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Diodes Incorporated AP9101CK-AZTRG1
- Part No.:
- AP9101CK-AZTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CK-AZTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,348
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Product details
Overview
AP9101CK-AZTRG1 from Diodes Incorporated is a single-chip lithium-ion/polymer battery protection IC for 1-cell packs, featuring overcharge detection at 4.375 V ±25 mV, overdischarge detection at 2.500 V ±35 mV, discharge overcurrent detection at 0.150 V ±15 mV, and built-in 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 and selectable power-down mode.
For engineers reviewing the AP9101CK-AZTRG1 datasheet, AP9101CK-AZTRG1 pinout, AP9101CK-AZTRG1 application, or AP9101CK-AZTRG1 equivalent, this device is selected for compact, low-power, high-accuracy battery safety in portable medical devices, power tools, and Bluetooth headsets where precise voltage thresholds and ultra-low quiescent current (3.0 µA typ) are critical.
Technical Context
The AP9101CK-AZTRG1 integrates independent voltage comparators for overcharge (VCU = 4.375 V), overdischarge (VDL = 2.500 V), and overvoltage charger (VOVCHG = 8.0 V), each with configurable hysteresis and ±25–±100 mV accuracy. Its logic circuit drives CO and DO outputs to control charge/discharge FETs based on real-time VM–VSS differential sensing and VDD–VSS battery voltage monitoring.
It implements fixed internal delay timers (tCU = 1.0 s typ, tDL = 128 ms typ, tDOC = 16 ms typ, tSHORT = 8 µs typ) with ±20% accuracy at +25°C and supports dual operating modes: power-down (0.01 µA typ) and auto-wake-up. The VM pin interfaces directly to the battery pack's sense node between P− and the discharge current-sense resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375 V ±25 mV - sets precise upper battery voltage limit before disabling charge path |
| Overdischarge Detection Voltage | 2.500 V ±35 mV - prevents deep discharge damage to Li+ cell during load operation |
| Discharge Overcurrent Threshold | 0.150 V ±15 mV - triggers DO shutdown when sense resistor voltage exceeds safe discharge current |
| Quiescent Current (Operation) | 3.0 µA typ at VDD = 3.5 V - enables multi-year runtime in always-connected battery packs |
| VM–VSS Short-Circuit Detection | 0.700 V ±100 mV - detects hard short (<10 ms response) by sensing sudden VM rise during discharge |
| Charge Overcurrent Threshold | −0.150 V ±15 mV - monitors reverse voltage across sense resistor to halt excessive charging current |
| Overvoltage Charger Detection | 8.0 V ±2 V - protects against faulty chargers by disabling CO when VDD–VM exceeds safe input |
| Operating Temperature Range | −40 °C to +85 °C - qualified for industrial and consumer portable equipment environments |
Pinout & Package
AP9101CK-AZTRG1 is packaged in SOT25 (5-pin) with lead-free, RoHS-compliant construction. Pin 1 is marked and corresponds to VM; all pins are electrically defined per Diodes DS37771 Rev. 8–3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM (Pin 1) | Current-sense input | Monitors voltage drop across external sense resistor between P− and battery negative; enables overcurrent/short detection |
| VDD (Pin 2) | Positive supply input | Connects to battery positive; powers internal circuitry and provides reference for all voltage detectors |
| VSS (Pin 3) | Negative supply reference | Direct connection to battery negative; serves as ground reference for all analog comparators and logic |
| DO (Pin 4) | Discharge FET gate driver | Drives gate of external N-MOSFET in discharge path; pulls low to disable discharge during fault conditions |
| CO (Pin 5) | Charge FET gate driver | Drives gate of external N-MOSFET in charge path; pulls low to disable charging during overvoltage or overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Fixed internal delay timers | Eliminates need for external timing capacitors-reduces BOM count and PCB footprint in space-constrained packs |
| Selectably enabled 0V battery charge | Allows recovery of deeply discharged cells (0 V) using standard charger without manual intervention or reset |
| Programmable power-down mode | Reduces current draw to 0.01 µA typ, extending shelf life and enabling long-term storage without capacity loss |
| High-voltage CMOS process | Supports up to 30 V between VDD and VM-robust against transient charger spikes and reverse-connection events |
| Factory-configurable thresholds | Delivers exact VCU/VDL/VDOC values (e.g., 4.375 V / 2.500 V / 0.150 V) without external resistor networks or trimming |
Applications
| Portable Power Tools | Wireless Headsets |
|---|---|
Use Scenario: Cordless drill/driver with 1-cell Li+ pack subject to high pulse currents and thermal stress during motor stall. IC Role / Device Role / Timing Role: Battery protection IC monitoring VDD–VSS voltage and VM–VSS differential to enforce overdischarge (2.500 V) and discharge overcurrent (0.150 V) cutoff within 128 ms and 16 ms respectively. Use Value: Prevents irreversible cell degradation during high-current loads while maintaining <3 µA operational current to avoid standby drain. |
Use Scenario: True wireless stereo (TWS) earbuds requiring ultra-low-power protection for 100–200 mAh Li-poly cells. IC Role / Device Role / Timing Role: Single-chip safety manager enabling 0V charge recovery and power-down mode (0.01 µA) to preserve charge during months of storage. Use Value: Eliminates need for external timing components and supports factory-set precision thresholds-reducing design cycle time and test complexity. |
| Medical Wearables | Smart Home Sensors |
Use Scenario: Continuous glucose monitor (CGM) with sealed 1-cell Li+ battery operating unattended for 14+ days. IC Role / Device Role / Timing Role: Primary protection element detecting overcharge (4.375 V), overdischarge (2.500 V), and short-circuit (0.700 V) with ±25 mV accuracy to ensure regulatory compliance. Use Value: Meets IEC 62133 safety requirements with integrated hysteresis and fixed delay timing-no calibration or firmware overhead required. |
Use Scenario: Battery-powered Zigbee motion sensor deployed in HVAC ducts with temperature extremes (−25 °C to +70 °C). IC Role / Device Role / Timing Role: Voltage and current supervisor maintaining operation across −40 °C to +85 °C ambient, using RVMD/RVMS internal resistors for stable VM biasing. Use Value: Delivers guaranteed performance across full industrial temperature range without external compensation components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Seiko Instruments S-8261AAL-M6T1U | Fixed 4.25 V overcharge threshold; no 0V charge function; requires external capacitor for delay timing | Lacks programmable thresholds and integrated short-circuit detection; suited only for cost-sensitive, non-recoverable packs | Choose only if fixed 4.25 V OCV and absence of 0V charge are acceptable; higher BOM count due to external timing cap |
| Ricoh RP502K001B-TR-F | Supports 2-cell configuration; overdischarge threshold fixed at 2.0 V; no overvoltage charger detection | Designed for multi-cell systems; lacks VOVCHG protection needed for USB PD or fast-charging adapters | Select only for 2-cell designs; not drop-in compatible-requires redesign of sense network and layout |
Compared with S-8261AAL-M6T1U and RP502K001B-TR-F, AP9101CK-AZTRG1 delivers factory-programmed precision thresholds, zero external timing components, 0V charge recovery, and overvoltage charger detection-making it uniquely suitable for next-generation single-cell Li+ packs demanding safety, longevity, and minimal footprint.
Availability
AP9101CK-AZTRG1 is available at Aetrix Electronics and suitable for portable power tools, wireless headsets, medical wearables, and smart home sensors requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for AP9101CK-AZTRG1 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 series belongs to Diodes' battery protection IC product line, engineered specifically for compact, high-accuracy, low-quiescent-current safety management in single-cell lithium-based battery packs used in portable electronics.
FAQ
What is the function of the VM pin on AP9101CK-AZTRG1?
The VM pin serves as the current-sense input terminal, measuring the voltage difference between the battery's P− node and the discharge current-sense resistor's low-side end. It enables detection of discharge overcurrent, charge overcurrent, and short-circuit conditions by comparing VM–VSS against internal thresholds (e.g., 0.150 V for discharge overcurrent). Internal RVMS and RVMD resistors provide controlled biasing during fault states.
Does AP9101CK-AZTRG1 support both charge and discharge MOSFET control?
Yes. AP9101CK-AZTRG1 provides independent gate drive outputs: CO (Charge Output) controls the gate of the charge-path N-MOSFET, and DO (Discharge Output) controls the gate of the discharge-path N-MOSFET. Each output switches between high-impedance and low-level states to enable or disable its respective FET, supporting full bidirectional protection including overcharge, overdischarge, and overcurrent in both directions.
How does the 0V battery charge function operate?
The 0V battery charge function is factory-enabled in AP9101CK-AZTRG1 and allows the IC to exit power-down mode when a charger applies voltage-even if the battery voltage reads 0 V due to self-discharge. Once VDD rises above 1.2 V, the device activates and permits charging current flow through the CO-controlled FET, enabling full recovery without manual reset or external wake-up circuitry.
What is the maximum allowable voltage between VDD and VM pins?
The absolute maximum rating for VDD-to-VM voltage is 30 V, enabled by Diodes' high-voltage CMOS process. This withstand capability protects the IC against transient overvoltage events during charger connection/disconnection, reverse polarity attempts, or inductive kickback in high-current battery systems-ensuring robust operation beyond typical 5 V or 12 V charger rails.
AP9101CK-AZTRG1 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
AP9101CK-AZTRG1 FAQ
1.How can I place an order for AP9101CK-AZTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CK-AZTRG1 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-AZTRG1 reliable?
The price and inventory of AP9101CK-AZTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CK-AZTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CK-AZTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CK-AZTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CK-AZTRG1?
AP9101CK-AZTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CK-AZTRG1 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-AZTRG1?
For technical support, including AP9101CK-AZTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CK-AZTRG1 requirements.
6.How does Aetrix verify that AP9101CK-AZTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CK-AZTRG1 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-AZTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CK-AZTRG1?
All AP9101CK-AZTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CK-AZTRG1, 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-AZTRG1 part is unused and in its original packaging.
Return procedure for AP9101CK-AZTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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