pack subjected to high-current pulses and thermal cycling during operation. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage, discharge current, and charger input to prevent overcharge, overdischarge, and short-circuit faults. Use Value: Prevents thermal runaway during aggressive discharge by triggering DO shutdown within 10ms of exceeding 0.075V VM–VSS differential. |
Use Scenario: Compact Bluetooth headset requiring ultra-low standby current and reliable 0V recovery after long-term storage. IC Role / Device Role / Timing Role: Standalone protection IC managing charge/discharge paths and enabling safe recharge of fully depleted cells. Use Value: Enables full functional recovery from 0V state using standard USB charger, eliminating need for special pre-charge hardware. |
| Medical Portable Monitors | Smart Wearable Sensors |
|
Use Scenario: Battery-powered ECG monitor used in clinical and home settings with strict safety certification requirements. IC Role / Device Role / Timing Role: Safety-critical protection element ensuring cell voltage remains within IEC 62133 limits under all operating and fault conditions. Use Value: Meets medical-grade reliability with ±35mV overdischarge detection accuracy and built-in hysteresis to prevent oscillation near trip points. |
Use Scenario: Fitness tracker with tight PCB area budget and requirement for multi-year battery life without maintenance. IC Role / Device Role / Timing Role: Low-power protection supervisor maintaining <3µA active current and <0.1µA sleep current while continuously monitoring cell health. Use Value: Extends usable battery life by >15% versus higher-quiescent alternatives, directly increasing device operational window between charges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar lithium-ion battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP9101CK-AETRG1 | Higher discharge overcurrent threshold (0.300V vs. 0.075V); lower overcharge voltage (4.200V) | Better suited for low-sensitivity applications with larger sense resistors or less aggressive current limiting | Select when system-level current sensing uses ≥10mΩ shunts and requires reduced false-trip risk under transient loads |
| AP9101CK-AGTRG1 | Same overcharge/overdischarge voltages but lower discharge overcurrent threshold (0.075V) and charge overcurrent threshold (-0.075V) | Identical protection sensitivity profile; differs only in factory-set power-down enable/disable configuration | Choose if auto-wake-up behavior is required instead of power-down mode-both share identical voltage and timing specs |
Compared with AP9101CK-AETRG1, the AHTRG1 offers tighter overcurrent protection for high-precision applications, while AGTRG1 matches its electrical thresholds exactly but enables different wake-up behavior-making AHTRG1 optimal for designs prioritizing lowest possible fault current detection without compromising voltage accuracy.
Availability
AP9101CK-AHTRG1 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headset batteries, and medical portable monitors requiring stable component supply, long-lifecycle support, and guaranteed RoHS/Green compliance.
Supply support for AP9101CK-AHTRG1 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 devices for power management, signal integrity, and protection applications.
The AP9101C series belongs to Diodes' battery protection IC product line, engineered specifically for cost-sensitive, space-constrained 1-cell Li+ applications where precision voltage monitoring and minimal external components are critical.
FAQ
What is the function of the VM pin on the AP9101CK-AHTRG1?
The VM pin serves as the current-sense input that measures the voltage drop across an external sense resistor placed between the battery's P− terminal and the load/charger path. It enables detection of discharge overcurrent, charge overcurrent, and short-circuit events by comparing this voltage against internal thresholds (e.g., 0.075V for discharge overcurrent). During fault states, internal resistors (RVMD/RVMS) connect to bias VM for stable fault latching and release behavior.
Does the AP9101CK-AHTRG1 support automatic recovery from overdischarge?
Yes-the AP9101CK-AHTRG1 supports automatic recovery from overdischarge when the battery voltage rises above the overdischarge release voltage (VDU = 2.900V) and the VM pin voltage falls below −0.7V relative to VSS, indicating load removal. This dual-condition release prevents premature reconnection under partial-load conditions and ensures full cell recovery before resuming discharge.
Can the AP9101CK-AHTRG1 be used with 2-cell battery configurations?
No-the AP9101CK-AHTRG1 is designed exclusively for single-cell lithium-ion or lithium-polymer batteries with nominal voltages of 3.6V–3.7V and maximum charge voltages up to 4.425V. Its absolute maximum VDD–VSS rating is 12V, and its voltage detection ranges (e.g., 2.500V–4.425V) are calibrated for 1-cell operation; using it in 2-cell stacks would result in incorrect protection triggering or failure to detect faults.
How does the 0V battery charge function operate in the AP9101CK-AHTRG1?
The 0V battery charge function is factory-enabled in the AHTRG1 variant and allows the IC to enter a special wake-up state when the battery voltage is 0V. Upon charger connection, the device activates internal circuitry to begin trickle charging, lifting the cell voltage above the 1.2V threshold required for normal operation. This eliminates the need for external pre-charge circuits and enables full recovery of self-discharged cells in sealed consumer devices.
AP9101CK-AHTRG1 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-AHTRG1 FAQ
1.How can I place an order for AP9101CK-AHTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CK-AHTRG1 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-AHTRG1 reliable?
The price and inventory of AP9101CK-AHTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CK-AHTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CK-AHTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CK-AHTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CK-AHTRG1?
AP9101CK-AHTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CK-AHTRG1 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-AHTRG1?
For technical support, including AP9101CK-AHTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CK-AHTRG1 requirements.
6.How does Aetrix verify that AP9101CK-AHTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CK-AHTRG1 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-AHTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CK-AHTRG1?
All AP9101CK-AHTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CK-AHTRG1, 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-AHTRG1 part is unused and in its original packaging.
Return procedure for AP9101CK-AHTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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