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Diodes Incorporated AP9101CK-ATTRG1
- Part No.:
- AP9101CK-ATTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CK-ATTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,482
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Product details
Overview
AP9101CK-ATTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.400V ±25mV, overdischarge detection at 2.800V ±35mV, discharge overcurrent detection at 0.150V ±15mV, and integrated 0V battery charge enablement. It drives external N-channel MOSFETs via dedicated CO and DO pins to control charge/discharge paths in portable power tools and Bluetooth headsets.
For engineers reviewing the AP9101CK-ATTRG1 datasheet, AP9101CK-ATTRG1 pinout, AP9101CK-ATTRG1 application, or AP9101CK-ATTRG1 equivalent, this page delivers verified voltage thresholds, fixed-time delay accuracy (±20%), SOT25 package dimensions, CO/DO gate drive capability, and factory-configured auto-release overcharge mode with selectable power-down function.
Technical Context
The AP9101CK-ATTRG1 implements independent analog comparators for VDD–VSS (cell voltage), VM–VSS (current-sense), and VDD–VM (charger overvoltage), each feeding into logic-controlled delay timers. Its internal level-shifting circuitry enables high-side sensing of up to 30V between VDD and VM pins while operating from 1.5V to 5.5V supply.
It integrates fixed detection delays-tCU = 1.0s (overcharge), tDL = 100ms (overdischarge), tDOC = 12ms (discharge overcurrent), tSHORT = 400µs (short-circuit)-with ±20% accuracy at +25°C and ±40% across –40°C to +85°C. The device supports both power-down mode (0.1µA standby) and auto-wake-up operation without external capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.400V ±25mV - triggers CO pin low after 1.0s delay to disable charging when cell exceeds safe voltage |
| Overdischarge Detection Voltage | 2.800V ±35mV - asserts DO pin low after 100ms delay to halt discharge before deep depletion |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via VM–VSS drop and disables discharge path |
| 0V Battery Charge Enable | Factory-enabled - allows charger to initiate recovery of fully depleted cells down to 0V |
| Supply Current (Operation) | 3.0µA typical at +25°C - enables multi-year runtime in always-on battery management systems |
| VDD–VM Absolute Max | 30V - supports high-voltage chargers and reverse-polarity transient tolerance |
| Package | SOT25 - 2.9mm × 1.6mm × 1.1mm footprint compatible with automated PCB assembly |
Pinout & Package
SOT25 package: 5-pin, surface-mount, lead-free, RoHS-compliant plastic package with exposed thermal pad (not electrically connected). Pin 1 marked by dot or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current-sense input | Monitors voltage drop across external sense resistor (R2) 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 detectors |
| VSS | Negative supply ground | System ground reference for VDD, VM, CO, and DO; forms return path for protection logic |
| DO | Discharge control output | Drives gate of external N-MOSFET in discharge path; high = ON, low = OFF during overdischarge or overcurrent |
| CO | Charge control output | Drives gate of external N-MOSFET in charge path; high = ON, low = OFF during overcharge, overvoltage charger, or charge overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Fixed-time detection delays | No external capacitors required - reduces BOM count and layout area for compact battery packs |
| High-accuracy voltage thresholds | ±25mV overcharge detection tolerance - ensures precise cell voltage control within JEITA limits |
| 0V battery charge support | Enables full recovery of self-discharged Li+ cells without manual pre-charge circuitry |
| Power-down mode selection | 0.1µA standby current - extends shelf life of sealed battery modules during storage |
| Charger overvoltage protection | 8.0V detection / 7.3V release - safeguards against faulty or mismatched chargers without delay |
Applications
| Power Tools | Wireless Headsets |
|---|---|
|
Use Scenario: Cordless drill battery pack subjected to high-current bursts and thermal cycling during repeated use. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage, discharge current, and charger overvoltage; executes 100ms overdischarge cutoff and 400µs short-circuit shutdown. Use Value: Prevents thermal runaway during motor stall events and enables safe recharging of deeply discharged cells after field use. |
Use Scenario: Compact Bluetooth earbud battery exposed to frequent partial charges and micro-short risks from sweat ingress. IC Role / Device Role / Timing Role: Dual-path MOSFET controller enforcing 2.800V overdischarge threshold and 0.150V discharge overcurrent limit with auto-release behavior. Use Value: Extends usable cycle count by avoiding permanent capacity loss from sub-2.5V discharge while enabling rapid recovery from accidental deep discharge. |
| Medical Wearables | Smart Locks |
|
Use Scenario: FDA-regulated glucose monitor with sealed Li+ cell requiring fail-safe discharge cutoff and zero-volt recharge capability. IC Role / Device Role / Timing Role: Safety-critical voltage supervisor using ±35mV overdischarge accuracy and factory-enabled 0V charge function. Use Value: Guarantees device operability after long-term storage and eliminates need for service-center battery replacement due to self-discharge. |
Use Scenario: Battery-powered smart door lock deployed in outdoor environments with wide temperature swings and infrequent charging cycles. IC Role / Device Role / Timing Role: Low-power protector delivering 3.0µA operational current and ±20% delay timing stability from –40°C to +85°C. Use Value: Achieves >5-year battery life in standby while maintaining reliable overvoltage charger response even after seasonal voltage drift. |
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 |
|---|---|---|---|
| R5460K001C-TR | Fixed 4.25V overcharge threshold; no 0V charge enable; SOT23-6 package | Lacks configurable thresholds and 0V recovery - suitable only for cost-sensitive, non-recoverable consumer packs | Select only if design requires strict 4.25V cutoff and accepts inability to revive 0V cells |
| BD14000FVJ-CE2 | Integrated charge/discharge MOSFETs; higher 5.5µA operating current; 2.7V overdischarge threshold | Eliminates external FETs but increases thermal load; less aggressive low-voltage cutoff than AP9101CK-ATTRG1's 2.800V | Choose when board space is critical and 2.7V overdischarge tolerance is acceptable for primary cells |
Compared with R5460K001C-TR and BD14000FVJ-CE2, the AP9101CK-ATTRG1 uniquely combines factory-programmed 4.400V/2.800V thresholds, 0V charge enablement, and ultra-low 3.0µA operation in SOT25-making it optimal for high-reliability, field-recoverable 1-cell Li+ systems where precision and longevity are prioritized over integration density.
Availability
AP9101CK-ATTRG1 is available at Aetrix Electronics and suitable for power tools, wireless headsets, medical wearables, and smart locks requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for AP9101CK-ATTRG1 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 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 high-accuracy, low-quiescent-current safety monitoring in single-cell lithium-ion and lithium-polymer battery packs.
FAQ
What is the function of the VM pin on the AP9101CK-ATTRG1?
The VM pin serves as the current-sense input that monitors the voltage difference between the battery's P– node and system ground. It directly measures the voltage drop across an external sense resistor (R2) to detect discharge overcurrent, charge overcurrent, and short-circuit conditions. Its internal RVMS and RVMD resistors enable automatic state-dependent biasing during protection events, eliminating need for external pull-up/down networks.
Does the AP9101CK-ATTRG1 support automatic recovery from overdischarge?
Yes-the AP9101CK-ATTRG1 uses auto-release overcharge protection mode and supports overdischarge recovery via either charger connection or battery voltage rise above the 3.000V overdischarge release threshold (VDU). When 0V battery charge is enabled, it also permits recovery from true 0V states upon charger application, making it suitable for sealed devices with no user-serviceable battery access.
How does the AP9101CK-ATTRG1 handle charger overvoltage events?
The AP9101CK-ATTRG1 continuously monitors the voltage between VDD and VM pins. If this exceeds the fixed 8.0V overvoltage charger detection threshold, it immediately pulls the CO pin low to disable the charge MOSFET-no delay timer applies. Recovery occurs when the VDD–VM voltage falls below the 7.3V release threshold, restoring charge path functionality without hysteresis or timing constraints.
Can the AP9101CK-ATTRG1 be used with lithium iron phosphate (LiFePO₄) cells?
No-the AP9101CK-ATTRG1 is configured for lithium-ion/lithium-polymer chemistry with a 4.400V overcharge threshold and 2.800V overdischarge threshold, which do not align with LiFePO₄'s 3.65V max charge and 2.0V–2.5V discharge range. Using it with LiFePO₄ would result in premature overcharge cutoff or insufficient overdischarge protection; a dedicated LiFePO₄ protector like the AP9211 series is required.
AP9101CK-ATTRG1 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-ATTRG1 FAQ
1.How can I place an order for AP9101CK-ATTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CK-ATTRG1 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-ATTRG1 reliable?
The price and inventory of AP9101CK-ATTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CK-ATTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CK-ATTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CK-ATTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CK-ATTRG1?
AP9101CK-ATTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CK-ATTRG1 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-ATTRG1?
For technical support, including AP9101CK-ATTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CK-ATTRG1 requirements.
6.How does Aetrix verify that AP9101CK-ATTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CK-ATTRG1 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-ATTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CK-ATTRG1?
All AP9101CK-ATTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CK-ATTRG1, 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-ATTRG1 part is unused and in its original packaging.
Return procedure for AP9101CK-ATTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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