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Diodes Incorporated AP9101CAK-CDTRG1
- Part No.:
- AP9101CAK-CDTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-CDTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,267
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Product details
Overview
AP9101CAK-CDTRG1 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 0V battery charge functionality. It operates with 3.0µA typical current in active mode and supports SOT25 packaging for compact portable power management.
For engineers reviewing the AP9101CAK-CDTRG1 datasheet, AP9101CAK-CDTRG1 pinout, AP9101CAK-CDTRG1 application, or AP9101CAK-CDTRG1 equivalent, this device delivers precision voltage thresholds, fixed delay timing without external capacitors, selectable power-down mode, and high-voltage tolerance (30V between VDD and VM) for robust battery safety in space-constrained consumer and industrial battery packs.
Technical Context
The AP9101CAK-CDTRG1 implements dual-MOSFET control via independent CO (charge FET gate) and DO (discharge FET gate) outputs, with built-in level-shifting logic to drive external N-channel MOSFETs. Its protection logic includes auto-release overcharge behavior and configurable overdischarge recovery-either via charger connection (power-down version) or voltage rise above VDU (auto-wake-up version).
It integrates internal resistance networks (RVMD = 150–500kΩ, RVMS = 10–50kΩ) for VM-sense path biasing, eliminates external timing capacitors via on-chip fixed-delay circuitry (±20% accuracy), and supports overvoltage charger detection at 8.0V (±2V) with immediate CO shutdown-no delay applied.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - sets precise upper cell voltage limit before CO disables charge FET |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers DO shutdown to prevent deep discharge damage to Li+ cell |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via sense resistor voltage drop at VM pin |
| Active Current Consumption | 3.0µA typ @ +25°C - enables multi-year runtime in always-on battery pack monitoring |
| VDD–VM Absolute Max Rating | 30V - allows direct integration with high-voltage chargers or transient-prone systems |
| 0V Battery Charge Function | Enabled - permits safe reactivation of fully depleted cells without manual intervention |
| Package | SOT25 - 5-pin surface-mount package with 1.6mm × 2.9mm footprint for high-density PCB layout |
Pinout & Package
SOT25 package: 5-pin, small-outline transistor outline with exposed thermal pad (not electrically connected); pin 1 marked; RoHS-compliant, halogen-free, lead-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VM | Charger negative input / current sense node | Monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short-circuit events |
| 2: VDD | Positive power supply input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO gate outputs |
| 3: VSS | Negative power supply reference | System ground reference; tied to battery negative; forms return path for all internal logic and sensing |
| 4: DO | Discharge FET gate control output | Drives high-side or low-side N-MOSFET to interrupt discharge path during overdischarge or overcurrent |
| 5: CO | Charge FET gate control output | Drives N-MOSFET to block charging during overcharge, overvoltage charger, or charge overcurrent conditions |
Key Features
| Feature | Design Value |
|---|---|
| Fixed-time protection delay | No external capacitor required - reduces BOM count and board area while maintaining ±20% timing accuracy |
| Selectable power-down mode | Reduces quiescent current to 0.01µA typ - extends shelf life of sealed battery packs awaiting deployment |
| 0V battery charge enable | Allows recovery of deeply discharged cells without external wake-up circuitry or manual reset |
| Overvoltage charger detection | 8.0V ±2V threshold with instantaneous CO shutdown - protects against faulty or mismatched chargers |
| High-accuracy voltage references | ±25mV overcharge detection tolerance - ensures consistent cell voltage control across temperature and unit variance |
Applications
| Smart Wearables | Power Banks |
|---|---|
|
Use Scenario: Compact Li+ battery pack powering Bluetooth earbuds with tight thermal and size constraints. IC Role / Device Role / Timing Role: Primary protection controller managing charge/discharge sequencing, overcurrent cutoff, and 0V recovery. Use Value: Enables ultra-low standby current (3.0µA) and eliminates need for external timing components - critical for sub-10cm³ form factors. |
Use Scenario: Dual-cell (1S2P) portable charger with USB-C PD input and multiple output ports. IC Role / Device Role / Timing Role: Per-cell protection unit ensuring individual cell voltage stays within 2.500V–4.375V window during high-current charge/discharge cycles. Use Value: Prevents cascade failure via precise ±35mV overdischarge detection and 0.150V ±15mV discharge overcurrent sensing. |
| Medical Portable Monitors | Industrial Handheld Scanners |
|
Use Scenario: FDA-classified handheld pulse oximeter with sealed Li+ battery requiring long shelf life and field reliability. IC Role / Device Role / Timing Role: Safety-critical protection layer enforcing IEC 62133 compliance through accurate voltage thresholds and overvoltage charger blocking. Use Value: 30V VDD–VM rating withstands ESD transients; 0.01µA power-down mode preserves battery capacity during 2-year shelf storage. |
Use Scenario: Ruggedized barcode scanner used in warehouse environments with frequent drop/impact exposure. IC Role / Device Role / Timing Role: Fault-tolerant protector detecting short-circuit events (<1µs response) and enabling automatic recovery after load removal. Use Value: Load short-circuit detection at 0.700V ±100mV with sub-microsecond delay prevents MOSFET destruction during accidental probe shorts. |
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 |
|---|---|---|---|
| Seiko Instruments S-8261AAB-M6T1U | Fixed 4.25V overcharge threshold; no 0V charge function; requires external timing capacitor | Lacks auto-recovery from deep discharge; less suitable for sealed or maintenance-free packs | Choose when cost sensitivity outweighs feature flexibility and design simplicity |
| Ricoh RP505K001B-TR-F | Higher 5.5µA operating current; ±50mV overcharge accuracy; supports 2-cell configuration | Better suited for multi-cell stacks but consumes >1.8× more active current than AP9101CAK-CDTRG1 | Prefer for 2S battery systems where shared protection IC reduces component count |
Compared with S-8261AAB-M6T1U and RP505K001B-TR-F, the AP9101CAK-CDTRG1 offers superior voltage accuracy (±25mV vs. ±50mV), lower active current (3.0µA vs. ≥5.5µA), and unique 0V charge capability-making it optimal for compact, long-shelf-life, single-cell Li+ applications demanding minimal external components.
Availability
AP9101CAK-CDTRG1 is available at Aetrix Electronics and suitable for smart wearables, medical portable monitors, power banks, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.
Supply support for AP9101CAK-CDTRG1 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 devices, with manufacturing certified to IATF 16949 and product definitions aligned to AEC-Q200 for automotive-grade reliability.
The AP9101C belongs to Diodes' battery protection IC product line, engineered specifically for high-precision, low-power, single-cell Li+ battery pack safety-emphasizing accuracy, integration, and qualification for consumer, medical, and industrial end equipment.
FAQ
What is the function of the VM pin on the AP9101CAK-CDTRG1?
The VM pin serves as the current-sense input node for both charge and discharge overcurrent detection. It monitors the voltage drop across an external sense resistor placed between the battery's P− terminal and system ground. When this voltage exceeds configured thresholds (e.g., 0.150V for discharge overcurrent), the IC asserts DO or CO to disable the respective FET. Internal resistors RVMD and RVMS connect dynamically during fault states to bias VM for reliable detection.
Does the AP9101CAK-CDTRG1 support automatic recovery from overdischarge without a charger?
No-the AP9101CAK-CDTRG1 variant includes selectable power-down mode, meaning recovery from overdischarge requires charger connection to raise battery voltage above VDU (2.900V). Unlike the auto-wake-up AP9101CA series, this part does not monitor open-circuit voltage autonomously in sleep state and lacks tDLR-based release logic without external stimulus.
Can the AP9101CAK-CDTRG1 be used in 2-cell battery configurations?
No-it is designed exclusively for 1-cell Li+ or Li-polymer batteries with maximum VDD–VSS operating range of 1.5V to 5.5V. Its overcharge detection threshold (4.375V) and overvoltage charger detection (8.0V) are calibrated for single-cell voltage profiles. Using it in 2S configurations risks undervoltage lockout or false overcharge triggering due to doubled cell voltage.
How does the 0V battery charge function operate in practice?
When enabled (factory-set in AP9101CAK-CDTRG1), the 0V charge function allows the charger to initiate current flow into a fully depleted cell (0V nominal) by temporarily overriding the overdischarge lockout. The IC detects charger presence via VM pin voltage rise and enables DO output once VDD reaches ≥1.2V, permitting controlled recharge without manual reset or external wake-up circuitry.
AP9101CAK-CDTRG1 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-CDTRG1 FAQ
1.How can I place an order for AP9101CAK-CDTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-CDTRG1 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-CDTRG1 reliable?
The price and inventory of AP9101CAK-CDTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-CDTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-CDTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-CDTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-CDTRG1?
AP9101CAK-CDTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-CDTRG1 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-CDTRG1?
For technical support, including AP9101CAK-CDTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-CDTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-CDTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-CDTRG1 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-CDTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-CDTRG1?
All AP9101CAK-CDTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-CDTRG1, 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-CDTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-CDTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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