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Diodes Incorporated AP9101CAK-BFTRG1
- Part No.:
- AP9101CAK-BFTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-BFTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,238
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Product details
Overview
AP9101CAK-BFTRG1 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 circuits eliminating external capacitors. It controls external N-channel MOSFETs via DO (discharge gate) and CO (charge gate) to enforce safety limits in portable power tools and Bluetooth headsets.
For engineers reviewing the AP9101CAK-BFTRG1 datasheet, AP9101CAK-BFTRG1 pinout, AP9101CAK-BFTRG1 application, or AP9101CAK-BFTRG1 equivalent, this device supports precise voltage threshold selection, selectable 0V battery charge functionality, and high-voltage tolerance (30V between VDD and VM), making it suitable for compact, low-power Li+ pack designs requiring robust fault response and minimal BOM count.
Technical Context
The AP9101CAK-BFTRG1 implements independent analog comparators with precision reference circuits for five distinct fault conditions: overcharge, overdischarge, discharge overcurrent, short-circuit, and charge overcurrent. Each detection path includes configurable hysteresis and fixed delay timers (e.g., tCU = 1.0s typ, tSHORT = 8µs typ) with ±20% accuracy at +25°C.
Its dual-mode operation-selectable Power-Down or Auto-Wake-Up-enables ultra-low quiescent current (0.01µA typ in Power-Down) while maintaining fast wake-up capability during overdischarge recovery. The IC uses high-voltage CMOS process technology to sustain 30V differential between VDD and VM pins, enabling direct integration into high-side sensing configurations without level-shifting components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - sets precise upper cell voltage limit before disabling charge FET |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers discharge cutoff to prevent deep discharge damage |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via sense resistor voltage drop |
| Short-Circuit Detection Voltage | 0.700V ±100mV - enables sub-10µs shutdown for catastrophic fault isolation |
| Operating Current (Typ) | 3.0µA at VDD=3.5V - ensures multi-year battery shelf life in standby |
| VM–VDD Absolute Max | 30V - supports direct connection to charger input without external clamping |
| 0V Battery Charge | Enabled - allows safe recharge of fully depleted cells without manual intervention |
| Package | SOT25 - 5-pin surface-mount package with 1.6mm × 2.9mm footprint for space-constrained PCBs |
Pinout & Package
SOT25 package: 5-pin, small-outline transistor with gull-wing leads; pin 1 marked; RoHS-compliant, halogen-free, lead-free construction.
| 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 events |
| VDD | Positive Supply Input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO outputs |
| VSS | Negative Supply Reference | Ground reference for all internal comparators and logic; connects to battery negative |
| DO | Discharge Control Output | Drives gate of external discharge N-MOSFET; pulled low to disable discharge path during faults |
| CO | Charge Control Output | Drives gate of external charge N-MOSFET; pulled low to disable charge path during overcharge or charge overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Fixed Delay Timing Circuits | Eliminates need for external timing capacitors - reduces BOM count and layout area by ≥2 components |
| Selectably Enabled 0V Charging | Factory-configured option permits safe recharge of fully discharged cells without external wake-up circuitry |
| High-Accuracy Voltage Thresholds | ±25mV overcharge detection tolerance enables tighter cell voltage window control vs. ±50mV competitors |
| Ultra-Low Power-Down Mode | 0.01µA typical current draw extends shelf life in long-storage applications such as medical backup batteries |
| 30V VM–VDD Tolerance | Supports direct integration with high-voltage chargers without external Zener clamps or level shifters |
Applications
| Power Tool Battery Packs | Wireless Headset Batteries |
|---|---|
|
Use Scenario: Cordless drill battery pack subjected to high-current pulses (>10A) and thermal cycling during repeated charge/discharge cycles. IC Role / Device Role / Timing Role: Protection IC monitoring cell voltage and VM sense node to disable charge/discharge FETs within 1.0s (overcharge) or 8µs (short-circuit). Use Value: Prevents thermal runaway and irreversible capacity loss by enforcing strict voltage/current limits under dynamic load conditions. |
Use Scenario: Compact Bluetooth headset with 300mAh Li+ cell requiring minimal PCB area and multi-year shelf life. IC Role / Device Role / Timing Role: Single-chip protector providing overdischarge cutoff at 2.500V and 0.01µA power-down current to preserve charge during storage. Use Value: Enables >5-year shelf life and eliminates need for mechanical disconnect switches or external wake-up circuitry. |
| Medical Portable Monitors | Smart Wearable Sensors |
|
Use Scenario: Battery-powered ECG monitor used intermittently over 24-month service life with infrequent charging. IC Role / Device Role / Timing Role: Fault detector enforcing 2.500V overdischarge release and 4.375V overcharge cutoff while supporting 0V battery recharge after long-term storage. Use Value: Ensures reliable first-use activation after extended shelf storage without user-initiated conditioning cycles. |
Use Scenario: Fitness tracker with 120mAh Li+ cell operating in temperature range −20°C to +60°C with daily charge cycles. IC Role / Device Role / Timing Role: Precision protector delivering ±35mV overdischarge detection accuracy across full temperature range to avoid false shutdowns. Use Value: Maintains consistent runtime and prevents premature cutoff in variable ambient conditions without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5460N258AA-TR | Fixed 2.5V overdischarge threshold; no 0V charge function; SOT23-6 package | Lacks factory-configurable 0V charge and adjustable hysteresis; requires external capacitor for delay timing | Choose when cost sensitivity outweighs configurability needs and board space allows SOT23-6 footprint |
| BD14000FVJ-E2 | Integrated charge/discharged FETs; 4.25V overcharge threshold; higher 5.5µA operating current | Monolithic solution eliminates external MOSFETs but increases thermal dissipation and limits max current handling | Prefer for ultra-compact designs where <2A continuous current suffices and thermal management is feasible |
Compared with R5460N258AA-TR and BD14000FVJ-E2, the AP9101CAK-BFTRG1 delivers superior voltage accuracy (±25mV vs. ±50mV), lower operating current (3.0µA vs. 5.5µA), and factory-enabled 0V charge-making it optimal for high-reliability, long-shelf-life, and field-serviceable Li+ packs.
Availability
AP9101CAK-BFTRG1 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headset batteries, medical portable monitors, and smart wearable sensors requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/Green compliance.
Supply support for AP9101CAK-BFTRG1 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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in IATF 16949-certified facilities.
The AP9101C product line targets cost-sensitive, high-volume Li+ battery protection applications demanding precision thresholds, ultra-low power, and minimal external components-specifically optimized for 1-cell consumer and industrial portable devices.
FAQ
What is the function of the VM pin on the AP9101CAK-BFTRG1?
The VM pin serves as the current-sense input for detecting discharge overcurrent, charge overcurrent, and short-circuit conditions. It measures the voltage drop across an external sense resistor between the battery's P− terminal and the load/charger path. Internal comparators compare this voltage against programmable thresholds (e.g., 0.150V for discharge overcurrent), triggering DO or CO gate shutdown with fixed delay timing.
Does the AP9101CAK-BFTRG1 support automatic recovery from overdischarge without a charger?
No-the AP9101CAK-BFTRG1 variant has selectable Power-Down mode enabled (per ordering code "BF"), meaning it enters ultra-low-current sleep upon overdischarge and requires external charger connection to wake up and resume normal operation. Auto-Wake-Up functionality is only available in variants with "A" suffix (e.g., AP9101CAK-AFTRG1), not this part number.
Can the overcharge detection voltage be adjusted externally?
No-overcharge detection voltage is factory-programmed and fixed per part number; AP9101CAK-BFTRG1 is specified at 4.375V ±25mV. Diodes does not provide external resistor-divider adjustment or EEPROM configuration. Selection among 21 pre-set voltage combinations (e.g., 4.200V to 4.500V) must occur at order time using the ordering code matrix in DS37771 Rev. 8–3.
What is the maximum allowable voltage between VDD and VM pins?
The absolute maximum rating is 30V between VDD and VM pins, verified per Diodes' DS37771 Rev. 8–3 Absolute Maximum Ratings table. This enables direct connection to high-voltage chargers (e.g., 12V wall adapters) without external clamping diodes or Zener regulators, simplifying front-end protection design.
AP9101CAK-BFTRG1 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-BFTRG1 FAQ
1.How can I place an order for AP9101CAK-BFTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-BFTRG1 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-BFTRG1 reliable?
The price and inventory of AP9101CAK-BFTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-BFTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-BFTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-BFTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-BFTRG1?
AP9101CAK-BFTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-BFTRG1 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-BFTRG1?
For technical support, including AP9101CAK-BFTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-BFTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-BFTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-BFTRG1 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-BFTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-BFTRG1?
All AP9101CAK-BFTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-BFTRG1, 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-BFTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-BFTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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