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Diodes Incorporated AP9101CK-ALTRG1
- Part No.:
- AP9101CK-ALTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CK-ALTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:4,470
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Product details
Overview
AP9101CK-ALTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.275V ±25mV, overdischarge detection at 2.300V ±35mV, discharge overcurrent detection at 0.180V ±15mV, and integrated fixed-delay timing circuits eliminating external capacitors. It controls external N-channel MOSFETs via DO (discharge gate) and CO (charge gate) pins in portable power tools, Bluetooth headsets, and medical wearables.
For engineers reviewing the AP9101CK-ALTRG1 datasheet, AP9101CK-ALTRG1 pinout, AP9101CK-ALTRG1 application, or AP9101CK-ALTRG1 equivalent, this device supports precise voltage monitoring across temperature (−40°C to +85°C), selectable 0V charge function, and high-voltage VM–VDD tolerance up to 30V - critical for robust battery pack safety design.
Technical Context
The AP9101CK-ALTRG1 implements independent analog comparators with precision reference circuitry to monitor VDD–VSS (cell voltage) and VM–VSS (current-sense voltage), triggering latch-based protection states with fixed delay timers (e.g., tCU = 1.0s typ, tDOC = 12ms typ). Its logic circuit enforces auto-release behavior after overcharge and overdischarge events when thresholds are re-satisfied.
It uses high-voltage CMOS process technology enabling 30V differential rating between VM and VDD pins, supports both power-down mode (0.1µA standby) and auto-wake-up variants, and integrates internal pull-up/pull-down resistors (RVMD = 300kΩ typ, RVMS = 30kΩ typ) for VM pin biasing during fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.275V ±25mV - sets precise upper cell voltage limit before disabling charge path |
| Overdischarge Detection Voltage | 2.300V ±35mV - prevents deep discharge damage to Li+ cell anode structure |
| Discharge Overcurrent Threshold | 0.180V ±15mV - detects >1.8A fault current with 100mΩ sense resistor |
| VM–VDD Absolute Max Rating | 30V - enables direct connection to high-side charger inputs without level-shifting |
| Operating Current (Typ) | 3.0µA at 3.5V - extends protection circuit lifetime in always-on battery packs |
| Power-Down Current (Typ) | 0.1µA - reduces self-discharge during long-term storage of unused packs |
| 0V Battery Charge Function | Enabled - allows safe recharge of fully depleted cells without manual reset |
| Overvoltage Charger Detection | 8.0V ±2V - protects against faulty chargers delivering excessive input voltage |
Pinout & Package
AP9101CK-ALTRG1 is housed in a SOT25 (5-pin) surface-mount package with exposed pad for thermal performance and standard JEDEC footprint compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM (Pin 1) | Current-sense input | Monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short-circuit events |
| VDD (Pin 2) | Positive supply input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO outputs |
| VSS (Pin 3) | Ground reference | System ground return; serves as reference for all voltage comparators and output drivers |
| DO (Pin 4) | Discharge control output | Drives gate of external N-MOSFET in discharge path; low = disable discharge |
| CO (Pin 5) | Charge control output | Drives gate of external N-MOSFET in charge path; low = disable charging |
Key Features
| Feature | Design Value |
|---|---|
| Fixed-time protection delay circuitry | Eliminates need for external timing capacitors - reduces BOM count and PCB area |
| High-accuracy voltage detection | ±25mV overcharge threshold tolerance ensures consistent cell voltage clamping across temperature |
| Selectably enabled 0V battery charge | Permits recovery of deeply discharged cells without external intervention or manual reset |
| 30V VM–VDD differential rating | Supports direct integration with high-voltage charger interfaces without external protection diodes |
| Auto-release overcharge/overdischarge mode | Automatically restores charge/discharge paths when cell voltage returns within safe window - no host MCU required |
Applications
| Power Tools | Wireless Headsets |
|---|---|
Use Scenario: Cordless drill battery pack with 1-cell Li+ configuration subject to high pulse discharge currents and mechanical shock-induced voltage transients. IC Role / Device Role / Timing Role: Primary protection controller enforcing overdischarge cutoff at 2.300V and discharge overcurrent limit at 0.180V with 12ms response latency. Use Value: Prevents irreversible capacity loss from deep discharge and avoids MOSFET thermal runaway during stall-current events. | Use Scenario: Compact Bluetooth earbud battery module requiring ultra-low quiescent current and reliable 0V recovery after extended shelf storage. IC Role / Device Role / Timing Role: Standalone safety supervisor managing charge enable/disable via CO pin and supporting factory-enabled 0V charge function. Use Value: Enables full functional recovery from zero-voltage state without user service intervention or firmware reset. |
| Medical Wearables | Smart Pens |
Use Scenario: FDA-regulated glucose monitor with sealed 1-cell Li+ battery, operating continuously for 7+ days per charge under strict leakage current limits. IC Role / Device Role / Timing Role: Low-power protection IC consuming only 3.0µA in operation and 0.1µA in power-down mode to maximize runtime. Use Value: Extends usable battery life by minimizing protection circuit parasitic drain while maintaining full safety coverage. | Use Scenario: Digitally enabled stylus pen using thin-profile 1-cell Li+ battery with frequent partial charge cycles and risk of reverse-polarity connection. IC Role / Device Role / Timing Role: Dual-path gate driver (CO/DO) with built-in VM–VSS short-circuit detection at 0.700V and ±100mV accuracy. Use Value: Detects and isolates short faults within 1.2µs typical delay - preventing catastrophic thermal failure during accidental tip contact. |
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-8261AAL-M6T1U | Fixed 4.250V overcharge threshold; no overvoltage charger detection; 1.5µA operating current | Lacks 30V VM–VDD rating and 0V charge function; suited for cost-sensitive consumer electronics only | Select when absolute lowest quiescent current is prioritized over charger fault protection and deep-discharge recovery |
| Ricoh RP502K001B-TR-F | Programmable overcharge voltage (4.00–4.45V); includes temperature monitoring; 5.0µA operating current | Requires external thermistor and configuration resistors; higher system-level component count | Choose when adaptive protection thresholds and thermal derating are required for high-reliability industrial packs |
Compared with S-8261AAL-M6T1U and RP502K001B-TR-F, the AP9101CK-ALTRG1 delivers superior integration (no external timing caps), broader voltage fault coverage (8.0V overvoltage charger detection), and guaranteed 0V recovery - making it optimal for compact, high-safety 1-cell Li+ systems where BOM minimization and field reliability are critical.
Availability
AP9101CK-ALTRG1 is available at Aetrix Electronics and suitable for power tools, wireless headsets, medical wearables, and smart pens requiring stable component supply, long-lifecycle support, and RoHS-compliant green manufacturing.
Supply support for AP9101CK-ALTRG1 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 devices, with operations certified to IATF 16949 and product lines qualified to AEC-Q100/101 standards.
The AP9101C series belongs to Diodes' battery protection IC product line, engineered specifically for high-precision, low-power, single-cell Li+ pack safety - emphasizing voltage accuracy, minimal external components, and automotive-grade reliability.
FAQ
What is the function of the VM pin on the AP9101CK-ALTRG1?
The VM pin serves as the current-sense input referenced to VSS, detecting voltage drops across an external sense resistor to identify discharge overcurrent, charge overcurrent, and short-circuit conditions. It also enables internal resistor switching (RVMD/RVMS) during fault states to stabilize sensing and support auto-release behavior without host intervention.
Does the AP9101CK-ALTRG1 support overvoltage protection for the charger input?
Yes - it monitors the voltage between VDD and VM pins and triggers overvoltage charger protection at 8.0V (±2V), immediately pulling CO low to disable the charge MOSFET. Release occurs at 7.3V (±2V) with no intentional delay, providing fast-response safeguard against defective or mismatched chargers.
How does the 0V battery charge function operate in the AP9101CK-ALTRG1?
This function is factory-configured and enabled in the ALTRG1 variant. When the battery voltage reaches 0V due to self-discharge, the IC permits the charger to initiate trickle charge once the charger voltage exceeds 1.2V, bypassing normal under-voltage lockout - enabling full recovery without manual reset or external circuitry.
Can the AP9101CK-ALTRG1 be used in automotive applications?
While the AP9101CK-ALTRG1 meets AEC-Q100 stress test requirements and is manufactured in IATF 16949-certified facilities, formal AEC-Q100 qualification requires specific change control and PPAP documentation. Customers targeting automotive use must contact Diodes Incorporated directly to obtain qualified part numbers and compliance evidence.
AP9101CK-ALTRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-ALTRG1 FAQ
1.How can I place an order for AP9101CK-ALTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CK-ALTRG1 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-ALTRG1 reliable?
The price and inventory of AP9101CK-ALTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CK-ALTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CK-ALTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CK-ALTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CK-ALTRG1?
AP9101CK-ALTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CK-ALTRG1 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-ALTRG1?
For technical support, including AP9101CK-ALTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CK-ALTRG1 requirements.
6.How does Aetrix verify that AP9101CK-ALTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CK-ALTRG1 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-ALTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CK-ALTRG1?
All AP9101CK-ALTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CK-ALTRG1, 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-ALTRG1 part is unused and in its original packaging.
Return procedure for AP9101CK-ALTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP9101CK-ALTRG1 Tags
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