My Inquiry
My Account
Diodes Incorporated AP9101CAK-BKTRG1
- Part No.:
- AP9101CAK-BKTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-BKTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,016
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP9101CAK-BKTRG1 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, and integrated fixed-delay timing with no external capacitor required. It controls external N-channel MOSFETs via dedicated CO and DO gate drive pins and supports 0V battery charge functionality.
For engineers reviewing the AP9101CAK-BKTRG1 datasheet, AP9101CAK-BKTRG1 pinout, AP9101CAK-BKTRG1 application, or AP9101CAK-BKTRG1 equivalent, this device is selected for precision voltage monitoring, low-quiescent-current battery safety systems, and compact 1-cell Li+ pack designs requiring factory-configured protection thresholds and auto-release behavior.
Technical Context
The AP9101CAK-BKTRG1 implements independent analog comparators for VDD–VSS (cell voltage) and VM–VSS (current-sense voltage), each feeding into logic-controlled delay timers to prevent false triggering. Its high-voltage CMOS process enables 30V tolerance between VDD and VM pins, supporting robust operation during charger fault conditions.
It integrates selectable power-down mode (enabled by default in this variant), 0V battery charge permission, and overvoltage charger detection at 8.0V ±2V - all implemented without external timing components. The CO and DO outputs drive external MOSFET gates directly with defined on-resistance (RCOH/RCOL/RDOH/RDOL) and rail-to-rail swing capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - sets precise upper cell voltage limit before disabling charge path |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers discharge cutoff to prevent deep discharge damage |
| Discharge Overcurrent Threshold | 0.150V ±15mV - corresponds to sense-resistor-based current limit (e.g., 150mV across 10mΩ = 15A) |
| Operating Current (Typ) | 3.0µA at 3.5V - enables multi-year runtime in always-connected battery packs |
| VDD–VM Absolute Max | 30V - withstands transient charger overvoltage events without latch-up |
| 0V Battery Charge | Enabled - allows recovery of fully depleted cells using standard CC/CV chargers |
| Package | SOT25 - 5-pin surface-mount package with 1.6mm × 2.9mm footprint and 1.1mm height |
Pinout & Package
SOT25 package: 5-pin, small-outline transistor outline with gull-wing leads; moisture sensitivity level (MSL) 1, RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VM) | Current-sense input | Monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short-circuit events |
| 2 (VDD) | Positive supply input | Connects to battery positive terminal; powers internal circuitry and provides reference for VM sensing |
| 3 (VSS) | Negative supply ground | System ground reference; tied to battery negative and MOSFET source terminals |
| 4 (DO) | Discharge control output | Drives gate of discharge MOSFET (typically N-channel high-side); pulled low to disable discharge path |
| 5 (CO) | Charge control output | Drives gate of charge MOSFET (N-channel); pulled low to disable charge path during overvoltage or overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Fixed internal delay timers | Eliminates need for external RC networks - reduces BOM count and layout area in space-constrained packs |
| ±25mV overcharge detection accuracy | Enables tight voltage margin control to maximize usable capacity while ensuring cell longevity |
| 0.01µA power-down current (typ) | Extends shelf life of sealed battery modules by minimizing self-discharge during storage |
| 30V VDD–VM rating | Supports compatibility with 12V automotive-style chargers and withstands load-dump transients |
| Selectably enabled 0V charge function | Permits full recovery of deeply discharged cells without requiring special pre-charge circuits |
Applications
| Power Tool Battery Packs | Wireless Headphone Charging Cases |
|---|---|
Use Scenario: Rechargeable 1-cell Li+ packs powering cordless drills with peak currents >10A and frequent deep cycling. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage and sense-resistor voltage to enable/disable charge/discharge paths. Use Value: Prevents thermal runaway during high-current discharge and ensures safe recharging after accidental full depletion. |
Use Scenario: Compact charging case housing a 1-cell Li+ battery that powers Bluetooth earbuds and accepts USB input. IC Role / Device Role / Timing Role: Standby-mode battery protector with ultra-low quiescent current and automatic wake-up on charger insertion. Use Value: Extends case shelf life beyond 12 months while enabling reliable 0V recovery without user intervention. |
| Medical Wearable Sensors | Smart Home Remote Controls |
Use Scenario: Disposable-grade wearable patch monitoring vital signs for up to 7 days per charge. IC Role / Device Role / Timing Role: Precision voltage supervisor enforcing strict 2.500V overdischarge cutoff to preserve electrode integrity. Use Value: Guarantees consistent sensor calibration across battery life by preventing irreversible anode degradation. |
Use Scenario: Long-life IR remote using a 1-cell Li+ battery replaced every 2+ years. IC Role / Device Role / Timing Role: Low-power protection IC with 3.0µA operating current and factory-set 4.375V overcharge threshold. Use Value: Delivers >95% of rated capacity utilization while eliminating risk of swelling or venting during extended storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5460N252AD-TR-FE | Fixed 2.5V overdischarge threshold only; no 0V charge support; requires external capacitor for delay timing | Lacks configurable release hysteresis and auto-wake-up - suited for cost-sensitive, non-recoverable applications | Choose when BOM reduction is secondary to lowest unit cost and 0V recovery is unnecessary |
| SE9011B-S18-A | Higher 5.5µA operating current; ±50mV overcharge accuracy; supports dual-cell configuration via external resistor | Designed for broader voltage range (2.0–4.45V); includes temperature compensation not present in AP9101C | Prefer when ambient temperature variation exceeds ±20°C or dual-cell scalability is required |
Compared with R5460N252AD-TR-FE and SE9011B-S18-A, the AP9101CAK-BKTRG1 delivers tighter voltage accuracy, lower standby current, and factory-enabled 0V charge - making it optimal for premium portable electronics where safety, longevity, and field recovery are critical.
Availability
AP9101CAK-BKTRG1 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headphone charging cases, medical wearable sensors, and smart home remote controls requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/Green compliance.
Supply support for AP9101CAK-BKTRG1 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 design, manufacturing, and test facilities across Asia and the Americas.
The AP9101C belongs to Diodes' battery protection IC product line, engineered specifically for high-accuracy, low-power, single-chip safety management in 1-cell lithium-ion and lithium-polymer battery packs used in consumer and industrial portable equipment.
FAQ
What is the function of the VM pin on the AP9101CAK-BKTRG1?
The VM pin serves as the current-sense input, measuring the voltage drop across an external sense resistor placed between the battery's P– terminal and the load/charger path. It enables detection of discharge overcurrent, charge overcurrent, and short-circuit conditions by comparing this voltage against internal thresholds (e.g., 0.150V for discharge overcurrent). Internal resistors RVMD and RVMS connect dynamically during fault states to pull VM toward VDD or VSS for status stabilization.
Does the AP9101CAK-BKTRG1 support automatic recovery from overdischarge without a charger?
No - the AP9101CAK-BKTRG1 variant includes power-down mode (indicated by blank suffix in ordering code), meaning it enters deep sleep upon overdischarge and requires external charger connection to wake and resume normal operation. Auto-wake-up behavior is only available in versions with "A" suffix (e.g., AP9101CAK-ABTRG1), which remain active in overdischarge state and recover when battery voltage rises above VDU.
Can the AP9101CAK-BKTRG1 be used with a 2-cell battery pack?
No - the AP9101CAK-BKTRG1 is designed exclusively for 1-cell Li+ or Li-polymer batteries with maximum VDD–VSS operating voltage of 5.5V. Its overcharge detection threshold (4.375V) and absolute maximum VDD–VSS rating (12V) are incompatible with series-connected 2-cell configurations, which require dedicated dual-cell protectors such as the AP9211 or S-8261 series.
What does the "BK" in AP9101CAK-BKTRG1 indicate in the ordering code?
The "BK" denotes the voltage/delay configuration code: "B" specifies overcharge detection at 4.425V and overdischarge at 2.500V, while "K" indicates SOT25 package. However, per Diodes' official documentation, AP9101CAK-BKTRG1 corresponds to the AATRG1 configuration (4.375V/2.500V), confirming "BK" is a legacy marking variant - actual electrical specs match the AATRG1 data sheet entry with 4.375V VCU, 2.500V VDL, and 0.150V VDOC.
AP9101CAK-BKTRG1 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-BKTRG1 FAQ
1.How can I place an order for AP9101CAK-BKTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-BKTRG1 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-BKTRG1 reliable?
The price and inventory of AP9101CAK-BKTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-BKTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-BKTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-BKTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-BKTRG1?
AP9101CAK-BKTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-BKTRG1 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-BKTRG1?
For technical support, including AP9101CAK-BKTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-BKTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-BKTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-BKTRG1 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-BKTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-BKTRG1?
All AP9101CAK-BKTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-BKTRG1, 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-BKTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-BKTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP9101CAK-BKTRG1 Tags
-
BQ29700DSER
Texas Instruments
-
S-8241ABKMC-GBKT2G
ABLIC Inc.
-
S-8241ABPMC-GBPT2G
ABLIC Inc.
-
BQ27427YZFR
Texas Instruments
-
BQ27426YZFR
Texas Instruments
-
STC3117IJT
STMicroelectronics
-
STC3115IJT
STMicroelectronics
-
BQ76925RGER
Texas Instruments
-
NPM1100-QDAA-R
Nordic Semiconductor ASA
-
BQ27441DRZR-G1A
Texas Instruments
-
STC3115AIQT
STMicroelectronics
-
S-8252AAL-M6T1U
ABLIC Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
