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Diodes Incorporated AP9101CAK-CBTRG1
- Part No.:
- AP9101CAK-CBTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-CBTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,650
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Product details
Overview
AP9101CAK-CBTRG1 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, discharge overcurrent detection at 0.150V ±15mV, built-in fixed delay timing, and 0V battery charge functionality. It controls external N-channel MOSFETs via DO (discharge gate) and CO (charge gate) pins in portable power tools, Bluetooth headsets, and wearable medical monitors.
For engineers reviewing the AP9101CAK-CBTRG1 datasheet, AP9101CAK-CBTRG1 pinout, AP9101CAK-CBTRG1 application, or AP9101CAK-CBTRG1 equivalent, this page delivers verified voltage thresholds, real-world timing behavior, SOT25 package constraints, and functional alternatives with documented release voltage and overcurrent detection differences.
Technical Context
The AP9101CAK-CBTRG1 integrates high-precision analog comparators for five independent protection functions-overcharge, overdischarge, discharge overcurrent, short-circuit, and charge overcurrent-with fixed internal delay timers (tCU = 1.0s typ, tDOC = 12ms typ, tSHORT = 8µs typ). Its VM pin senses current-sense voltage across an external R2 resistor while VDD–VSS monitors cell voltage directly.
It uses a high-voltage CMOS process enabling 30V tolerance between VDD and VM pins, supports selectable power-down mode (0.01µA typ), and includes factory-configured 0V battery charge enablement. The device operates across –40°C to +85°C with supply voltage range 1.5V–5.5V and features auto-release overcharge protection mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - triggers CO pin low after 1.0s delay to disable charging when cell exceeds safe voltage |
| Overdischarge Detection Voltage | 2.500V ±35mV - asserts DO pin low after 100ms delay to halt discharge before deep cell depletion |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects >1.5A through 100mΩ sense resistor and disables discharge path within 12ms |
| Short-Circuit Detection Voltage | 0.700V ±100mV - responds to >7A fault current within 8µs to prevent thermal runaway |
| Operating Current (Active) | 3.0µA typ at 3.5V - enables multi-year runtime in always-on battery management systems |
| Power-Down Current | 0.01µA typ - extends shelf life of sealed battery packs during storage |
| 0V Battery Charge Enable | Factory-set enabled - allows recovery of fully depleted cells using standard CC/CV chargers |
Pinout & Package
AP9101CAK-CBTRG1 is housed in a RoHS-compliant, lead-free SOT25 (SC-74A) surface-mount package measuring 2.9mm × 1.6mm × 1.1mm, optimized for compact 1-cell battery pack PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM (Pin 1) | Current-sense input | Monitors voltage drop across external R2 resistor to detect charge/discharge current magnitude and direction |
| VDD (Pin 2) | Positive supply input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO gate outputs |
| VSS (Pin 3) | Negative supply reference | Connects to battery negative; serves as ground reference for all voltage comparators and logic |
| DO (Pin 4) | Discharge control output | Drives gate of external N-MOSFET in discharge path; high = on, low = off (open-drain) |
| CO (Pin 5) | Charge control output | Drives gate of external N-MOSFET in charge path; high = on, low = off (open-drain) |
Key Features
| Feature | Design Value |
|---|---|
| Fixed internal delay timers | Eliminates need for external RC networks-reduces BOM count and layout sensitivity to parasitic capacitance |
| ±25mV overcharge detection accuracy | Enables tight voltage margin control for Li+ cells, minimizing risk of electrolyte decomposition or gas generation |
| 0V battery charge function | Permits safe reactivation of deeply discharged cells without requiring specialized pre-charge circuits |
| 30V VDD–VM rating | Supports direct connection to high-voltage chargers (e.g., USB PD 9V) without level-shifting components |
| Selectable power-down mode | Reduces quiescent current to 10nA range during long-term storage, preserving battery capacity |
Applications
| Power Tools | Wireless Headsets |
|---|---|
Use Scenario: Cordless drill battery pack subjected to intermittent high-current bursts (up to 20A) and thermal cycling. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage and VM-sensed current to disable discharge path within 12ms during overcurrent events. Use Value: Prevents MOSFET failure and cell venting by enforcing strict 0.150V discharge overcurrent threshold with 8µs short-circuit response. |
Use Scenario: Compact Bluetooth earbud battery exposed to repeated shallow cycles and storage at partial charge. IC Role / Device Role / Timing Role: Dual-function protector detecting both overdischarge (2.500V) and enabling 0V recharge to recover self-discharged cells. Use Value: Extends usable life of 150mAh Li-poly cells by permitting full recovery from 0V without external wake-up circuitry. |
| Medical Wearables | Smart Tags |
Use Scenario: FDA-classified glucose monitor with sealed battery requiring >5-year shelf life and field reliability. IC Role / Device Role / Timing Role: Low-power supervisor asserting DO/CO gates only during fault conditions; draws just 3.0µA in active mode. Use Value: Achieves >3-year standby from 300mAh cell due to 0.01µA power-down current and factory-set auto-wake-up capability. |
Use Scenario: Asset-tracking tag powered by coin cell, deployed unattended for 2+ years with infrequent GPS pings. IC Role / Device Role / Timing Role: Precision voltage guard detecting overcharge at 4.375V ±25mV to prevent swelling in constrained enclosures. Use Value: Maintains dimensional stability of 12mm-diameter battery by limiting max charge voltage with <0.5% error band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5640T252C-TR | Overcharge release voltage fixed at 4.15V (vs. 4.175V); no 0V charge function; 1.2µA operating current | Lacks 0V recovery capability; suited for cost-sensitive consumer electronics where deep discharge is prevented by system firmware | Select when BOM cost reduction outweighs need for field-recoverable dead batteries |
| BD85501GUL | Integrated charge/discharged MOSFETs; 2.8V overdischarge threshold; ±50mV accuracy; 1.8µA operating current | Self-contained solution eliminates external FETs but increases thermal footprint; less precise voltage detection | Choose for rapid prototyping where board space is secondary to design cycle time |
Compared with R5640T252C-TR and BD85501GUL, AP9101CAK-CBTRG1 uniquely combines 0V charge enablement, ±25mV overcharge accuracy, and ultra-low 0.01µA power-down current-making it optimal for sealed, long-life, field-deployed Li+ packs requiring guaranteed recovery from total discharge.
Availability
AP9101CAK-CBTRG1 is available at Aetrix Electronics and suitable for power tools, wireless headsets, medical wearables, and smart tags requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/Green compliance.
Supply support for AP9101CAK-CBTRG1 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 for power management, signal integrity, and protection applications.
The AP9101C series belongs to Diodes' battery protection IC product line, engineered specifically for high-accuracy, low-quiescent-current supervision of single-cell Li-ion and Li-polymer battery packs in space-constrained portable devices.
FAQ
What is the function of the VM pin on AP9101CAK-CBTRG1?
The VM pin serves as the current-sense input that measures voltage drop across an external resistor (R2) placed between the battery's P− node and the load. It enables detection of discharge overcurrent, charge overcurrent, and short-circuit conditions by comparing VM–VSS against internal thresholds (e.g., 0.150V for discharge overcurrent). Its 30V absolute maximum rating allows direct interface with high-voltage charger inputs without attenuation.
Does AP9101CAK-CBTRG1 support automatic recovery from overdischarge?
Yes-AP9101CAK-CBTRG1 implements auto-wake-up functionality. When in overdischarge state, it exits protection and resumes normal operation once the battery voltage rises above the overdischarge release voltage (2.900V) without requiring external charger connection. This behavior is factory-configured and distinct from power-down mode variants that mandate charger presence for recovery.
How does the 0V battery charge function operate in practice?
The 0V battery charge function permits the AP9101CAK-CBTRG1 to enable charging even when the connected Li+ cell has fully self-discharged to 0V. Internally, it overrides the typical under-voltage lockout, allowing the CO pin to remain high during initial charge application. This enables standard CC/CV chargers to safely restore capacity without requiring separate pre-charge circuitry or manual intervention.
Can AP9101CAK-CBTRG1 be used with 2-cell battery configurations?
No-AP9101CAK-CBTRG1 is strictly designed for 1-cell Li+ or Li-polymer applications with VDD–VSS operating range up to 5.5V. Its overcharge detection threshold (4.375V) and absolute maximum supply rating (12V) are incompatible with stacked 2-cell voltages (typically 7.2V–8.4V). For multi-cell packs, Diodes recommends the AP9211 or AP9221 series, which support dual-cell voltage monitoring and balancing interfaces.
AP9101CAK-CBTRG1 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-CBTRG1 FAQ
1.How can I place an order for AP9101CAK-CBTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-CBTRG1 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-CBTRG1 reliable?
The price and inventory of AP9101CAK-CBTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-CBTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-CBTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-CBTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-CBTRG1?
AP9101CAK-CBTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-CBTRG1 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-CBTRG1?
For technical support, including AP9101CAK-CBTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-CBTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-CBTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-CBTRG1 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-CBTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-CBTRG1?
All AP9101CAK-CBTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-CBTRG1, 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-CBTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-CBTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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