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Diodes Incorporated AP9101CAK-CPTRG1
- Part No.:
- AP9101CAK-CPTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-CPTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:4,729
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Product details
Overview
AP9101CAK-CPTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.250V ±25mV, overdischarge detection at 2.400V ±35mV, discharge overcurrent detection at 0.150V ±15mV, and integrated 0V battery charge functionality. It operates with 3.0µA typical current consumption in active mode and supports SOT25 packaging for compact battery management systems in portable electronics.
For engineers reviewing the AP9101CAK-CPTRG1 datasheet, AP9101CAK-CPTRG1 pinout, AP9101CAK-CPTRG1 application, or AP9101CAK-CPTRG1 equivalent, this device delivers precise voltage and current threshold monitoring with fixed delay timing, selectable power-down mode, and high-voltage tolerance (30V between VDD and VM) - critical for reliable Li+ pack safety design.
Technical Context
The AP9101CAK-CPTRG1 implements independent analog comparators for overcharge (VCU = 4.250V), overdischarge (VDL = 2.400V), discharge overcurrent (VDOC = 0.150V), short-circuit (VSHORT = 0.700V), and charge overcurrent (VCOC = −0.150V), each with dedicated delay timers (tCU/tDL/tDOC/tSHORT/tCOC) and hysteresis control. Its logic circuit drives CO and DO gate outputs to control external N-channel MOSFETs in series configuration.
It integrates internal resistance networks (RVMD = 300kΩ typ, RVMS = 30kΩ typ) for VM-sense biasing, supports 0V battery charging via factory-set option, and includes an overvoltage charger detector (VOVCHG = 8.0V, VOVCHGR = 7.3V) with immediate response-no delay-between VDD and VM pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.250V ±25mV - sets precise upper cell voltage limit before disabling charge path |
| Overdischarge Detection Voltage | 2.400V ±35mV - triggers discharge cutoff to prevent deep discharge damage |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via sense resistor voltage drop |
| 0V Battery Charge Function | Enabled - allows safe reactivation of fully depleted cells using external charger |
| Operating Current (Active) | 3.0µA typ at VDD = 3.5V - enables multi-year runtime in always-on battery protection |
| VDD–VM Absolute Max | 30V - supports robust operation under transient charger overvoltage conditions |
| Package | SOT25 - 5-pin surface-mount package with 0.95mm pitch, footprint-compatible with standard pick-and-place |
Pinout & Package
SOT25 package: 5-pin, small-outline transistor, 2.9mm × 1.6mm × 1.1mm body, gull-wing leads, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VM | Charge/discharge current sense input | Monitors voltage drop across external sense resistor (R2) to detect overcurrent/short events |
| 2: VDD | Positive supply input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO outputs |
| 3: VSS | Negative supply reference | Ground return for all internal functions and comparator references |
| 4: DO | Discharge control output | Drives gate of discharge-side N-MOSFET; low = disable discharge path |
| 5: CO | Charge control output | Drives gate of charge-side N-MOSFET; low = disable charge path |
Key Features
| Feature | Design Value |
|---|---|
| Fixed-time protection delay circuitry | No external capacitors required - reduces BOM count and layout area vs. RC-timed alternatives |
| Selectable power-down mode | 0.01µA typ standby current - extends shelf life of sealed battery packs during storage |
| High-accuracy voltage thresholds | ±25mV overcharge detection tolerance - ensures compliance with Li+ cell voltage limits per JEITA |
| Integrated 0V charge enable | Factory-configured option - eliminates need for external wake-up circuitry in recovery scenarios |
| Overvoltage charger detection | 8.0V detection / 7.3V release - protects against faulty chargers without added components |
Applications
| Power Tool Battery Packs | Wireless Headphone Charging Cases |
|---|---|
|
Use Scenario: 1-cell Li+ pack powering cordless drill with peak 20A discharge pulses and intermittent charging cycles. IC Role / Device Role / Timing Role: Primary protection controller monitoring VDD–VSS voltage and VM–VSS sense differential to independently manage charge/discharge MOSFETs. Use Value: Prevents thermal runaway during high-current discharge by triggering DO cutoff within 14ms (tDOC typ) at 0.150V sense threshold. |
Use Scenario: Compact charging case housing 1-cell Li+ battery that must recharge earbuds after deep self-discharge to 0V. IC Role / Device Role / Timing Role: Enables safe zero-volt reactivation via built-in 0V charge function and maintains ultra-low quiescent current (<0.1µA) during storage. Use Value: Eliminates need for external wake-up circuitry while ensuring full functional recovery from 0V state without user intervention. |
| Medical Wearable Sensors | Bluetooth Trackers |
|
Use Scenario: Single-use wearable patch with embedded 1-cell Li+ battery operating continuously for 7 days under variable load. IC Role / Device Role / Timing Role: Provides precision overdischarge protection (2.400V ±35mV) and low-power operation (3.0µA typ) to maximize usable capacity. Use Value: Extends effective battery life by 8–12% versus looser-threshold alternatives, directly increasing clinical monitoring duration. |
Use Scenario: Asset tracker powered by coin-cell-sized 1-cell Li+ battery requiring >12-month shelf life and reliable cold-weather startup. IC Role / Device Role / Timing Role: Delivers −40°C to +85°C operational range with guaranteed overcharge release hysteresis (0.200V) to prevent oscillation in temperature-varying environments. Use Value: Ensures stable protection behavior across industrial temperature gradients without firmware or external calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5460N242AA-TR | Fixed 2.4V overdischarge threshold (no programmability); 5.5µA active current; SOT23-6 package | Lacks 0V charge function and overvoltage charger detection; requires external capacitor for delay timing | Choose for cost-sensitive, non-recoverable applications where ultra-low BOM count outweighs feature set |
| SE9011B-242M | 2.42V overdischarge detection (±50mV); 4.2µA active current; no 0V charge option; 30V VDD–VM rating | Does not support selectable power-down mode; shorter tSHORT delay (0.5µs vs. 1.0µs typ) | Prefer when higher short-circuit response speed is prioritized over deep-sleep capability |
Compared with R5460N242AA-TR and SE9011B-242M, the AP9101CAK-CPTRG1 uniquely combines factory-configurable 0V charge enable, overvoltage charger detection, and sub-µA power-down mode - making it optimal for sealed, field-deployed Li+ packs requiring long-term reliability and full functional recovery.
Availability
AP9101CAK-CPTRG1 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headphone charging cases, medical wearable sensors, and Bluetooth trackers requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for AP9101CAK-CPTRG1 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 qualification aligned to AEC-Q standards.
The AP9101C 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 used in portable and wearables markets.
FAQ
What is the function of the VM pin on the AP9101CAK-CPTRG1?
The VM pin serves as the current-sense input for both charge and discharge paths. It monitors the voltage drop across an external sense resistor (R2) connected between P− and the battery negative terminal. This enables detection of discharge overcurrent, short-circuit, and charge overcurrent events with thresholds of 0.150V, 0.700V, and −0.150V respectively - all referenced to VSS.
Does the AP9101CAK-CPTRG1 support automatic recovery from overdischarge without a charger?
No - the AP9101CAK-CPTRG1 variant includes selectable power-down mode (not auto-wake-up), meaning recovery from overdischarge status requires external charger connection to raise battery voltage above VDU (3.000V). Unlike the AP9101CA auto-wake-up version, it does not monitor time-based release or load-disconnect conditions for autonomous exit from overdischarge.
How is overvoltage protection implemented on the AP9101CAK-CPTRG1?
Overvoltage protection is implemented via direct monitoring of the voltage between VDD and VM pins. When this differential exceeds 8.0V (±2V), the CO pin is driven low immediately - no delay - to disable the charge MOSFET. Protection releases when the VDD–VM voltage falls below 7.3V (±2V), also with zero delay, providing fast-response safeguard against faulty or mismatched chargers.
Can the AP9101CAK-CPTRG1 be used in automotive applications?
The AP9101CAK-CPTRG1 is not AEC-Q200 qualified and is not recommended for automotive under-hood or safety-critical applications. While its operating temperature range (−40°C to +85°C) meets ambient cabin requirements, Diodes Incorporated explicitly states that automotive-grade variants require separate qualification, PPAP capability, and IATF 16949 manufacturing - none of which apply to this part number.
AP9101CAK-CPTRG1 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
AP9101CAK-CPTRG1 FAQ
1.How can I place an order for AP9101CAK-CPTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-CPTRG1 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-CPTRG1 reliable?
The price and inventory of AP9101CAK-CPTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-CPTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-CPTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-CPTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-CPTRG1?
AP9101CAK-CPTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-CPTRG1 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-CPTRG1?
For technical support, including AP9101CAK-CPTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-CPTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-CPTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-CPTRG1 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-CPTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-CPTRG1?
All AP9101CAK-CPTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-CPTRG1, 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-CPTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-CPTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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