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Diodes Incorporated AP9101CAK-AITRG1
- Part No.:
- AP9101CAK-AITRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-AITRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,021
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Product details
Overview
AP9101CAK-AITRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.500V ±25mV, overdischarge detection at 2.400V ±35mV, discharge overcurrent detection at 0.150V ±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-AITRG1 datasheet, AP9101CAK-AITRG1 pinout, AP9101CAK-AITRG1 application, or AP9101CAK-AITRG1 equivalent, this device is selected for precision voltage monitoring, low-quiescent-current battery safety systems, and compact 1-cell Li+ pack designs requiring factory-configured protection thresholds and auto-release behavior.
Technical Context
The AP9101CAK-AITRG1 integrates high-accuracy comparators for six independent fault conditions-overcharge (VCU = 4.500V), overdischarge (VDL = 2.400V), discharge overcurrent (VDOC = 0.150V), short-circuit (VSHORT = 0.700V), charge overcurrent (VCOC = −0.075V), and overvoltage charger (VOVCHG = 8.0V)-each with defined hysteresis and ±20% delay tolerance. Its logic circuitry drives CO and DO outputs to control external FETs using internal level-shifting and VM-sense architecture.
It operates across −40°C to +85°C with supply voltage from 1.5V to 5.5V, supports selectable power-down mode (0.1µA typ), and features integrated VM–VDD (300kΩ typ) and VM–VSS (30kΩ typ) resistors for current sensing without external components. The device uses high-voltage CMOS process enabling up to 30V differential between VDD and VM pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.500V ±25mV - sets precise upper voltage limit before disabling charge path |
| Overdischarge Detection Voltage | 2.400V ±35mV - triggers discharge cutoff to prevent cell damage below safe threshold |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via sense resistor voltage drop |
| Quiescent Current (Operation) | 3.0µA typ at 3.5V - enables multi-year battery shelf life in always-connected protection circuits |
| VM–VSS Sense Resistance | 30kΩ typ - provides internal current-sensing path for discharge monitoring without external Rsense |
| CO/DO Output Drive | 6kΩ typ "H" / 4kΩ typ "L" - directly interfaces with standard N-MOSFET gates without buffer stages |
| Operating Temperature Range | −40°C to +85°C - qualified for consumer, industrial, and portable medical battery applications |
Pinout & Package
AP9101CAK-AITRG1 is packaged in SOT25 (5-pin) with lead-free, RoHS-compliant construction. Pin 1 is marked; device orientation follows standard top-view labeling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current Sense Input | Monitors voltage drop across external sense resistor during charge/discharge; referenced to VSS |
| VDD | Positive Supply Input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO outputs |
| VSS | Negative Supply Reference | System ground reference for all internal comparators and logic; tied to battery negative |
| DO | Discharge Control Output | Drives gate of discharge-side N-MOSFET; pulled low to disable discharge path on fault |
| CO | Charge Control Output | Drives gate of charge-side N-MOSFET; pulled low to disable charge path on fault |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Programmed Protection Thresholds | Fixed VCU=4.500V, VDL=2.400V, VDOC=0.150V, VSHORT=0.700V, VCOC=−0.075V - eliminates external resistor trimming and calibration effort |
| Built-in Fixed Delay Timing | No external capacitor required for tCU/tDL/tDOC - reduces BOM count and PCB area in space-constrained battery modules |
| 0V Battery Charge Enable | Permits recharging deeply discharged cells down to 0V - avoids permanent capacity loss due to self-discharge |
| Selectable Power-Down Mode | 0.1µA standby current with wake-up only on charger connection - extends shelf life of pre-packaged battery assemblies |
| Integrated VM Path Resistors | RVMS=30kΩ, RRVMD=300kΩ - enables current sensing and overvoltage detection without discrete bias networks |
Applications
| Power Tool Battery Packs | Wireless Headphone Charging Cases |
|---|---|
|
Use Scenario: Rechargeable 1-cell Li+ pack powering cordless drills with high pulse discharge currents up to 20A. IC Role / Device Role / Timing Role: Primary protection controller detecting overdischarge (2.400V), discharge overcurrent (0.150V), and short-circuit (0.700V) within µs–ms windows. Use Value: Prevents thermal runaway during motor stall while maintaining <3µA quiescent draw during idle storage. |
Use Scenario: Compact 1-cell Li+ battery inside Bluetooth earbud charging case with frequent shallow cycling and long shelf periods. IC Role / Device Role / Timing Role: Dual-role protector enabling 0V charge recovery and ultra-low-power sleep mode (0.1µA) between user sessions. Use Value: Eliminates need for manual reset after deep discharge and extends case battery shelf life beyond 12 months. |
| Medical Wearable Sensors | Smart Home Remote Controls |
|
Use Scenario: Single-use or rechargeable 1-cell Li+ battery powering continuous glucose monitors with strict safety certification requirements. IC Role / Device Role / Timing Role: Safety-critical voltage and current monitor with ±25mV overcharge accuracy and auto-release behavior to avoid false lockout. Use Value: Meets IEC 62368-1 fault response timing and enables field-recoverable operation without service intervention. |
Use Scenario: Low-cost IR remote with replaceable 1-cell Li+ coin cell requiring robust overdischarge prevention during infrequent use. IC Role / Device Role / Timing Role: Minimal-footprint protector using internal VM–VSS resistor (30kΩ) to eliminate external sense resistor and reduce component count. Use Value: Cuts BOM cost by $0.015/unit and removes solder joint reliability risk associated with discrete current-sense elements. |
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 VCU=4.250V, VDL=2.500V; requires external capacitor for delay timing; no 0V charge support | Lacks factory-programmed 4.500V/2.400V thresholds and integrated 0V recovery - unsuitable for high-voltage Li+ chemistries or deeply discharged deployments | Choose only if legacy design mandates Seiko footprint compatibility and lower overcharge threshold is acceptable |
| Ricoh RP502K001B-TR-F | VCU=4.350V ±30mV; VDL=2.500V ±40mV; 0.5µA operation current; no overvoltage charger detection | Higher operating current and missing VOVCHG=8.0V protection - increases risk of charger-induced overvoltage failure in unregulated adapter environments | Select when ultra-low power dominates requirements and external overvoltage protection is implemented separately |
Compared with S-8261AAL-M6T1U and RP502K001B-TR-F, AP9101CAK-AITRG1 delivers tighter voltage accuracy (±25mV vs ±30–40mV), integrated overvoltage charger detection (8.0V), and guaranteed 0V battery recovery - making it optimal for next-generation 1-cell Li+ systems demanding both precision and resilience.
Availability
AP9101CAK-AITRG1 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headphone charging cases, medical wearable sensors, and smart home remote controls requiring stable component supply, consistent factory-programmed thresholds, and long-term lifecycle support.
Supply support for AP9101CAK-AITRG1 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 cost-sensitive, space-constrained 1-cell Li+ battery applications requiring factory-trimmed accuracy, minimal external components, and automotive-grade process robustness.
FAQ
What is the function of the VM pin on AP9101CAK-AITRG1?
The VM pin serves as the current-sense input referenced to VSS, measuring voltage drop across an external sense resistor during charge and discharge. Internally, it connects to RVMS (30kΩ typ) and RVMD (300kΩ typ) resistors that enable discharge overcurrent, short-circuit, and overvoltage charger detection without additional components. Its voltage range is −0.3V to VDD+0.3V per absolute maximum ratings.
Does AP9101CAK-AITRG1 support automatic recovery from overdischarge without a charger?
No - AP9101CAK-AITRG1 uses the "selectable" power-down mode (indicated by blank suffix in ordering code), meaning recovery from overdischarge requires charger connection to wake the IC. Unlike the AP9101CA auto-wake-up variant, this part does not autonomously exit overdischarge state when battery voltage rises above VDU (2.800V); charger presence is mandatory to restore normal operation.
Can AP9101CAK-AITRG1 be used with 2-cell Li+ batteries?
No - AP9101CAK-AITRG1 is specified for 1-cell Li+ applications only, with absolute maximum VDD–VSS rating of 12V and recommended operating supply voltage of 1.5V to 5.5V. Its protection thresholds (e.g., VCU=4.500V, VDL=2.400V) are calibrated for single-cell voltage ranges; using it on 2-cell stacks would result in premature overcharge cutoff or insufficient overdischarge protection.
How is the 0V battery charge function enabled on AP9101CAK-AITRG1?
The 0V battery charge function is factory-programmed and permanently enabled on AP9101CAK-AITRG1, as indicated by "Permission" in the Ordering Information table. When battery voltage is 0V, the IC permits charging current to flow once V0CHA ≥1.2V is detected at the charger input, allowing full recovery of self-discharged cells without manual intervention or external reset circuitry.
AP9101CAK-AITRG1 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-AITRG1 FAQ
1.How can I place an order for AP9101CAK-AITRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-AITRG1 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-AITRG1 reliable?
The price and inventory of AP9101CAK-AITRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-AITRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-AITRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-AITRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-AITRG1?
AP9101CAK-AITRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-AITRG1 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-AITRG1?
For technical support, including AP9101CAK-AITRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-AITRG1 requirements.
6.How does Aetrix verify that AP9101CAK-AITRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-AITRG1 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-AITRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-AITRG1?
All AP9101CAK-AITRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-AITRG1, 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-AITRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-AITRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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