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Diodes Incorporated AP9101CK-AKTRG1
- Part No.:
- AP9101CK-AKTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CK-AKTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,928
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Product details
Overview
AP9101CK-AKTRG1 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 integrated fixed-delay timing with no external capacitor required. It controls external N-channel MOSFETs via dedicated CO and DO gate drive pins and supports 0V battery charge functionality.
For engineers reviewing the AP9101CK-AKTRG1 datasheet, AP9101CK-AKTRG1 pinout, AP9101CK-AKTRG1 application, or AP9101CK-AKTRG1 equivalent, this device is selected for precision cell voltage monitoring, low-quiescent-current battery safety systems, and compact 1-cell Li+ pack designs requiring configurable protection thresholds and auto-release behavior.
Technical Context
The AP9101CK-AKTRG1 implements independent analog comparators for VDD–VSS (cell voltage) and VM–VSS (current-sense voltage), each feeding into delay timers and logic that drives CO and DO outputs to control charge/discharge FETs. Its high-voltage CMOS process enables 30V tolerance between VDD and VM pins, supporting robust operation during charger transients.
It integrates selectable power-down mode (enabled by default per AKTRG1 suffix), 0V battery charge permission, and overvoltage charger detection at 8.0V ±2V - all implemented without external timing components. The device operates across –40°C to +85°C with supply voltage range 1.5V to 5.5V and consumes only 3.0µA typical in active mode.
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 - determines current-limit trip point using sense-resistor voltage drop |
| Supply Current (Active) | 3.0µA typ @ 3.5V - enables multi-year runtime in always-on battery monitoring |
| VM–VSS Pin Voltage Range | –0.3V to 5.5V - accommodates bidirectional current sensing and short-circuit detection |
| CO/DO Output Drive | 6kΩ typ "H" resistance - directly drives standard N-MOSFET gates without external buffers |
| Operating Temperature | –40°C to +85°C - qualified for consumer, industrial, and portable medical battery applications |
Pinout & Package
AP9101CK-AKTRG1 is packaged in SOT25 (5-pin) with lead-free, RoHS-compliant construction. Pin 1 marked; pinout validated per Diodes DS37771 Rev. 8-3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current-sense input | Monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short circuits |
| VDD | Positive supply input | Connects to battery positive terminal; powers internal circuitry and provides reference for voltage detection |
| VSS | Negative supply ground | System ground reference for all internal comparators and logic; tied to battery negative |
| DO | Discharge control output | Drives gate of discharge N-MOSFET; pulled low to disable discharge path during faults |
| CO | Charge control output | Drives gate of charge N-MOSFET; pulled low to disable charge path during overvoltage or overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Fixed internal delay timers | Eliminates need for external capacitors - reduces BOM count and PCB area in space-constrained packs |
| 0V battery charge enable | Allows recovery of deeply discharged cells (0V) via external charger without manual intervention |
| Selectable power-down mode | Reduces quiescent current to 0.1µA typ - extends shelf life and prevents parasitic drain during storage |
| Overvoltage charger detection | 8.0V ±2V threshold protects against faulty or mismatched chargers without additional components |
| High-accuracy hysteresis | Overcharge release at 4.050V (200mV hysteresis) prevents oscillation near trip points during marginal conditions |
Applications
| Power Tool Battery Packs | Wireless Headphone Charging Cases |
|---|---|
|
Use Scenario: 1-cell Li+ pack powering cordless drills with peak discharge currents >10A and frequent full-cycle charging. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage, discharge current, and charger overvoltage; auto-releases after fault clearance. Use Value: Prevents thermal runaway during high-current operation while enabling safe recharging of depleted cells down to 0V. |
Use Scenario: Compact 1-cell Li+ battery inside Bluetooth earbud case with tight space constraints and low standby current requirements. IC Role / Device Role / Timing Role: Low-power protection supervisor managing charge/discharge sequencing and detecting micro-short events during insertion/removal. Use Value: Achieves <3µA active current and <0.1µA sleep current - extends case standby time to >18 months without recharge. |
| Medical Wearable Monitors | Smart Home Sensor Nodes |
|
Use Scenario: Single-use or rechargeable 1-cell Li+ battery powering ECG patch with strict safety certification and zero-failure tolerance. IC Role / Device Role / Timing Role: Safety-critical voltage/current watchdog enforcing IEC 62368-1 compliance; detects overdischarge within 120ms (tDL typ). Use Value: Meets medical-grade accuracy (±25mV overcharge detection) and includes redundant overvoltage charger protection at 8.0V. |
Use Scenario: Long-life 1-cell Li+ battery in Zigbee temperature/humidity sensor deployed in HVAC ducts with seasonal temperature extremes. IC Role / Device Role / Timing Role: Wide-temperature protector operating reliably from –40°C to +85°C; maintains ±35mV overdischarge accuracy across full range. Use Value: Ensures consistent protection performance in uncontrolled environments without calibration drift or external compensation. |
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 threshold; no 0V charge function; 5-pin SOT-25 package | Lacks configurable hysteresis and overvoltage charger detection; suitable only for basic protection | Choose when cost sensitivity outweighs need for 0V recovery or charger overvoltage guard |
| Ricoh RP507K001B-TR-F | Supports 0V charge and overvoltage detection but uses 6-pin TSOT-26; higher 5.5µA active current | Requires larger footprint and draws >80% more active current than AP9101CK-AKTRG1 | Prefer only if TSOT-26 layout compatibility exists and ultra-low quiescent current is not critical |
Compared with S-8261AAL-M6T1U and RP507K001B-TR-F, the AP9101CK-AKTRG1 delivers tighter voltage accuracy, lower active/sleep current, and integrated overvoltage charger protection - making it optimal for next-generation compact, long-life, and safety-certified 1-cell Li+ systems.
Availability
AP9101CK-AKTRG1 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headphone charging cases, medical wearable monitors, and smart home sensor nodes requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.
Supply support for AP9101CK-AKTRG1 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 analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP9101C product line delivers single-chip Li+ battery protection with factory-configurable thresholds, fixed timing, and ultra-low power consumption - designed specifically for compact, cost-sensitive, and safety-critical 1-cell portable applications.
FAQ
What is the function of the VM pin on AP9101CK-AKTRG1?
The VM pin serves as the current-sense input, measuring voltage drop across an external sense resistor between the battery's P– terminal and load/charger. It enables detection of discharge overcurrent, charge overcurrent, and short-circuit events by comparing VM–VSS against internal thresholds (e.g., 0.150V for discharge overcurrent). Its ±0.3V to 5.5V rating supports bidirectional sensing and high-side fault detection.
Does AP9101CK-AKTRG1 support automatic recovery from overdischarge?
Yes - AP9101CK-AKTRG1 implements auto-release overdischarge protection. When battery voltage rises above the overdischarge release voltage (3.000V ±65mV), the DO pin returns high to re-enable the discharge FET. This occurs without external wake-up signals, provided the device is configured with power-down mode disabled (AKTRG1 suffix confirms power-down is selectable and enabled by default, but auto-wake-up remains functional during overdischarge recovery).
Can AP9101CK-AKTRG1 be used with 2-cell Li+ batteries?
No - AP9101CK-AKTRG1 is strictly rated for 1-cell Li+ operation, with absolute maximum VDD–VSS of 12V and recommended operating range of 1.5V to 5.5V. Its overcharge detection threshold (4.250V) and overdischarge threshold (2.400V) are calibrated for single-cell voltage ranges. Using it with 2-cell stacks (up to 8.4V) violates absolute maximum ratings and will cause permanent damage.
How does the 0V battery charge function operate in AP9101CK-AKTRG1?
The 0V battery charge function allows the IC to permit charging when the battery voltage is 0V due to self-discharge. It activates when charger voltage exceeds 1.2V (V0CHA), enabling CO output to turn on the charge FET even with no initial cell voltage. This feature is factory-configured and confirmed in the AKTRG1 ordering code as "Option 1 Permission", eliminating need for external wake-up circuitry.
AP9101CK-AKTRG1 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-AKTRG1 FAQ
1.How can I place an order for AP9101CK-AKTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CK-AKTRG1 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-AKTRG1 reliable?
The price and inventory of AP9101CK-AKTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CK-AKTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CK-AKTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CK-AKTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CK-AKTRG1?
AP9101CK-AKTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CK-AKTRG1 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-AKTRG1?
For technical support, including AP9101CK-AKTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CK-AKTRG1 requirements.
6.How does Aetrix verify that AP9101CK-AKTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CK-AKTRG1 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-AKTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CK-AKTRG1?
All AP9101CK-AKTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CK-AKTRG1, 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-AKTRG1 part is unused and in its original packaging.
Return procedure for AP9101CK-AKTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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