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Diodes Incorporated AP9101CAK-CLTRG1
- Part No.:
- AP9101CAK-CLTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-CLTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,863
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Product details
Overview
AP9101CAK-CLTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.375 V ±25 mV, overdischarge detection at 2.500 V ±35 mV, discharge overcurrent detection at 0.150 V ±15 mV, and built-in 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 charging and selectable power-down mode.
For engineers reviewing the AP9101CAK-CLTRG1 datasheet, AP9101CAK-CLTRG1 pinout, AP9101CAK-CLTRG1 application, or AP9101CAK-CLTRG1 equivalent, this device is selected for precision voltage monitoring, low-quiescent-current battery safety systems, and compact 1-cell Li+ pack designs requiring integrated overvoltage charger detection (8.0 V) and short-circuit protection (0.7 V).
Technical Context
The AP9101CAK-CLTRG1 implements independent analog comparators for overcharge (VCU), overdischarge (VDL), discharge overcurrent (VDOC), charge overcurrent (VCOC), and short-circuit (VSHORT) detection, each with programmable thresholds and ±20% delay timing accuracy. Its logic circuitry drives CO and DO outputs to control external high-side and low-side N-MOSFETs in series with the battery path.
It integrates internal pull-up (RVMD) and pull-down (RVMS) resistors for VM pin biasing during fault states, enabling automatic recovery from overdischarge and short-circuit conditions without external components. The device operates across –40°C to +85°C with supply voltage from 1.5 V to 5.5 V and supports up to 30 V differential between VDD and VM pins.
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 using sense resistor voltage drop |
| Short-Circuit Detection Voltage | 0.700 V ±100 mV - triggers sub-microsecond shutdown for hard shorts at battery terminals |
| Operating Current (Typ) | 3.0 µA at 3.5 V - enables multi-year runtime in always-connected battery packs |
| Power-Down Current (Typ) | 0.01 µA - reduces self-discharge impact during long-term storage |
| VM–VDD Absolute Max | 30 V - supports high-voltage charger input monitoring without external level shifters |
Pinout & Package
AP9101CAK-CLTRG1 is packaged in SOT25 (5-pin) with lead-free, RoHS-compliant construction. Pin 1 is marked; package dimensions conform to JEDEC MO-178AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current Sense Input | Monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short circuits |
| VDD | Positive Supply Input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO outputs |
| VSS | Negative Supply Reference | Connects to battery negative terminal; serves as ground reference for all analog comparators |
| DO | Discharge Control Output | Drives gate of external low-side N-MOSFET to interrupt discharge path during faults |
| CO | Charge Control Output | Drives gate of external high-side N-MOSFET to interrupt charge path during overcharge or overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Fixed Delay Timing | No external capacitor needed - reduces BOM count and PCB area in space-constrained battery modules |
| 0V Battery Charge Enable | Factory-configured option allowing safe recharge of fully depleted cells without manual intervention |
| Selectable Power-Down Mode | Reduces quiescent current to 0.01 µA when battery voltage falls below overdischarge threshold |
| Overvoltage Charger Detection | 8.0 V ±2 V threshold protects against faulty or mismatched chargers without added components |
| High-Accuracy Hysteresis | Programmable overcharge hysteresis (0.1–0.4 V) prevents oscillation near trip points during marginal conditions |
Applications
| Smart Wearables | Bluetooth Headsets |
|---|---|
|
Use Scenario: Compact Li+ battery pack powering BLE-enabled earbuds with multi-year shelf life and repeated charge cycles. IC Role / Device Role / Timing Role: Primary protection controller managing charge/discharge paths, detecting overcurrent during peak audio playback, and enforcing 2.5 V cutoff to preserve cycle life. Use Value: Enables 0.01 µA power-down mode during storage, extending shelf life beyond 24 months without capacity loss. |
Use Scenario: Single-cell Li+ pack in noise-cancelling headphones requiring robust short-circuit immunity during frequent cable insertion/removal. IC Role / Device Role / Timing Role: Fault monitor triggering 0.7 V short-detection within 1.2 µs to prevent thermal runaway during connector arcing. Use Value: Eliminates need for discrete TVS diodes or current-limiting ICs, reducing solution size by 35% versus discrete protection schemes. |
| Portable Medical Sensors | IoT Asset Trackers |
|
Use Scenario: FDA-classified wearable glucose monitor operating continuously for 7 days per charge in variable ambient temperatures. IC Role / Device Role / Timing Role: Precision voltage supervisor ensuring ±25 mV overcharge detection accuracy across –20°C to +60°C to meet IEC 62368-1 safety compliance. Use Value: Maintains 3.0 µA typical operating current at 3.5 V, contributing <0.5% daily self-discharge in sealed medical enclosures. |
Use Scenario: GPS-enabled logistics tracker mounted on shipping containers exposed to wide temperature swings and vibration-induced contact bounce. IC Role / Device Role / Timing Role: Dual-threshold overdischarge protector (2.5 V detection / 2.9 V release) preventing false lockout during transient voltage dips under load. Use Value: Built-in hysteresis eliminates need for external RC networks, improving reliability in high-vibration environments where solder joints may fatigue. |
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-8261AAB-M6T1U | Fixed 4.25 V overcharge threshold; no 0V charge function; 5-pin SOT-23 package | Lacks configurable overvoltage charger detection (8.0 V) and short-circuit response time <1.5 µs | Choose for cost-sensitive, non-rechargeable Li+ applications where 0V recovery is unnecessary |
| Ricoh RP505K001B-TR-F | Supports dual-cell configuration; higher 5.5 V VDD max; requires external capacitor for delay timing | Designed for 2S battery stacks; not pin-compatible; adds 0.5 mm² footprint due to extra capacitor | Choose only when scaling to 2-cell architecture; avoid for 1S space-constrained designs |
Compared with S-8261AAB-M6T1U and RP505K001B-TR-F, AP9101CAK-CLTRG1 delivers tighter voltage accuracy (±25 mV vs ±50 mV), integrated short-circuit protection without external components, and factory-configurable 0V charge-making it optimal for high-reliability, miniaturized 1S Li+ systems.
Availability
AP9101CAK-CLTRG1 is available at Aetrix Electronics and suitable for smart wearables, portable medical sensors, Bluetooth headsets, and IoT asset trackers requiring stable component supply and long-term lifecycle support.
Supply support for AP9101CAK-CLTRG1 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 solutions for power management, signal integrity, and protection applications.
The AP9101C product line targets compact, high-accuracy battery protection for consumer and industrial 1-cell Li+ systems, emphasizing ultra-low power consumption, integrated fault timing, and simplified system-level design.
FAQ
What is the function of the VM pin on AP9101CAK-CLTRG1?
The VM pin serves as the current-sense input that monitors voltage drop across an external sense resistor between the battery's P– terminal and load ground. It enables detection of discharge overcurrent, charge overcurrent, and short-circuit events. Internal RVMS and RVMD resistors connect to VM during fault states to stabilize sensing and enable automatic recovery without external components.
Does AP9101CAK-CLTRG1 support both charge and discharge MOSFET control?
Yes. The CO pin controls the gate of an external high-side N-channel MOSFET in the charge path, while the DO pin controls a low-side N-channel MOSFET in the discharge path. This dual-gate architecture allows independent interruption of charge and discharge currents, supporting auto-release overcharge protection and overdischarge recovery via charger reconnection or voltage rise.
How does the 0V battery charge function operate in AP9101CAK-CLTRG1?
The 0V battery charge function is factory-configured and enabled in this variant. When the battery voltage reaches 0 V due to self-discharge, the IC permits the charger to apply voltage and initiate recharge once the charger voltage exceeds 1.2 V at the VDD pin. Without this feature, the device would block charging until battery voltage rose above ~2.0 V, risking permanent cell damage.
What is the maximum allowable voltage between VDD and VM pins?
The absolute maximum rating between VDD and VM is 30 V, verified per Diodes Incorporated's DS37771 Rev. 8–3. This rating enables direct monitoring of high-voltage charger inputs (e.g., 12 V wall adapters) without external voltage dividers or level shifters, simplifying system design for universal input battery packs.
AP9101CAK-CLTRG1 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-CLTRG1 FAQ
1.How can I place an order for AP9101CAK-CLTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-CLTRG1 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-CLTRG1 reliable?
The price and inventory of AP9101CAK-CLTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-CLTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-CLTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-CLTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-CLTRG1?
AP9101CAK-CLTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-CLTRG1 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-CLTRG1?
For technical support, including AP9101CAK-CLTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-CLTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-CLTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-CLTRG1 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-CLTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-CLTRG1?
All AP9101CAK-CLTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-CLTRG1, 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-CLTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-CLTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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