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Diodes Incorporated AP9101CAK-BCTRG1
- Part No.:
- AP9101CAK-BCTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-BCTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:4,432
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Product details
Overview
AP9101CAK-BCTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.375V ±25mV, overdischarge detection at 2.500V ±35mV, discharge overcurrent detection at 0.095V ±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 to enforce safety cutoffs in portable power tools, Bluetooth headsets, and wearable medical monitors.
For engineers reviewing the AP9101CAK-BCTRG1 datasheet, AP9101CAK-BCTRG1 pinout, AP9101CAK-BCTRG1 application, or AP9101CAK-BCTRG1 equivalent, this device delivers verified voltage accuracy, selectable 0V-charge capability, auto-release overcharge behavior, and high-voltage VM–VDD tolerance up to 30V - critical for robust battery management in space-constrained consumer and industrial designs.
Technical Context
The AP9101CAK-BCTRG1 implements dual independent voltage monitoring paths: one between VDD–VSS for cell voltage (overcharge/overdischarge), and another across VM–VSS for current-sense voltage (discharge/charge overcurrent, short-circuit). Its logic circuit enforces auto-release overcharge protection and supports both power-down and auto-wake-up modes via factory configuration.
It integrates precision analog comparators with ±25mV overcharge detection accuracy, built-in delay timers (tCU/tDL/tDOC) with ±20% tolerance, and internal pull-up/pull-down resistors (RVMD/RVMS) for automatic status recovery during overdischarge or short-circuit events - eliminating need for external biasing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - sets precise upper cell voltage limit before CO pin disables charge path |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers DO pin shutdown to prevent deep discharge damage to Li+ cell |
| Discharge Overcurrent Threshold | 0.095V ±15mV - detects excessive load current via sense resistor voltage drop at VM pin |
| Operating Current (Typ) | 3.0µA at VDD = 3.5V - enables multi-year battery standby life in always-on wearables |
| VM–VDD Absolute Max | 30V - supports high-side charger monitoring without level-shifting circuitry |
| 0V Battery Charge Function | Enabled - allows safe recharge initiation even after full self-discharge to 0V |
| Package | SOT25 - 5-pin compact surface-mount package with 1.6mm × 2.9mm footprint |
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) | Current Sense Input | Monitors voltage drop across external sense resistor to detect discharge/charge overcurrent and short-circuit conditions |
| 2 (VDD) | Positive Supply Input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO outputs |
| 3 (VSS) | Negative Supply Reference | Ground reference for all internal comparators and logic; tied to battery negative |
| 4 (DO) | Discharge Control Output | Drives gate of external N-MOSFET to disconnect load when overdischarge or overcurrent occurs |
| 5 (CO) | Charge Control Output | Drives gate of external N-MOSFET to disconnect charger when overcharge or charge overcurrent occurs |
Key Features
| Feature | Design Value |
|---|---|
| Fixed internal delay timers | Eliminates external capacitors for tCU (overcharge), tDL (overdischarge), and tDOC (discharge overcurrent) - reduces BOM count and layout area |
| Auto-release overcharge mode | Automatically re-enables charging when cell voltage drops below 4.175V (VCL), avoiding manual reset requirement |
| Selectable 0V battery charge | Factory-configured to permit safe recharge initiation from fully depleted 0V state - essential for long-storage applications |
| High-accuracy voltage detection | ±25mV overcharge and ±35mV overdischarge thresholds ensure tight cell voltage window control per JEITA guidelines |
| Ultra-low power-down current | 0.01µA typical - extends shelf life of sealed battery packs during distribution and storage |
Applications
| Power Tool Battery Packs | Wireless Earbud Charging Cases |
|---|---|
Use Scenario: Rechargeable 1-cell Li+ pack powering cordless drills with peak 20A discharge pulses. IC Role / Device Role / Timing Role: Protection IC enforcing overcurrent cutoff within 10ms (tDOC) and overvoltage lockout at 4.375V to prevent thermal runaway. Use Value: Prevents MOSFET failure during motor stall by detecting 0.095V sense-resistor drop - enabling reliable 500-cycle pack lifetime. |
Use Scenario: Compact 1-cell Li+ battery inside charging case supplying 500mA to earbuds during USB-C fast charging. IC Role / Device Role / Timing Role: Dual-role protector managing both charge termination (via CO) and load disconnect (via DO) with 0V-charge support. Use Value: Enables full recharge after 12-month shelf storage by initiating charge at 0V battery state - eliminating user "dead case" complaints. |
| Implantable Medical Sensors | Smart RFID Asset Tags |
Use Scenario: Hermetically sealed 1-cell Li+ battery powering continuous glucose monitor with 10-year operational target. IC Role / Device Role / Timing Role: Low-power protector maintaining 3.0µA operating current and auto-wake-up from overdischarge to sustain firmware updates. Use Value: Extends usable battery capacity by 18% versus discrete solutions due to integrated hysteresis and zero external bias components. |
Use Scenario: Passive UWB-enabled asset tag with 1-cell Li+ battery scanned weekly in warehouse inventory systems. IC Role / Device Role / Timing Role: Safety supervisor detecting 30V VM–VDD transients during ESD-prone handling and disabling charge path within 100ns (tSHORT). Use Value: Survives >2000V HBM ESD events without latch-up, ensuring field reliability across 50,000-unit deployments. |
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 |
|---|---|---|---|
| R5460N258AA-TR | Fixed 4.250V overcharge threshold; no 0V-charge option; SOT-25 package | Lacks selectable 0V-charge and auto-release - requires external wake-up circuit for deep-discharge recovery | Choose only if design uses standard 4.2V cells and avoids long-term storage scenarios |
| SE9101B-S16G | Higher 5.5µA operating current; ±50mV overcharge accuracy; same SOT-25 footprint | Lower voltage accuracy increases risk of premature cutoff in high-precision medical devices | Acceptable for cost-sensitive consumer electronics where ±50mV tolerance is acceptable |
Compared with R5460N258AA-TR and SE9101B-S16G, the AP9101CAK-BCTRG1 provides tighter voltage accuracy (±25mV), factory-enabled 0V-charge, and lower quiescent current - making it optimal for medical, industrial, and premium portable equipment requiring guaranteed deep-discharge recovery and long shelf life.
Availability
AP9101CAK-BCTRG1 is available at Aetrix Electronics and suitable for power tool battery packs, wireless earbud charging cases, implantable medical sensors, and smart RFID asset tags requiring stable component supply, long-term lifecycle assurance, and RoHS/Green compliance.
Supply support for AP9101CAK-BCTRG1 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 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, medical, and industrial applications - emphasizing minimal external component count and factory-programmable functionality.
FAQ
What is the function of the VM pin on the AP9101CAK-BCTRG1?
The VM pin serves as the current-sense input that monitors voltage drop across an external sense resistor between the battery's P− terminal and load/charger. It enables detection of discharge overcurrent (at 0.095V), charge overcurrent (at −0.095V), and short-circuit events (at 0.700V), directly controlling DO and CO output states without external amplification.
Does the AP9101CAK-BCTRG1 support automatic recovery from overdischarge?
Yes - when configured in auto-wake-up mode (as indicated by the 'A' in position 7 of the part number), the AP9101CAK-BCTRG1 recovers from overdischarge upon battery voltage rising above 2.900V (VDU) or after sustained time exceeding tDLR, eliminating need for external charger-triggered reset in wearable and medical applications.
Can the AP9101CAK-BCTRG1 be used with 2-cell battery configurations?
No - the AP9101CAK-BCTRG1 is strictly designed for 1-cell Li+ or Li-polymer batteries with maximum VDD–VSS operating range of 1.5V to 5.5V. For 2-cell stacks (up to 8.4V), Diodes' AP9211 or AP9221 series - rated for higher supply voltage and dual-cell voltage monitoring - must be used instead.
What does the 'BCTRG1' suffix indicate in AP9101CAK-BCTRG1?
The 'BCTRG1' suffix specifies factory-programmed electrical parameters: overcharge detection at 4.375V, overcharge release at 4.175V, overdischarge detection at 2.500V, overdischarge release at 2.900V, discharge overcurrent at 0.095V, short-circuit detection at 0.700V, and charge overcurrent at −0.095V; 'TRG1' denotes tape-and-reel packaging and RoHS/Green compliance.
AP9101CAK-BCTRG1 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-BCTRG1 FAQ
1.How can I place an order for AP9101CAK-BCTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-BCTRG1 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-BCTRG1 reliable?
The price and inventory of AP9101CAK-BCTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-BCTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-BCTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-BCTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-BCTRG1?
AP9101CAK-BCTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-BCTRG1 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-BCTRG1?
For technical support, including AP9101CAK-BCTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-BCTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-BCTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-BCTRG1 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-BCTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-BCTRG1?
All AP9101CAK-BCTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-BCTRG1, 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-BCTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-BCTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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