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Diodes Incorporated AP9101CAK-BWTRG1
- Part No.:
- AP9101CAK-BWTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-BWTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:4,317
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Product details
Overview
AP9101CAK-BWTRG1 from Diodes Incorporated is a single-chip lithium-ion/polymer battery protection IC designed for 1-cell packs. It integrates high-precision voltage and current detection (±25 mV overcharge, ±35 mV overdischarge, ±15 mV discharge overcurrent), fixed-time delay circuitry, and dual MOSFET gate control (CO/DO) to autonomously manage charge/discharge safety in portable power systems.
For engineers reviewing the AP9101CAK-BWTRG1 datasheet, AP9101CAK-BWTRG1 pinout, AP9101CAK-BWTRG1 application, or AP9101CAK-BWTRG1 equivalent, this device supports critical battery safety functions including overvoltage charger detection (8.0 V typ), 0V battery charge enablement, selectable power-down mode, and short-circuit protection with sub-microsecond response.
Technical Context
The AP9101CAK-BWTRG1 implements independent analog comparators for overcharge (VCU = 4.375 V), overdischarge (VDL = 2.500 V), discharge overcurrent (VDOC = 0.150 V), and short-circuit (VSHORT = 0.700 V), each with configurable hysteresis and ±20% delay time accuracy. Its logic circuit directly drives external N-channel MOSFETs via CO and DO pins without external timing capacitors.
It features a high-voltage CMOS process enabling 30 V VDD–VM rating, internal RVMD/RVMS resistors (300 kΩ / 30 kΩ typ) for VM sensing, and factory-configured options: auto-release overcharge protection, 0V battery charge permission, and selectable power-down mode - all confirmed in the ordering code "AK" and suffix "BWTRG1".
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375 V ±25 mV - sets precise upper cell voltage limit before disabling charge path |
| Overdischarge Detection Voltage | 2.500 V ±35 mV - prevents deep discharge damage to Li+ cell anode structure |
| Discharge Overcurrent Threshold | 0.150 V ±15 mV - detects excessive load current via sense resistor voltage drop |
| Short-Circuit Detection Voltage | 0.700 V ±100 mV - triggers sub-1 µs DO shutdown for hard shorts at pack terminals |
| Operating Current (Typ) | 3.0 µA at 3.5 V - enables multi-year runtime on standby battery capacity |
| Power-Down Current (Typ) | 0.01 µA - reduces leakage during storage or transport without external wake-up circuitry |
| VDD–VM Absolute Max | 30 V - supports robust operation across charger transients and reverse-polarity fault conditions |
Pinout & Package
AP9101CAK-BWTRG1 is packaged in SOT25 (5-pin) - a surface-mount, lead-free, RoHS-compliant package with 0.95 mm pitch and thermal pad capability. Pin 1 marked with dot; standard JEDEC MO-178 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current Sense Input | Monitors voltage drop across external sense resistor (R2) to detect charge/discharge current and short circuits |
| VDD | Positive Supply Input | Connects to battery positive terminal; powers internal circuitry and provides reference for CO/DO drive |
| VSS | Negative Supply Input | Ground reference for all internal comparators and logic; tied to battery negative |
| DO | Discharge Control Output | Drives gate of discharge-side N-MOSFET; low = disable discharge path during overdischarge or overcurrent |
| CO | Charge Control Output | Drives gate of charge-side N-MOSFET; low = disable charge path during overcharge, overvoltage charger, or charge overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Fixed Delay Timing | Eliminates external timing capacitors - reduces BOM count and PCB area in compact battery packs |
| 0V Battery Charge Enable | Allows safe reactivation of deeply discharged cells (0 V) using standard CC/CV chargers without manual intervention |
| Selectable Power-Down Mode | Reduces quiescent current to 0.01 µA when VM floats - extends shelf life and prevents parasitic drain during storage |
| Overvoltage Charger Detection | 8.0 V ±2 V threshold monitors VDD–VM to shut down charging if input exceeds safe adapter voltage |
| Auto-Release Overcharge Protection | Automatically restores charge path when cell voltage drops below 4.175 V - no external reset required |
Applications
| Smartphone Battery Pack | Wireless Earbud Case |
|---|---|
Use Scenario: Single-cell Li-ion pack powering main SoC and audio codecs with tight space constraints. IC Role / Device Role / Timing Role: Primary protection controller monitoring cell voltage, discharge current, and short events; executes <1 µs DO shutdown on short detection. Use Value: Prevents thermal runaway during accidental tip-short while enabling ultra-low standby current (<3 µA) for multi-week case standby time. |
Use Scenario: Compact 1S battery in charging case managing simultaneous earbud charging and case self-recharge. IC Role / Device Role / Timing Role: Dual-role protector: enforces 2.5 V overdischarge cutoff during case discharge, and 4.375 V overcharge cutoff during earbud charging cycles. Use Value: Guarantees consistent cycle life across 500+ charge cycles by maintaining voltage tolerances within ±25 mV and supporting 0V recovery after long-term storage. |
| Bluetooth Tracker | Portable Medical Sensor |
Use Scenario: Coin-cell-sized tracker with GPS and BLE, operating intermittently for >1 year on one charge. IC Role / Device Role / Timing Role: Low-power guardian: enters 0.01 µA power-down mode when VM floats (no load), wakes only on charger attach or voltage rise. Use Value: Extends usable shelf life to 24 months by eliminating microamp-level leakage paths that would otherwise deplete the cell pre-deployment. |
Use Scenario: Disposable wearable sensor monitoring vital signs, requiring FDA-aligned safety margins and zero field failures. IC Role / Device Role / Timing Role: Safety-critical protector: uses ±35 mV overdischarge accuracy and ±100 mV short-detection tolerance to meet IEC 62368-1 transient fault coverage. Use Value: Meets medical-grade reliability requirements with built-in hysteresis (0.4 V typ) preventing oscillatory tripping near threshold boundaries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Seiko Instruments S-8261AAL-M6T1U | Fixed 4.25 V overcharge threshold; no overvoltage charger detection; 0.1 µA power-down current | Lacks VDD–VM monitoring; unsuitable for USB PD or multi-adapter environments where charger overvoltage risk exists | Choose only if design uses fixed-voltage wall adapters and requires lowest possible cost, not enhanced charger safety |
| Ricoh RP502K001B-TR-F | Supports 2-cell configuration; higher 5 µA operating current; no 0V charge function; ±50 mV overcharge accuracy | Designed for stacked-cell applications; lacks single-cell optimization and deep-discharge recovery capability | Select only for 2S battery systems where inter-cell balancing is managed externally and 0V recovery is unnecessary |
Compared with S-8261AAL-M6T1U and RP502K001B-TR-F, AP9101CAK-BWTRG1 uniquely combines 0V battery charge enablement, 8.0 V overvoltage charger detection, and ±25 mV overcharge accuracy - making it optimal for consumer electronics requiring both safety robustness and long-term storage resilience.
Availability
AP9101CAK-BWTRG1 is available at Aetrix Electronics and suitable for smartphone battery packs, wireless earbud cases, Bluetooth trackers, and portable medical sensors requiring stable component supply, long-lifecycle support, and guaranteed RoHS/Green compliance.
Supply support for AP9101CAK-BWTRG1 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 ISO/TS 16949-certified manufacturing and broad distribution infrastructure.
The AP9101C product line delivers integrated battery protection ICs optimized for space-constrained, single-cell Li-ion/polymer applications - emphasizing precision voltage thresholds, ultra-low quiescent current, and factory-configurable safety options.
FAQ
What is the function of the VM pin on AP9101CAK-BWTRG1?
The VM pin serves as the current-sense input terminal, measuring voltage drop across an external sense resistor (R2) between P− and battery negative. It enables detection of discharge overcurrent, charge overcurrent, and short-circuit events. Internal RVMS (30 kΩ typ) connects VM to VSS during overcurrent faults, pulling VM low to sustain DO/CO shutdown until fault clears.
Does AP9101CAK-BWTRG1 support automatic recovery from overdischarge?
Yes - AP9101CAK-BWTRG1 supports auto-wake-up from overdischarge status. When the battery voltage rises above the overdischarge release voltage (2.900 V), the device automatically restores DO output high to re-enable discharge, without requiring external reset or charger connection. This behavior is enabled by its factory-set "A" option code.
How does the overvoltage charger detection feature work?
The overvoltage charger detection monitors the voltage difference between VDD and VM pins. If this exceeds 8.0 V (±2 V), the CO pin immediately goes low to disable the charge MOSFET. Recovery occurs when VDD–VM falls below 7.3 V (±2 V). No delay is applied - response is instantaneous to prevent damage from faulty or mismatched chargers.
Can AP9101CAK-BWTRG1 be used with lithium iron phosphate (LiFePO₄) cells?
No - AP9101CAK-BWTRG1 is specifically calibrated for lithium-ion and lithium-polymer chemistries with nominal 3.6–3.7 V and full-charge 4.2–4.4 V profiles. Its 2.500 V overdischarge threshold and 4.375 V overcharge threshold fall outside the safe operating range of LiFePO₄ (2.0–3.65 V), risking premature cutoff or insufficient protection.
AP9101CAK-BWTRG1 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-BWTRG1 FAQ
1.How can I place an order for AP9101CAK-BWTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-BWTRG1 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-BWTRG1 reliable?
The price and inventory of AP9101CAK-BWTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-BWTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-BWTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-BWTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-BWTRG1?
AP9101CAK-BWTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-BWTRG1 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-BWTRG1?
For technical support, including AP9101CAK-BWTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-BWTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-BWTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-BWTRG1 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-BWTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-BWTRG1?
All AP9101CAK-BWTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-BWTRG1, 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-BWTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-BWTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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