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Diodes Incorporated AP9101CAK-BXTRG1
- Part No.:
- AP9101CAK-BXTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-BXTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,863
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Product details
Overview
AP9101CAK-BXTRG1 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 0.150V ±15mV, and integrated fixed-delay timing with no external capacitor required. It controls external N-channel MOSFETs via DO (discharge gate) and CO (charge gate) pins in portable power tools, Bluetooth headsets, and wearable medical monitors.
For engineers reviewing the AP9101CAK-BXTRG1 datasheet, AP9101CAK-BXTRG1 pinout, AP9101CAK-BXTRG1 application, or AP9101CAK-BXTRG1 equivalent, this device delivers verified voltage accuracy, selectable 0V-charge capability, and RoHS-compliant SOT25 packaging - critical for compact, safety-certified Li+ pack designs requiring low quiescent current (3.0µA typ) and high-voltage VM–VDD tolerance (30V).
Technical Context
The AP9101CAK-BXTRG1 implements dual-threshold voltage monitoring with independent hysteresis for overcharge (4.175V release) and overdischarge (2.900V release), enabling stable recovery without oscillation. Its VM pin senses current-sense resistor voltage with ±15mV accuracy for discharge overcurrent and ±100mV for short-circuit detection.
It integrates a high-voltage CMOS process supporting up to 30V between VDD and VM, enabling direct connection to charger inputs without level-shifting. The device supports factory-configured options including auto-release overcharge protection mode and selectable 0V battery charge function - both confirmed in the ordering code "AK" and suffix "G1".
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - sets precise upper cell voltage limit before disabling charge FET |
| Overdischarge Detection Voltage | 2.500V ±35mV - prevents deep discharge damage to 1-cell Li+ anode integrity |
| Discharge Overcurrent Threshold | 0.150V ±15mV - enables accurate current limiting using standard 10mΩ sense resistors |
| Quiescent Current (Operation) | 3.0µA typical at VDD = 3.5V - extends shelf life and standby runtime in battery-powered systems |
| VM–VDD Absolute Max Rating | 30V - allows direct integration with high-voltage chargers without external clamping |
| Package | SOT25 - 5-pin surface-mount package with 1.6mm × 2.9mm footprint for space-constrained battery modules |
| 0V Battery Charge Function | Enabled - permits safe reactivation of deeply discharged cells (0V) via external charger |
| Power-Down Mode | Selectable - reduces current to 0.1µA typical when activated, requiring charger wake-up |
Pinout & Package
SOT25 package: 5-pin, small-outline transistor with gull-wing leads; pin 1 marked; moisture sensitivity level (MSL) 1 per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current Sense Input | Monitors voltage drop across external sense resistor to detect discharge/charge overcurrent and short circuit |
| VDD | Positive Supply Input | Connects to battery positive terminal; powers internal logic and gate drivers |
| VSS | Negative Supply Reference | Ground reference for all internal comparators and logic; tied to battery negative |
| DO | Discharge Control Output | Drives gate of external discharge N-MOSFET; pulled low during overdischarge or overcurrent fault |
| CO | Charge Control Output | Drives gate of external charge N-MOSFET; pulled low during overcharge, charge overcurrent, or overvoltage charger fault |
Key Features
| Feature | Design Value |
|---|---|
| Fixed internal delay timers | Eliminates need for external timing capacitors - reduces BOM count and PCB area in battery packs |
| ±25mV overcharge voltage accuracy | Enables tight cell voltage control within JEITA-recommended limits for cycle life optimization |
| 0V battery charge enable | Allows recovery of fully depleted cells without manual intervention or pack disassembly |
| 30V VM–VDD rating | Supports compatibility with fast-charging adapters delivering >5V without external protection diodes |
| Selectably enabled power-down mode | Reduces system leakage to <0.1µA during long-term storage - critical for medical and IoT devices |
Applications
| Wireless Headsets | Portable Power Tools |
|---|---|
|
Use Scenario: Compact Li+ battery pack powering Bluetooth audio with intermittent high-current bursts during codec processing and RF transmission. IC Role / Device Role / Timing Role: Protection IC monitoring cell voltage and discharge current in real time; triggers DO pin shutdown within 14ms (tDOC typ) during motor stall or shorted driver stage. Use Value: Prevents thermal runaway during sustained 3A+ loads while maintaining <3µA quiescent draw during idle streaming. |
Use Scenario: 1-cell 3.7V Li+ pack in cordless screwdriver with peak discharge currents exceeding 10A during torque engagement. IC Role / Device Role / Timing Role: Dual-threshold voltage supervisor and current-sense comparator; disables discharge path via DO pin when VM–VSS exceeds 0.150V for ≥14ms. Use Value: Enables use of low-RDS(on) MOSFETs without external current-limiting ICs - reducing bill-of-materials by two components. |
| Wearable Medical Monitors | Smart Bluetooth Trackers |
|
Use Scenario: FDA-classified wearable ECG patch requiring >12-month shelf life and guaranteed startup from 0V after long-term storage. IC Role / Device Role / Timing Role: Battery safety manager with factory-enabled 0V charge function and auto-release overcharge protection; wakes from 0.1µA power-down on charger attach. Use Value: Eliminates need for backup coin-cell or mechanical reset switch - simplifying enclosure design and sterilization validation. |
Use Scenario: Asset tracker with GPS + BLE module operating intermittently on a 1-cell Li+ battery, exposed to temperature extremes (-20°C to +70°C). IC Role / Device Role / Timing Role: Precision voltage protector with ±35mV overdischarge accuracy at -40°C to +85°C; maintains valid VDL threshold across full industrial range. Use Value: Guarantees minimum 2.5V cutoff even at low temperatures - preventing copper shunt formation and irreversible capacity loss. |
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 |
|---|---|---|---|
| R5460N255AA-TR | Fixed 4.250V overcharge threshold; no 0V charge option; SOT23-6 package | Lacks configurable thresholds and 0V recovery - suitable only for cost-sensitive, non-recoverable consumer packs | Choose only if fixed 4.25V OCV and absence of 0V charge is acceptable; requires redesign for SOT23-6 layout |
| SE9011B-S18L | ±50mV overcharge accuracy; 2.0V–3.4V adjustable VDL range; no overvoltage charger detection | Missing VOVCHG/VOVCHGR function - cannot protect against faulty >5.5V USB-C PD chargers | Select when wider VDL adjustability is needed but charger overvoltage immunity is not required; verify VM pin drive strength for 10mΩ RSENSE |
Compared with R5460N255AA-TR and SE9011B-S18L, the AP9101CAK-BXTRG1 provides tighter voltage accuracy (±25mV), integrated overvoltage charger detection (8.0V), and factory-enabled 0V charge - making it uniquely suited for medical and industrial 1-cell packs where safety certification, field recovery, and charger interoperability are mandatory.
Availability
AP9101CAK-BXTRG1 is available at Aetrix Electronics and suitable for wireless headsets, portable power tools, and wearable medical monitors requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.
Supply support for AP9101CAK-BXTRG1 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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP9101C belongs to Diodes' battery protection IC product line, designed specifically for high-accuracy, low-power, single-cell Li+ pack safety - emphasizing precision voltage thresholds, integrated timing, and robust MOSFET gate drive capability.
FAQ
What is the function of the VM pin on the AP9101CAK-BXTRG1?
The VM pin serves as the current-sense input, measuring the voltage difference between itself and VSS to detect discharge overcurrent, charge overcurrent, and short-circuit conditions. It interfaces directly with the external sense resistor (e.g., 10mΩ) and features internal resistance networks (RVMS/RVMD) that activate selectively during fault states to stabilize sensing and enable automatic recovery - confirmed in the functional block diagram and electrical characteristics table.
Does the AP9101CAK-BXTRG1 support overvoltage protection for the charger input?
Yes - the AP9101CAK-BXTRG1 includes a dedicated overvoltage charger detection circuit monitoring the voltage between VDD and VM pins. It triggers CO pin shutdown when this voltage exceeds 8.0V (±2V), and releases at 7.3V (±2V), with no delay. This function is explicitly documented in Section 7 of the datasheet and confirmed in the ordering matrix under "Overvoltage Charger Detection Voltage."
Can the AP9101CAK-BXTRG1 be used with a 0V battery?
Yes - the "AK" variant includes factory-enabled 0V battery charge functionality. When the battery voltage is 0V, the IC permits charging to resume once the charger applies ≥1.2V to VDD, as specified in the Electrical Characteristics table (V0CHA = 1.2V). This behavior is distinct from variants without the 0V option (e.g., AP9101Cxxx-ABTRG1) and is validated in the Operation Description section.
What is the maximum allowable voltage between VDD and VM pins?
The absolute maximum rating between VDD and VM is 30V, as stated in the Absolute Maximum Ratings table (Symbol VDM). This high tolerance enables direct connection to fast-charging adapters or multi-tap chargers without external clamping components - a key differentiator from competing protection ICs rated only to 5.5V or 12V on this node.
AP9101CAK-BXTRG1 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-BXTRG1 FAQ
1.How can I place an order for AP9101CAK-BXTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-BXTRG1 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-BXTRG1 reliable?
The price and inventory of AP9101CAK-BXTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-BXTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-BXTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-BXTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-BXTRG1?
AP9101CAK-BXTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-BXTRG1 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-BXTRG1?
For technical support, including AP9101CAK-BXTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-BXTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-BXTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-BXTRG1 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-BXTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-BXTRG1?
All AP9101CAK-BXTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-BXTRG1, 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-BXTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-BXTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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