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Diodes Incorporated AP9101CAK-BHTRG1
- Part No.:
- AP9101CAK-BHTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-BHTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,873
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Product details
Overview
AP9101CAK-BHTRG1 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 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-BHTRG1 datasheet, AP9101CAK-BHTRG1 pinout, AP9101CAK-BHTRG1 application, or AP9101CAK-BHTRG1 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-BHTRG1 implements dual independent voltage comparators (for VDD–VSS and VM–VSS), current-sense amplification with programmable VDOC/VCOC thresholds, and a logic-controlled delay circuit that triggers CO/DO gate shutdown on overvoltage, overcurrent, or short-circuit events. Its high-voltage CMOS process supports up to 30V differential between VDD and VM pins.
It operates in two configurable modes: power-down (0.1µA standby) or auto-wake-up (active overdischarge monitoring), and includes an overvoltage charger detection circuit (8.0V ±2V threshold) with immediate CO pin response-no delay-ensuring fast isolation of faulty chargers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.250V ±25mV - sets precise upper cell voltage limit before CO pin disables charge path |
| Overdischarge Detection Voltage | 2.400V ±35mV - triggers DO pin shutdown to prevent deep discharge damage to Li+ cell |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via sense resistor voltage drop at VM pin |
| Quiescent Current (Operation) | 3.0µA typ at +25°C - enables multi-year battery shelf life in always-connected protection circuits |
| VM–VSS Sense Range | −0.2V to +0.32V - supports bidirectional current sensing for charge/discharge control |
| CO/DO Output Drive | 6kΩ typ "H" resistance - directly drives standard N-MOSFET gates without external buffers |
| Operating Temperature | −40°C to +85°C - qualified for consumer, industrial, and portable medical battery applications |
Pinout & Package
AP9101CAK-BHTRG1 is packaged in SOT25 (5-pin) with lead-free, RoHS-compliant construction. Pin 1 is marked; pinout is identical across SOT25 and SOT26 variants per datasheet Figure 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current-sense input | Monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short-circuit conditions |
| VDD | Positive supply input | Connects to battery positive terminal; powers internal circuitry and provides reference for VM sensing |
| VSS | Negative supply ground | System ground reference for all internal comparators and logic; tied to battery negative |
| DO | Discharge control output | Drives gate of discharge N-MOSFET; goes low to disconnect load during overdischarge or overcurrent |
| CO | Charge control output | Drives gate of charge N-MOSFET; goes low to block charging during overcharge, overvoltage, or charge overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed protection thresholds | Fixed VCU=4.250V, VDL=2.400V, VDOC=0.150V - eliminates external resistor trimming and calibration effort |
| Integrated delay timing | No external capacitor required - reduces BOM count and PCB footprint while maintaining ±20% timing accuracy |
| 0V battery charge enable | Permits safe reactivation of deeply discharged cells (0V) using standard CC/CV chargers |
| Auto-release overcharge protection | Automatically restores charge path when cell voltage falls below 4.050V (VCL), avoiding manual reset |
| Overvoltage charger detection | 8.0V ±2V threshold on VDD–VM - protects against defective or mismatched chargers without added components |
Applications
| Smart Wearable Battery Pack | Bluetooth Headset Power Management |
|---|---|
|
Use Scenario: Compact 1-cell Li+ pack powering fitness trackers with aggressive sleep-mode current budgets. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage and load current; executes sub-10ms short-circuit cutoff via DO pin. Use Value: 3.0µA operating current extends shelf life; factory-set 2.400V overdischarge threshold prevents irreversible capacity loss in small-format cells. |
Use Scenario: Rechargeable earbud case with integrated charging and status indication. IC Role / Device Role / Timing Role: Dual-role protector enabling both charge path control (CO) and discharge path control (DO); manages 0V recovery during long-term storage. Use Value: Built-in 0V battery charge function allows full recharge after months of dormancy without firmware intervention or external wake-up circuitry. |
| Portable Medical Sensor Module | USB-C Power Bank Core Protection |
|
Use Scenario: CE-certified glucose monitor with single-cell Li+ battery and strict safety compliance requirements. IC Role / Device Role / Timing Role: Safety-critical voltage/current supervisor enforcing IEC 62368-1 battery fault limits; uses ±25mV overcharge accuracy for certification margin. Use Value: High-accuracy thresholds and ±35mV overdischarge detection ensure consistent cell health across temperature range (−40°C to +85°C). |
Use Scenario: 10,000mAh power bank using parallel 1-cell configurations with shared protection logic. IC Role / Device Role / Timing Role: Per-cell protector coordinating with system MCU via DO/CO state feedback; handles 0.150V discharge overcurrent detection at 2A load. Use Value: Fixed-time delay architecture ensures deterministic response to short-circuit events (<1µs tSHORT), preventing thermal runaway in high-capacity packs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP9101CAK-BATRG1 | Overcharge detection set to 4.375V instead of 4.250V; same VDL=2.400V and VDOC=0.150V | Suitable for higher-voltage Li+ chemistries (e.g., LiCoO₂ with wider Vmax tolerance) | Select when nominal cell voltage exceeds 4.2V and tighter overcharge margin is needed. |
| AP9101CAK-BITRG1 | Overcharge detection at 4.500V, overdischarge at 2.400V, and discharge overcurrent at 0.150V - higher VCU with same timing and feature set | Targeted at high-capacity prismatic cells with elevated charge termination voltages | Choose for applications where 4.5V charge ceiling is specified and 2.4V discharge floor remains critical. |
Compared with AP9101CAK-BHTRG1, the BH variant offers the lowest overcharge detection voltage (4.250V) among factory-configured options, making it optimal for conservative Li+ protection where cell longevity outweighs maximum capacity utilization-while maintaining identical timing, 0V charge, and auto-release behavior.
Availability
AP9101CAK-BHTRG1 is available at Aetrix Electronics and suitable for smart wearable battery packs, Bluetooth headset power management, portable medical sensor modules, and USB-C power bank core protection requiring stable component supply and long-lifecycle support.
Supply support for AP9101CAK-BHTRG1 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 logistics operations certified to IATF 16949 and ISO 9001 standards.
The AP9101C series belongs to Diodes' battery protection IC product line, engineered specifically for cost-sensitive, space-constrained 1-cell Li+ applications requiring high-accuracy voltage monitoring, ultra-low power consumption, and minimal external component count.
FAQ
What is the function of the VM pin on AP9101CAK-BHTRG1?
The VM pin serves as the current-sense input terminal, measuring voltage drop across an external sense resistor connected between the battery's P− node and the load. It enables detection of discharge overcurrent (≥0.150V), charge overcurrent (≤−0.150V), and short-circuit events (≥0.700V), triggering DO or CO pin shutdown within fixed delay times.
Does AP9101CAK-BHTRG1 support automatic recovery from overdischarge?
Yes-AP9101CAK-BHTRG1 supports auto-wake-up mode (indicated by 'A' in part number suffix), allowing recovery from overdischarge when battery voltage rises above 2.400V (VDL) without requiring external charger connection. This differs from power-down variants that mandate charger presence to exit overdischarge state.
Can AP9101CAK-BHTRG1 be used with lithium iron phosphate (LiFePO₄) cells?
No-AP9101CAK-BHTRG1 is optimized for lithium-ion/lithium-polymer chemistry with nominal 3.7V and max 4.2V charge voltage. Its 4.250V overcharge threshold and 2.400V overdischarge threshold fall outside typical LiFePO₄ ranges (2.5V–3.65V), risking premature shutdown or insufficient protection.
What is the significance of the 'RG1' suffix in AP9101CAK-BHTRG1?
The 'RG1' suffix denotes RoHS-compliant and halogen-free "Green" packaging per Diodes Incorporated's specifications: <900ppm bromine, <900ppm chlorine (total Br+Cl <1500ppm), and <1000ppm antimony compounds, with no intentionally added lead and full compliance to EU RoHS directives 2011/65/EU and 2015/863/EU.
AP9101CAK-BHTRG1 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-BHTRG1 FAQ
1.How can I place an order for AP9101CAK-BHTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-BHTRG1 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-BHTRG1 reliable?
The price and inventory of AP9101CAK-BHTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-BHTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-BHTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-BHTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-BHTRG1?
AP9101CAK-BHTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-BHTRG1 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-BHTRG1?
For technical support, including AP9101CAK-BHTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-BHTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-BHTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-BHTRG1 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-BHTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-BHTRG1?
All AP9101CAK-BHTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-BHTRG1, 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-BHTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-BHTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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