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Diodes Incorporated AP9101CAK-AOTRG1
- Part No.:
- AP9101CAK-AOTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-AOTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,861
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Product details
Overview
AP9101CAK-AOTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.425V ±25mV, overdischarge detection at 2.500V ±35mV, discharge overcurrent detection at 0.064V ±15mV, and integrated fixed-delay timing with no external capacitor required. It controls external N-channel MOSFETs via dedicated CO and DO pins and supports 0V battery charging and selectable power-down mode.
For engineers reviewing the AP9101CAK-AOTRG1 datasheet, AP9101CAK-AOTRG1 pinout, AP9101CAK-AOTRG1 application, or AP9101CAK-AOTRG1 equivalent, this device is selected for high-accuracy, low-quiescent-current battery safety in portable medical devices, power tools, and USB-C PD battery packs where precise voltage thresholds and fast short-circuit response (≤1.4µs) are critical.
Technical Context
The AP9101CAK-AOTRG1 implements independent analog comparators for six protection conditions-overcharge, overdischarge, charge/discharge overcurrent, short circuit, and overvoltage charger-with fixed internal delay timers (tCU, tDL, tDOC, tSHORT, tCOC) accurate to ±20% at +25°C and ±40% over -40°C to +85°C. Its logic circuit uses high-voltage CMOS process enabling 30V VDD-to-VM tolerance.
It features dual-mode operation: selectable power-down mode (0.1µA standby) or auto-wake-up mode, and factory-configured 0V battery charge enablement. The VM pin serves as bidirectional current-sense input with internal RVMD (300kΩ typ) and RVMS (30kΩ typ) resistors for status monitoring without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.425V ±25mV - triggers CO pin low after 0.8–1.4ms delay to halt charging before cell damage |
| Overdischarge Detection Voltage | 2.500V ±35mV - asserts DO pin low after 0.6–1.4ms delay to prevent deep discharge degradation |
| Discharge Overcurrent Threshold | 0.064V ±15mV - detects >6.4A (with 10mΩ sense resistor) and disables discharge path within ≤1.4ms |
| Short-Circuit Detection Voltage | 0.450V ±100mV - responds to ≥45A fault (10mΩ Rsense) in ≤1.4µs to prevent thermal runaway |
| Operating Current (Typ) | 3.0µA at VDD=3.5V - enables multi-year runtime on backup battery or low-power IoT nodes |
| VDD–VM Absolute Max | 30V - supports direct connection to 24V chargers without level-shifting or clamping diodes |
| 0V Battery Charge Enable | Factory-configured - allows safe reactivation of fully depleted cells using standard CC/CV chargers |
Pinout & Package
AP9101CAK-AOTRG1 is packaged in SOT26 (6-pin), with Pin 1 marked and NC (no connect) terminal present. The package supports reflow soldering per JEDEC J-STD-020 and is RoHS-compliant, halogen-free, and green-certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current-sense and charger monitor input | Bidirectional sensing node for discharge/charge current and charger voltage (VDD–VM); internal RVMD/RVMS resistors eliminate external bias networks |
| VDD | Positive supply input | Connects to battery anode; powers internal circuitry and drives CO/DO gate outputs; rated up to 12V |
| VSS | Negative supply reference | System ground return; referenced by all voltage comparators and logic; must be low-impedance |
| DO | Discharge control output | Drives gate of external N-MOSFET in discharge path; high = ON, low = OFF; 5kΩ typical pull-down resistance |
| CO | Charge control output | Drives gate of external N-MOSFET in charge path; high = ON, low = OFF; 6kΩ typical pull-down resistance |
| NC | No-connect terminal | Unused pin; must remain unconnected per datasheet; not internally bonded or functional |
Key Features
| Feature | Design Value |
|---|---|
| Fixed-time protection delay | Eliminates need for external timing capacitors-reduces BOM count and PCB area in space-constrained battery modules |
| 0V battery charge function | Enables recovery of deeply discharged Li+ cells without requiring special pre-charge circuits or firmware intervention |
| Selectably enabled power-down mode | Reduces quiescent current to 0.1µA during storage or transport, extending shelf life without compromising wake-up reliability |
| Integrated VM bias network | RVMD = 300kΩ and RRVMS = 30kΩ allow automatic transition between overdischarge, short-circuit, and normal states without external resistors |
| Overvoltage charger detection | Monitors VDD–VM directly at 8.0V threshold (±2V) to disable charging if adapter exceeds safe limits-no external Zener needed |
Applications
| Power Tool Battery Packs | Portable Medical Monitors |
|---|---|
Use Scenario: Cordless drill/driver battery packs subject to high pulse currents (>30A) and mechanical shock-induced shorts. IC Role / Device Role / Timing Role: Primary protection controller detecting overcurrent (0.064V threshold) and short-circuit (0.45V) within ≤1.4µs to prevent MOSFET failure. Use Value: Prevents thermal runaway during stall events while maintaining <3µA self-discharge during idle periods between jobs. |
Use Scenario: Single-cell Li+ powered ECG or pulse oximeter with strict 10-year shelf-life requirement and zero maintenance. IC Role / Device Role / Timing Role: Standby-mode protector enabling 0.1µA power-down state and automatic wake-up upon charger attachment or voltage recovery. Use Value: Extends unused battery life by >4× versus non-power-down alternatives, reducing field replacement costs. |
| USB-C PD Power Banks | Smart Wearable Chargers |
Use Scenario: Dual-role USB-C PD power bank supporting both sink and source modes with shared battery and variable input voltage. IC Role / Device Role / Timing Role: Bidirectional protection element monitoring VDD–VM for overvoltage charger events (8.0V clamp) and reverse-current blocking. Use Value: Eliminates need for separate OVP IC and discrete sense-resistor biasing, cutting solution cost by $0.12/BOM. |
Use Scenario: Compact wireless charging case for earbuds with tight height constraint (<6mm) and 0V recovery requirement. IC Role / Device Role / Timing Role: Space-optimized protection IC in SOT26 delivering full 6-function safety in 2.9mm × 2.8mm footprint. Use Value: Enables direct integration into ultra-thin molded plastic housings without thermal derating or layout compromises. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Seiko Instruments S-8261ACNMC-G3JT2U | Fixed 4.25V overcharge threshold; no 0V charge support; requires external timing cap; 5-pin SOT23 | Lacks auto-wake-up and 0V recovery; suited only for cost-sensitive consumer electronics with predictable usage cycles | Choose only if design tolerates fixed thresholds and accepts added BOM complexity for timing components |
| Ricoh RP507K001B-TR-F | Supports 2-cell configuration; higher 4.5V OCV threshold; 0.5µA operating current; 6-pin WLCSP | Designed for stacked-cell systems; unsuitable for 1-cell due to undervoltage lockout behavior below 3.0V | Select only when scaling to multi-cell topology or requiring wafer-level packaging for ultra-dense layouts |
Compared with S-8261ACNMC-G3JT2U and RP507K001B-TR-F, AP9101CAK-AOTRG1 uniquely combines factory-programmed 0V charge enablement, SOT26 compactness, and 0.064V ultra-low overcurrent threshold-making it optimal for high-reliability 1-cell applications demanding both precision and recoverability.
Availability
AP9101CAK-AOTRG1 is available at Aetrix Electronics and suitable for power tool battery packs, portable medical monitors, USB-C PD power banks, and smart wearable chargers requiring stable component supply across extended production lifecycles.
Supply support for AP9101CAK-AOTRG1 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 manufacturer specializing in discrete, analog, and mixed-signal solutions, with ISO/TS 16949-certified manufacturing and broad distribution infrastructure.
The AP9101C series belongs to Diodes' battery protection IC product line, engineered specifically for high-accuracy, low-power, single-cell Li+ safety in portable and industrial energy storage systems.
FAQ
What is the function of the NC pin on AP9101CAK-AOTRG1?
The NC (No Connect) pin is physically present in the SOT26 package but is not electrically bonded or functional. It must remain unconnected in PCB layout per the datasheet. This pin exists for mechanical symmetry and package compatibility-not for signal routing, grounding, or thermal relief.
Does AP9101CAK-AOTRG1 support automatic recovery from overdischarge without a charger?
Yes-AP9101CAK-AOTRG1 is configured with auto-wake-up mode (denoted by "A" in part number suffix), enabling recovery when battery voltage rises above 2.900V (VDU) and remains there for the overdischarge release delay time, even without external charger connection.
How does the VM pin operate during short-circuit detection?
During short-circuit events, the VM pin voltage rises to ≥0.450V relative to VSS. The internal comparator triggers DO pin low within ≤1.4µs, and RVMS connects VM to VSS-pulling VM near ground once load is removed, allowing automatic recovery without manual reset.
Can AP9101CAK-AOTRG1 be used with a 10mΩ current-sense resistor?
Yes-using a 10mΩ sense resistor, the 0.064V discharge overcurrent threshold corresponds to 6.4A, and the 0.450V short-circuit threshold corresponds to 45A. These values align with typical power tool and medical device peak current requirements and are validated across -40°C to +85°C.
AP9101CAK-AOTRG1 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-AOTRG1 FAQ
1.How can I place an order for AP9101CAK-AOTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-AOTRG1 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-AOTRG1 reliable?
The price and inventory of AP9101CAK-AOTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-AOTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-AOTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-AOTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-AOTRG1?
AP9101CAK-AOTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-AOTRG1 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-AOTRG1?
For technical support, including AP9101CAK-AOTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-AOTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-AOTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-AOTRG1 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-AOTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-AOTRG1?
All AP9101CAK-AOTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-AOTRG1, 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-AOTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-AOTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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