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Diodes Incorporated AP9101CAK-AUTRG1
- Part No.:
- AP9101CAK-AUTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-AUTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,363
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Product details
Overview
AP9101CAK-AUTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.300V ±25mV, overdischarge detection at 2.500V ±35mV, discharge overcurrent detection at 0.100V ±15mV, 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 functionality.
For engineers reviewing the AP9101CAK-AUTRG1 datasheet, AP9101CAK-AUTRG1 pinout, AP9101CAK-AUTRG1 application, or AP9101CAK-AUTRG1 equivalent, this device is selected for high-accuracy, low-quiescent-current battery safety in space-constrained portable electronics where precise voltage thresholds, auto-release protection behavior, and automotive-grade reliability are critical.
Technical Context
The AP9101CAK-AUTRG1 integrates independent voltage comparators for VDD–VSS (overcharge/overdischarge) and VM–VSS (discharge/charge overcurrent, short-circuit), each with configurable thresholds and ±20% delay accuracy. Its logic circuit enforces auto-release protection mode: CO returns high when VDD falls below 4.100V after overcharge, and DO returns high when VDD rises above 2.900V after overdischarge.
It uses high-voltage CMOS process enabling 30V tolerance between VDD and VM pins, supports selectable power-down mode (enabled here per "A" suffix), and includes internal RVMD/RVMS resistors (300kΩ/30kΩ typ) for automatic VM biasing during fault states-eliminating need for external pull-up/down components in typical configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.300V ±25mV - triggers CO low to disable charging when cell exceeds safe upper limit |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers DO low to halt discharge before deep cell depletion |
| Discharge Overcurrent Threshold | 0.100V ±15mV - detects excessive load current via sense resistor voltage drop at VM |
| Quiescent Current (Operation) | 3.0µA typ at 3.5V - enables multi-year battery shelf life in standby |
| VM–VSS Sense Range | −0.2V to +0.7V - supports bidirectional current sensing for charge/discharge monitoring |
| CO/DO Output Drive | 6kΩ typ high-side resistance - directly drives standard N-MOSFET gates without buffer |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive cabin environments |
Pinout & Package
AP9101CAK-AUTRG1 is packaged in SOT25 (5-pin) with lead-free, RoHS-compliant construction. Pin 1 marked with dot; pin numbering follows top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current-sense input | Monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short-circuit conditions |
| VDD | Positive supply input | Connects to battery positive terminal; powers internal circuitry and provides reference for all voltage detections |
| VSS | Negative supply ground | System ground reference for all analog comparators and digital logic; tied to battery negative |
| DO | Discharge control output | Drives gate of external N-MOSFET in discharge path; goes low to disconnect load during overdischarge or overcurrent |
| CO | Charge control output | Drives gate of external N-MOSFET in charge path; goes low to block charger during overcharge or charge overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| 0V Battery Charge Function | Enabled - allows recharging of fully depleted cells (0V) using external charger, preventing permanent pack disablement |
| Auto-Release Protection Mode | Configured - eliminates manual reset requirement; automatically restores charge/discharge paths upon voltage recovery |
| No External Timing Capacitor | Built-in fixed delay circuit - removes component count, board area, and tolerance drift associated with discrete RC networks |
| Power-Down Mode | Enabled (suffix "A") - reduces current to 0.1µA typ during overdischarge, extending survival time in storage |
| High-Voltage VM Pin | 30V rating between VDD and VM - accommodates high-side sensing topologies and tolerates transient charger spikes |
Applications
| Smart Wearables | Medical Portable Devices |
|---|---|
|
Use Scenario: Rechargeable wrist-worn health monitor with 1-cell Li+ battery operating in variable temperature environments. IC Role / Device Role / Timing Role: Primary battery protection controller enforcing strict voltage and current limits during wireless charging and continuous sensor operation. Use Value: Prevents thermal runaway during fast charging while maintaining 3.0µA operational current to extend firmware update cycles between charges. |
Use Scenario: Handheld diagnostic tool powered by sealed 1-cell LiPo with mandatory safety certification and zero field failures. IC Role / Device Role / Timing Role: Safety-critical protection layer that independently verifies cell voltage and current before enabling any power delivery path. Use Value: ±25mV overcharge detection accuracy ensures compliance with IEC 62133 and avoids false trips during voltage ripple from pulsed measurement loads. |
| Industrial IoT Sensors | Automotive Accessory Modules |
|
Use Scenario: Battery-powered environmental sensor node deployed outdoors with −40°C to +85°C ambient range and infrequent maintenance. IC Role / Device Role / Timing Role: Low-power guardian managing self-discharge protection, 0V recharge capability, and overtemperature-safe shutdown coordination. Use Value: 0.1µA power-down current extends dormant battery life beyond 5 years, reducing service logistics and total cost of ownership. |
Use Scenario: Keyless entry fob with integrated Li+ battery requiring AEC-Q200-aligned reliability and robust ESD immunity. IC Role / Device Role / Timing Role: Automotive-qualified protection IC providing 2,000V HBM ESD tolerance and stable operation under load dump transients. Use Value: 30V VM–VDD rating withstands ISO 7637-2 pulse 5a transients without latch-up, eliminating need for external TVS clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP9101CAK-AATRG1 | Higher overcharge detection (4.375V) and release (4.175V); same package and pinout | Suitable for higher-voltage Li+ chemistries (e.g., LiCoO₂ with wider VOC spread) | Select when tighter overcharge margin is needed without changing layout or firmware thresholds |
| AP9101CAK-ABTRG1 | Overcharge detection at 4.425V; identical timing, accuracy, and feature set | Optimized for high-capacity pouch cells with elevated full-charge plateau | Choose for applications requiring maximum energy utilization before cutoff, with same PCB footprint |
Compared with AP9101CAK-AUTRG1, the AATRG1 and ABTRG1 variants shift overcharge thresholds upward by +75mV and +125mV respectively-enabling higher usable capacity in cells with flatter charge curves-while retaining identical overdischarge, overcurrent, and timing parameters for drop-in compatibility in existing designs.
Availability
AP9101CAK-AUTRG1 is available at Aetrix Electronics and suitable for smart wearables, medical portable devices, industrial IoT sensors, and automotive accessory modules requiring stable component supply, long-term lifecycle support, and automotive-grade qualification.
Supply support for AP9101CAK-AUTRG1 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, automotive, and consumer markets.
The AP9101C series belongs to Diodes' battery protection IC product line, designed specifically for compact, high-accuracy, low-power safety monitoring in 1-cell lithium-ion and lithium-polymer battery packs used in portable and automotive applications.
FAQ
What is the function of the VM pin on AP9101CAK-AUTRG1?
The VM pin serves as the current-sense input for both charge and discharge overcurrent detection. It measures voltage drop across an external sense resistor placed between the battery negative and system ground. Internally, it connects to comparators monitoring VCOC (charge overcurrent), VDOC (discharge overcurrent), and VSHORT (short-circuit), with design-specified input range from −0.2V to +0.7V relative to VSS.
Does AP9101CAK-AUTRG1 support automatic recovery from overdischarge without external intervention?
Yes. AP9101CAK-AUTRG1 implements auto-release overdischarge protection: when battery voltage recovers to ≥2.900V (VDU), the DO pin automatically returns high to re-enable the discharge path. This occurs without requiring charger connection or external reset, provided the device is configured in auto-wake-up mode-which it is, as indicated by the "A" in the part number suffix.
How does the 0V battery charge function operate in AP9101CAK-AUTRG1?
The 0V battery charge function is factory-enabled in AP9101CAK-AUTRG1. When the battery voltage is 0V due to self-discharge, the IC permits external charger current to flow by keeping CO high, allowing the cell to recover to a functional voltage. Without this feature, the device would lock out charging until VDD reached ≥1.2V, making recovery impossible for deeply discharged cells.
What is the significance of the "TRG1" suffix in AP9101CAK-AUTRG1?
"TR" denotes tape-and-reel packaging, "G1" indicates RoHS-compliant and halogen-free ("Green") construction per Diodes' specifications (<900ppm Br/Cl, <1000ppm Sb). The "A" in "AU" specifies auto-wake-up mode (not power-down), and "U" identifies the specific voltage/delay configuration: 4.300V/4.100V overcharge, 2.500V/2.900V overdischarge, 0.100V discharge overcurrent, and −0.100V charge overcurrent thresholds.
AP9101CAK-AUTRG1 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-AUTRG1 FAQ
1.How can I place an order for AP9101CAK-AUTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-AUTRG1 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-AUTRG1 reliable?
The price and inventory of AP9101CAK-AUTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-AUTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-AUTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-AUTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-AUTRG1?
AP9101CAK-AUTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-AUTRG1 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-AUTRG1?
For technical support, including AP9101CAK-AUTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-AUTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-AUTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-AUTRG1 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-AUTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-AUTRG1?
All AP9101CAK-AUTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-AUTRG1, 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-AUTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-AUTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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