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Diodes Incorporated AP9101CAK-ABTRG1
- Part No.:
- AP9101CAK-ABTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-ABTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,011
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Product details
Overview
AP9101CAK-ABTRG1 from Diodes Incorporated is a single-chip lithium-ion/polymer battery protection IC with integrated voltage and current monitoring for 1-cell packs. It provides overcharge (4.425V ±25mV), overdischarge (2.500V ±35mV), discharge overcurrent (0.150V ±15mV), charge overcurrent (−0.150V ±15mV), short-circuit (0.700V ±100mV), and overvoltage charger (8.0V ±2V) protection, using external N-channel MOSFETs controlled via CO/DO pins in portable power tools and medical wearables.
For engineers reviewing the AP9101CAK-ABTRG1 datasheet, AP9101CAK-ABTRG1 pinout, AP9101CAK-ABTRG1 application, or AP9101CAK-ABTRG1 equivalent, this device supports precise, low-power battery safety management with selectable 0V charge and power-down mode, fixed delay timing, and high-voltage tolerance (30V VDD–VM).
Technical Context
The AP9101CAK-ABTRG1 implements independent analog comparators for six fault conditions-overcharge, overdischarge, discharge overcurrent, charge overcurrent, short circuit, and overvoltage charger-with dedicated detection thresholds and ±20% delay accuracy. Its logic circuit uses internal level shifters to drive CO and DO outputs directly, enabling control of external high-side and low-side N-MOSFETs without external gate drivers.
It features dual sensing paths: VDD–VSS monitors cell voltage, while VM–VSS senses current-sense resistor voltage for overcurrent/short detection. The built-in RVMD/RVMS resistors enable automatic status recovery in overdischarge and overcurrent modes, eliminating need for external pull-up/down components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.425V ±25mV - triggers CO shutdown when cell exceeds safe charging limit |
| Overdischarge Detection Voltage | 2.500V ±35mV - disables DO to prevent deep discharge damage |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via sense resistor |
| Charge Overcurrent Threshold | −0.150V ±15mV - identifies reverse-current faults during charging |
| Short-Circuit Detection Voltage | 0.700V ±100mV - initiates sub-1µs DO cutoff for hard shorts |
| Operating Current (Typ) | 3.0µA at 3.5V - enables multi-year battery life in standby |
| VDD–VM Absolute Max | 30V - supports robust operation across wide input transients |
Pinout & Package
AP9101CAK-ABTRG1 is packaged in SOT25 (5-pin) with lead-free, RoHS-compliant construction. Pin 1 marked; no NC pin used in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current Sense Input | Monitors voltage drop across external Rsense for overcurrent/short detection |
| VDD | Positive Supply Input | Connects to battery anode; powers internal circuitry and drives CO/DO outputs |
| VSS | Negative Power Reference | System ground reference for all voltage comparators and logic |
| DO | Discharge Control Output | Drives gate of external N-MOSFET to interrupt discharge path on fault |
| CO | Charge Control Output | Drives gate of external N-MOSFET to interrupt charge path on fault |
Key Features
| Feature | Design Value |
|---|---|
| Fixed Delay Timing | No external capacitor required - reduces BOM count and layout area |
| Selectable 0V Battery Charge | Factory-enabled - allows recharge of fully depleted cells without manual wake-up |
| Power-Down Mode Option | 0.01µA typ standby current - extends shelf life of sealed battery packs |
| Overvoltage Charger Protection | 8.0V detection threshold - safeguards against faulty or mismatched chargers |
| High-Accuracy Hysteresis | ±50mV overcharge hysteresis - prevents oscillation near trip points |
Applications
| Power Tools | Medical Wearables |
|---|---|
|
Use Scenario: Cordless drill with 1-cell Li-ion pack subjected to high-pulse discharge currents and thermal cycling. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage and current-sense node to disable discharge MOSFET within 10ms of overcurrent event. Use Value: Prevents MOSFET thermal runaway and cell venting during stall conditions, meeting IEC 62133 safety compliance. |
Use Scenario: Disposable glucose monitor with sealed 1-cell LiPo battery requiring >2-year shelf life and reliable low-voltage wake-up. IC Role / Device Role / Timing Role: Low-quiescent protector enabling 0V charge recovery and auto-wake-up from overdischarge without external intervention. Use Value: Eliminates field failures due to self-discharge-induced deep sleep, reducing warranty returns by >90% in clinical trials. |
| Bluetooth Headsets | Smart Locks |
|
Use Scenario: Compact wireless earbuds with tight space constraints and frequent partial-charge cycles. IC Role / Device Role / Timing Role: Dual-threshold overcharge/overdischarge supervisor with ±25mV accuracy to maximize usable capacity without compromising safety margin. Use Value: Enables 15% higher effective cycle life versus generic protectors by tightening voltage guardbands without false trips. |
Use Scenario: Battery-powered smart door lock exposed to outdoor temperature extremes and infrequent but critical discharge events. IC Role / Device Role / Timing Role: Wide-temperature protection IC maintaining ±35mV overdischarge accuracy from −40°C to +85°C ambient. Use Value: Guarantees reliable lock/unlock operation down to −30°C, avoiding mechanical jamming caused by undervoltage brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5460N442AA-TR | Fixed 4.42V overcharge, no 0V charge option, 5.5V max VDD | Lacks selectable power-down mode and overvoltage charger detection | Use where cost sensitivity outweighs charger fault protection and ultra-low standby current |
| BD14001GUL | Integrated charge/discharge FETs, 2.0V min operating voltage, no VM pin | Self-contained solution; no external MOSFETs required but less flexible current scaling | Prefer for space-constrained designs where 3A max continuous current suffices and BOM simplification is critical |
Compared with R5460N442AA-TR and BD14001GUL, AP9101CAK-ABTRG1 uniquely combines 30V VDD–VM tolerance, factory-configured 0V charge, and overvoltage charger detection-making it optimal for industrial-grade 1-cell packs needing robust fault coverage and long-term reliability.
Availability
AP9101CAK-ABTRG1 is available at Aetrix Electronics and suitable for power tools, medical wearables, Bluetooth headsets, and smart locks requiring stable component supply, full RoHS/Green compliance, and guaranteed lifecycle continuity.
Supply support for AP9101CAK-ABTRG1 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 AP9101C series belongs to Diodes' battery protection IC product line, engineered specifically for high-accuracy, low-power safety supervision of single-cell Li-ion/LiPo battery packs in consumer, industrial, and medical devices.
FAQ
What is the function of the VM pin on AP9101CAK-ABTRG1?
The VM pin serves as the current-sense input terminal, measuring voltage drop across an external sense resistor between the battery cathode and discharge FET source. It enables detection of discharge overcurrent, charge overcurrent, and short-circuit conditions with ±15mV accuracy at 25°C. Internal RVMS/RVMD resistors connect automatically during fault states to stabilize VM biasing and enable recovery.
Does AP9101CAK-ABTRG1 support both charge and discharge MOSFET control?
Yes - AP9101CAK-ABTRG1 provides independent gate drive outputs: CO controls the charge-path N-MOSFET, and DO controls the discharge-path N-MOSFET. Each output delivers typical 5kΩ on-resistance in high/low states, compatible with standard logic-level MOSFETs. The IC does not integrate FETs but is designed for external dual-N configurations.
How does the 0V battery charge function operate?
The 0V battery charge function is factory-enabled in AP9101CAK-ABTRG1 and permits charging of fully depleted cells (0V) by allowing the charger to raise battery voltage above 1.2V before normal protection logic activates. This avoids permanent lockout due to self-discharge and eliminates need for external wake-up circuitry in sealed products.
What is the significance of the "AB" suffix in AP9101CAK-ABTRG1?
The "AB" suffix denotes specific factory-programmed protection thresholds: overcharge detection at 4.425V, overcharge release at 4.225V, overdischarge detection at 2.500V, overdischarge release at 2.900V, discharge overcurrent at 0.150V, short-circuit at 0.700V, and charge overcurrent at −0.150V. All values are trimmed and verified per datasheet DS37771 Rev. 8-3.
AP9101CAK-ABTRG1 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
AP9101CAK-ABTRG1 FAQ
1.How can I place an order for AP9101CAK-ABTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-ABTRG1 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-ABTRG1 reliable?
The price and inventory of AP9101CAK-ABTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-ABTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-ABTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-ABTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-ABTRG1?
AP9101CAK-ABTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-ABTRG1 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-ABTRG1?
For technical support, including AP9101CAK-ABTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-ABTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-ABTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-ABTRG1 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-ABTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-ABTRG1?
All AP9101CAK-ABTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-ABTRG1, 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-ABTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-ABTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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