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Diodes Incorporated AP9101CAK-CETRG1
- Part No.:
- AP9101CAK-CETRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-CETRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,205
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Product details
Overview
AP9101CAK-CETRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.375V ±25mV, overdischarge detection at 2.500V ±35mV, and discharge overcurrent detection at 0.150V ±15mV. It integrates fixed delay timing, 0V battery charge enable, and selectable power-down mode, and is deployed in portable power tools and medical handheld devices.
For engineers reviewing the AP9101CAK-CETRG1 datasheet, AP9101CAK-CETRG1 pinout, AP9101CAK-CETRG1 application, or AP9101CAK-CETRG1 equivalent, this page delivers verified voltage thresholds, MOSFET gate control logic, SOT25 package details, and real-world battery pack integration guidance - not generic timing or power management claims.
Technical Context
The AP9101CAK-CETRG1 implements dual independent voltage monitoring paths: one between VDD–VSS for cell voltage (overcharge/overdischarge), and another across VM–VSS for current-sense voltage (discharge/charge overcurrent, short-circuit). Its internal logic enforces auto-release overcharge protection and supports both power-down and auto-wake-up operation modes via factory configuration.
It uses high-voltage CMOS process technology enabling 30V tolerance between VDD and VM pins, and incorporates built-in pull-up (RVMD) and pull-down (RVMS) resistors on the VM sense node to manage state transitions during overdischarge and overcurrent events without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - triggers CO pin low after tCU delay to disable charge FET when cell exceeds safe voltage |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers DO pin low after tDL delay to disable discharge FET when cell depletes below safe threshold |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via VM–VSS drop, initiating DO shutdown within tDOC |
| 0V Battery Charge Function | Enabled - permits charging of fully depleted cells by allowing charger connection even at 0V battery voltage |
| Operating Current (Typ) | 3.0µA at VDD=3.5V - enables multi-year runtime in battery-powered standby applications |
| VM–VSS Sense Range | −0.3V to +5.5V - supports bidirectional current sensing with ±0.15V resolution for discharge/charge overcurrent |
| Package | SOT25 - 5-pin surface-mount package with 1.6mm × 2.9mm footprint, optimized for compact battery pack PCB layout |
Pinout & Package
SOT25 package: 5-pin, small-outline transistor outline with exposed thermal pad (not electrically connected), JEDEC MO-178AC compliant, 1.6mm × 2.9mm × 1.1mm body height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VM | Current-sense input | Monitors voltage drop across external sense resistor (R2) to detect charge/discharge overcurrent and short-circuit conditions |
| 2: VDD | Positive supply input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO gate outputs |
| 3: VSS | Negative supply reference | System ground reference for all voltage measurements and logic; tied to battery negative |
| 4: DO | Discharge control output | Drives gate of external N-channel MOSFET to interrupt discharge path during overdischarge or overcurrent |
| 5: CO | Charge control output | Drives gate of external N-channel MOSFET to interrupt charge path during overcharge, charge overcurrent, or overvoltage charger fault |
Key Features
| Feature | Design Value |
|---|---|
| Fixed internal delay timers | Eliminates need for external RC networks - tCU/tDL/tDOC accuracy ±20% at +25°C reduces BOM count and layout area |
| Selectably enabled 0V charge | Factory-configured option allows recovery of deeply discharged Li+ cells without manual pre-charge circuitry |
| High-accuracy voltage detection | ±25mV overcharge and ±35mV overdischarge thresholds ensure precise cell voltage window enforcement per JEITA guidelines |
| 30V VM–VDD tolerance | Supports direct connection to chargers up to 30V without level-shifting, simplifying protection for high-voltage adapter inputs |
| Ultra-low power-down current | 0.01µA typical - extends shelf life of sealed battery packs during long-term storage |
Applications
| Power Tools | Medical Handheld Devices |
|---|---|
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 2.500V and short-circuit shutdown within 0.6–1.4µs to prevent thermal runaway during stall events. Use Value: Prevents irreversible capacity loss and fire hazard by reacting faster than external MCU-based monitoring can achieve. | Use Scenario: Portable ultrasound probe powered by sealed 1-cell Li+ battery requiring >5-year shelf life and reliable wake-from-dead-battery operation. IC Role / Device Role / Timing Role: Enables 0V battery charge function and ultra-low 0.01µA power-down current to maintain readiness after prolonged storage. Use Value: Eliminates field failure due to unresponsive devices caused by self-discharged batteries, reducing service calls and warranty returns. |
| Wireless Headphones | Smart Wearables |
Use Scenario: True wireless stereo earbuds with space-constrained 1-cell Li+ battery and aggressive fast-charge cycles. IC Role / Device Role / Timing Role: Monitors overcharge at 4.375V and overvoltage charger faults (8.0V detection) to protect against AC adapter surges during rapid charging. Use Value: Avoids electrolyte decomposition and swelling by cutting off charge before cell reaches 4.4V, extending cycle life beyond 500 cycles. | Use Scenario: Fitness tracker with integrated battery and no user-serviceable access, requiring fail-safe protection against overtemperature-induced overdischarge. IC Role / Device Role / Timing Role: Uses VM–VSS sensing to detect abnormal discharge current during sensor activation bursts and shuts down DO within 0.6–1.4ms. Use Value: Maintains functional safety certification (IEC 62368-1) by preventing sustained overcurrent that could exceed temperature limits in sealed enclosure. |
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 |
|---|---|---|---|
| R5460N258AA-TR | Fixed 2.5V overdischarge threshold (no programmability); 4.25V overcharge; no 0V charge function | Targeted at cost-sensitive consumer electronics where deep discharge recovery is not required | Select if BOM cost reduction outweighs need for 0V charge and tighter voltage tolerances |
| BD8630GUL | Integrated charge/discharged FETs (single-chip solution); higher quiescent current (5µA); no overvoltage charger detection | Used in ultra-compact battery modules where PCB area is more constrained than component count | Choose only when eliminating external MOSFETs justifies trade-off in power consumption and missing charger overvoltage protection |
Compared with R5460N258AA-TR and BD8630GUL, the AP9101CAK-CETRG1 uniquely combines factory-programmed 0V charge enable, ±25mV overcharge accuracy, and dedicated 8.0V charger overvoltage detection - making it optimal for medical and industrial 1-cell packs demanding full safety coverage and long-term reliability.
Availability
AP9101CAK-CETRG1 is available at Aetrix Electronics and suitable for power tools, medical handheld devices, wireless headphones, and smart wearables requiring stable component supply across extended production lifecycles.
Supply support for AP9101CAK-CETRG1 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 design centers in Asia, Europe, and the U.S., and manufacturing in IATF 16949-certified facilities.
The AP9101C product line delivers highly integrated, precision battery protection ICs for 1-cell Li+ systems, designed specifically to reduce external component count while meeting stringent safety standards for portable and medical electronics.
FAQ
What is the function of the VM pin on the AP9101CAK-CETRG1?
The VM pin serves as the bidirectional current-sense input, measuring voltage between itself and VSS to detect discharge overcurrent (positive VM–VSS), charge overcurrent (negative VM–VSS), and short-circuit conditions. Internally, it connects to RVMS (pull-down) and RVMD (pull-up) resistors to manage state transitions during fault recovery without external components.
Does the AP9101CAK-CETRG1 support automatic release from overcharge protection?
Yes - the AP9101CAK-CETRG1 implements auto-release overcharge protection: once the battery voltage falls below the overcharge release voltage (4.175V), the CO pin returns high to re-enable the charge FET without requiring external reset or power cycle, ensuring seamless resumption of charging after transient overvoltage events.
How does the 0V battery charge function operate in practice?
When enabled (as in AP9101CAK-CETRG1), the 0V battery charge function allows the charger to apply voltage to a fully depleted cell (0V), triggering internal wake-up and enabling CO pin activation. This bypasses the normal under-voltage lockout, permitting safe recharge without manual intervention or external pre-charge circuitry.
Can the AP9101CAK-CETRG1 be used with 2-cell or higher battery configurations?
No - the AP9101CAK-CETRG1 is strictly designed for single-cell Li+ or Li-polymer batteries (nominal 3.7V, max 4.4V). Its voltage detection ranges (e.g., 4.375V overcharge) and absolute maximum ratings (VDD–VSS ≤12V) do not support series-connected cells; multi-cell applications require dedicated multi-cell protection ICs such as the AP9211 or S-8261 series.
AP9101CAK-CETRG1 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-CETRG1 FAQ
1.How can I place an order for AP9101CAK-CETRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-CETRG1 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-CETRG1 reliable?
The price and inventory of AP9101CAK-CETRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-CETRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-CETRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-CETRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-CETRG1?
AP9101CAK-CETRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-CETRG1 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-CETRG1?
For technical support, including AP9101CAK-CETRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-CETRG1 requirements.
6.How does Aetrix verify that AP9101CAK-CETRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-CETRG1 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-CETRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-CETRG1?
All AP9101CAK-CETRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-CETRG1, 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-CETRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-CETRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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