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Diodes Incorporated AP9101CAK-AETRG1
- Part No.:
- AP9101CAK-AETRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-AETRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,833
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Product details
Overview
AP9101CAK-AETRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.200V ±25mV, overdischarge release at 3.000V ±35mV, discharge overcurrent detection at 0.300V ±15mV, short-circuit detection at 0.550V ±100mV, and integrated 0V battery charge enable. It operates with 3.0µA typical current in active mode and supports SOT25 packaging for compact battery management systems in portable electronics.
For engineers reviewing the AP9101CAK-AETRG1 datasheet, AP9101CAK-AETRG1 pinout, AP9101CAK-AETRG1 application, or AP9101CAK-AETRG1 equivalent, this device is selected for precise voltage thresholds, selectable power-down mode, fixed internal delay timing, high-voltage VM–VDD tolerance (30V), and factory-configured auto-release overcharge protection in space-constrained Li+ pack designs.
Technical Context
The AP9101CAK-AETRG1 implements independent analog comparators for VDD–VSS (cell voltage) and VM–VSS (current-sense voltage), each feeding into logic-controlled delay timers to trigger CO/DO gate outputs. Its built-in RVMD/RVMS resistive networks enable automatic status recovery without external components during overdischarge or short-circuit events.
It integrates an overvoltage charger detector (8.0V fixed, ±2V accuracy) that directly controls CO without delay, and supports factory-set 0V battery charging via internal configuration - enabling recharge of deeply depleted cells without external wake-up circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.200V ±25mV - sets precise upper cell voltage limit before disabling charge path |
| Overdischarge Release Voltage | 3.000V ±35mV - defines minimum safe cell voltage for re-enabling discharge after protection trip |
| Discharge Overcurrent Threshold | 0.300V ±15mV - detects excessive load current via sense resistor voltage drop |
| Short-Circuit Detection Voltage | 0.550V ±100mV - triggers immediate DO shutdown for sub-100ms fault conditions |
| Active Current Consumption | 3.0µA typ at 3.5V - enables multi-year runtime in always-on battery monitoring |
| VM–VDD Absolute Max | 30V - supports direct connection to high-voltage chargers without level-shifting |
| 0V Battery Charge | Enabled - allows charger to initiate recovery of fully depleted cells without external bias |
| Power-Down Mode | Selectable - reduces quiescent current to 0.1µA typ when enabled, requiring charger to exit |
Pinout & Package
AP9101CAK-AETRG1 is packaged in SOT25 (5-pin), with pin 1 marked and lead-free, RoHS-compliant 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 circuits |
| VDD | Positive supply input | Connects to battery positive; powers internal circuitry and drives CO/DO gate outputs |
| VSS | Negative supply reference | System ground reference for all voltage comparisons and logic operation |
| DO | Discharge control output | Drives gate of external N-channel MOSFET to interrupt discharge path during faults |
| CO | Charge control output | Drives gate of external N-channel MOSFET to interrupt charge path during overcharge or charger overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Built-in fixed delay timers | Eliminates need for external capacitors - simplifies BOM and improves timing consistency across temperature |
| High-accuracy voltage detection | ±25mV overcharge detection tolerance ensures tight cell voltage control without calibration |
| Integrated 0V battery charge function | Enables automatic recovery of self-discharged cells without external wake-up circuitry or manual intervention |
| Selectably enabled power-down mode | Reduces system standby current to 0.1µA typ, extending shelf life of sealed battery packs |
| Charger overvoltage protection | 8.0V fixed detection (±2V) on VDD–VM disables charge path instantly - prevents damage from faulty chargers |
Applications
| Smart Wearables | Bluetooth Headsets |
|---|---|
|
Use Scenario: Compact Li+ battery pack powering ultra-low-power BLE sensor nodes with multi-month standby. IC Role / Device Role / Timing Role: Primary protection controller enforcing 4.200V overcharge cutoff and 3.000V overdischarge release to preserve cycle life. Use Value: Enables reliable 0V battery recovery and <3µA active current draw - critical for maintenance-free deployment. |
Use Scenario: Dual-cell (1S) Li-polymer pack in noise-cancelling earbuds with frequent partial charge cycles. IC Role / Device Role / Timing Role: Real-time current sensing via VM pin to detect >0.300V discharge overcurrent and prevent thermal runaway. Use Value: Fixed 0.550V short-circuit threshold ensures sub-10µs response - protects FETs and PCB traces during accidental shorts. |
| Portable Medical Monitors | Wireless Power Tools |
|
Use Scenario: Single-cell Li+ pack in FDA-cleared glucose meters requiring guaranteed safety compliance and long shelf life. IC Role / Device Role / Timing Role: Enforces strict 2.500V overdischarge detection with ±35mV accuracy to avoid irreversible cell damage. Use Value: Selectable power-down mode extends unopened shelf life beyond 2 years while maintaining RoHS/Green certification. |
Use Scenario: High-drain 1S Li+ pack in cordless screwdrivers subjected to intermittent 10A+ discharge pulses. IC Role / Device Role / Timing Role: Uses VM–VSS differential sensing to distinguish transient surges from true overcurrent events via configurable tDOC delay. Use Value: 30V VM–VDD rating allows direct integration with 12V DC fast-charging docks without isolation components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP9101CABTRG1 | Higher overcharge detection (4.425V) and release (4.225V); same VDL/VDU and VDOC | Suitable for higher-voltage Li+ chemistries (e.g., LiCoO₂ with wider VOC range) | Select when tighter top-end voltage margin is required without changing layout or sense resistor |
| AP9101CAK-ADTRG1 | Lower discharge overcurrent threshold (0.120V vs. 0.300V); identical VCU/VCL/VDL/VDU | Better suited for low-resistance battery paths where 0.300V would miss early-stage overcurrent | Choose for high-capacity 1S packs with <5mΩ internal resistance needing finer current resolution |
Compared with AP9101CAK-AETRG1, ABTRG1 raises overcharge limits for higher-voltage cells, while ADTRG1 lowers overcurrent sensitivity for precision current monitoring - neither offers the 0.300V/0.550V combination optimized for general-purpose high-drain consumer devices.
Availability
AP9101CAK-AETRG1 is available at Aetrix Electronics and suitable for smart wearables, Bluetooth headsets, portable medical monitors, and wireless power tools requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.
Supply support for AP9101CAK-AETRG1 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 ICs, with design and manufacturing facilities 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+ and Li-polymer battery packs in consumer and portable industrial applications.
FAQ
What is the function of the VM pin on AP9101CAK-AETRG1?
The VM pin serves as the current-sense input terminal, measuring voltage drop across an external sense resistor between battery negative and system ground. It enables detection of discharge overcurrent (≥0.300V), short-circuit (≥0.550V), and charge overcurrent (≤−0.100V), triggering DO or CO shutdown with programmable delay times.
Does AP9101CAK-AETRG1 support automatic recovery from overdischarge without a charger?
No - AP9101CAK-AETRG1 uses the standard power-down mode (not auto-wake-up). Recovery from overdischarge requires connecting a charger to raise battery voltage above 3.000V and reset the protection latch; no internal wake-up timer or load-based recovery is implemented in this variant.
How does the 0V battery charge function operate in AP9101CAK-AETRG1?
The 0V battery charge function is factory-enabled and allows the IC to accept charging current even when battery voltage reads 0V due to self-discharge. It activates when VM voltage exceeds 1.2V (typ), permitting the charger to begin replenishing the cell without external biasing or manual reset.
Can AP9101CAK-AETRG1 be used with a 2-cell battery pack?
No - AP9101CAK-AETRG1 is designed exclusively for 1-cell Li+ or Li-polymer configurations. Its overcharge detection (4.200V) and absolute maximum VDD–VSS rating (12V) do not support series-connected cells; use AP9211 or AP9221 series for 2S applications.
AP9101CAK-AETRG1 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-AETRG1 FAQ
1.How can I place an order for AP9101CAK-AETRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-AETRG1 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-AETRG1 reliable?
The price and inventory of AP9101CAK-AETRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-AETRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-AETRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-AETRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-AETRG1?
AP9101CAK-AETRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-AETRG1 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-AETRG1?
For technical support, including AP9101CAK-AETRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-AETRG1 requirements.
6.How does Aetrix verify that AP9101CAK-AETRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-AETRG1 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-AETRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-AETRG1?
All AP9101CAK-AETRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-AETRG1, 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-AETRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-AETRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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