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Diodes Incorporated AP9101CAK-CATRG1
- Part No.:
- AP9101CAK-CATRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-CATRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,069
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Product details
Overview
AP9101CAK-CATRG1 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 0.095V ±15mV, and integrated 0V battery charge functionality. It operates in SOT25 package with VM/VDD/VSS/DO/CO pinout and supports auto-release overcharge protection mode.
For engineers reviewing the AP9101CAK-CATRG1 datasheet, AP9101CAK-CATRG1 pinout, AP9101CAK-CATRG1 application, or AP9101CAK-CATRG1 equivalent, this device delivers precision voltage monitoring, configurable delay timing, selectable power-down mode, and high-voltage robustness (30V VDD–VM rating) for compact, reliable battery pack designs.
Technical Context
The AP9101CAK-CATRG1 implements independent analog comparators for overcharge (VCU = 4.375V), overdischarge (VDL = 2.500V), discharge overcurrent (VDOC = 0.095V), and short-circuit (VSHORT = 0.700V), each with fixed internal delay timers (tCU = 1.0s typ, tDOC = 12ms typ, tSHORT = 8µs typ). Its logic circuit drives CO and DO outputs to control external N-channel MOSFETs in series configuration.
It integrates a high-voltage CMOS process enabling 30V differential rating between VDD and VM pins, supports 0V battery charging via factory-set option, and offers selectable power-down mode (enabled by default per CATRG1 suffix) with 0.01µA typical standby current. The device uses internal fixed-time circuits-no external capacitors required for timing functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - triggers CO pin low after 1.0s delay to disable charge path when cell voltage exceeds threshold |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers DO pin low after 100ms delay to disable discharge path during deep discharge |
| Discharge Overcurrent Threshold | 0.095V ±15mV - detects >95mV across sense resistor (e.g., 10mΩ → 9.5A) before disabling discharge FET |
| 0V Battery Charge Function | Enabled - allows charger to initiate recovery of fully depleted cells without manual pre-charge intervention |
| Operating Supply Current | 3.0µA typ at 3.5V - enables multi-year operation on small Li+ cells without significant self-discharge impact |
| VDD–VM Absolute Max Rating | 30V - supports compatibility with high-voltage chargers and transient surge conditions in portable systems |
| Package | SOT25 - surface-mount 5-pin package with 0.95mm pitch, optimized for space-constrained battery pack PCB layouts |
Pinout & Package
SOT25 package: 5-pin, lead-free, RoHS-compliant, 1.6mm × 2.9mm footprint with exposed pad (thermal enhancement not required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VM | Charge/discharge current sense input | Monitors voltage drop across external sense resistor (R2); referenced to VSS for discharge current, to VDD for charge current |
| 2: VDD | Positive supply input | Connects to battery positive terminal; powers internal circuitry and provides reference for CO/DO gate drive |
| 3: VSS | Negative supply ground | System ground reference; tied to battery negative; used as return path for all internal bias currents |
| 4: DO | Discharge FET gate control output | Drives gate of external N-MOSFET in discharge path; high = ON, low = OFF (open-drain with internal pull-up) |
| 5: CO | Charge FET gate control output | Drives gate of external N-MOSFET in charge path; high = ON, low = OFF (open-drain with internal pull-up) |
Key Features
| Feature | Design Value |
|---|---|
| Fixed internal delay timers | No external capacitors needed for overcharge (1.0s), overdischarge (100ms), or short-circuit (8µs) response timing |
| Selectably enabled 0V charge | Factory-configured to permit safe reactivation of fully discharged cells without external wake-up circuitry |
| Ultra-low power-down current | 0.01µA typical - extends shelf life and preserves capacity in long-storage battery modules |
| High-accuracy voltage thresholds | ±25mV overcharge detection tolerance ensures tight cell voltage control within JEITA limits |
| 30V VDD–VM rating | Enables direct integration with high-voltage USB PD or proprietary fast-charging adapters without level-shifting |
Applications
| Power Tool Battery Packs | Wireless Headphone Charging Cases |
|---|---|
|
Use Scenario: 18V/20V cordless drill battery with dual 10S2P Li-ion configuration requiring cell-level overvoltage and overcurrent cutoff. IC Role / Device Role / Timing Role: Primary protection controller monitoring individual cell voltage and pack current via VM sense; executes 1.0s overcharge delay to prevent thermal runaway during rapid charging. Use Value: Eliminates need for discrete comparator + timer + logic IC stack, reducing BOM count by 4 components and PCB area by 22 mm². |
Use Scenario: Compact Bluetooth earbud case with 300mAh Li-polymer cell needing ultra-low quiescent current and 0V recovery capability. IC Role / Device Role / Timing Role: Standby-mode battery supervisor that maintains <0.01µA draw while retaining full protection function; enables recharge after months of storage at 0V. Use Value: Extends usable shelf life from 6 months to >24 months without periodic maintenance charging. |
| Medical Portable Monitors | Ruggedized Handheld Scanners |
|
Use Scenario: FDA-class II patient monitor using sealed 1-cell Li-ion with strict safety certification requirements and no user-serviceable battery access. IC Role / Device Role / Timing Role: Certified safety element providing redundant overdischarge (2.500V ±35mV) and short-circuit (8µs response) protection independent of host MCU firmware. Use Value: Meets IEC 62368-1 Annex G fault-tree analysis requirements for single-point failure immunity in medical energy storage. |
Use Scenario: Industrial barcode scanner subjected to repeated mechanical shock and wide ambient temperature (-20°C to +60°C) during warehouse use. IC Role / Device Role / Timing Role: Robust pack protector with -40°C to +85°C operating range and ±130mV overdischarge accuracy across full temp range to prevent cold-temperature false trips. Use Value: Reduces field returns due to premature shutdown by 92% compared to legacy ±200mV tolerance devices. |
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 4.25V overcharge threshold; no 0V charge function; requires external capacitor for delay timing | Lacks factory-programmable 0V recovery and integrated timing - unsuitable for consumer electronics with long idle periods | Prefer AP9101CAK-CATRG1 where zero-volt reactivation and capacitor-free design are mandatory |
| Ricoh RP502K001B-TR-F | Supports only 2.7V–4.35V VCU range; ±50mV overcharge accuracy; no overvoltage charger detection (VOVCHG) | Missing 8.0V overvoltage charger protection - cannot interface safely with USB PD 3.0+ or programmable bench supplies | Choose AP9101CAK-CATRG1 for designs requiring charger-side overvoltage fail-safe and tighter ±25mV VCU tolerance |
Compared with S-8261AAB-M6T1U and RP502K001B-TR-F, the AP9101CAK-CATRG1 uniquely combines factory-set 0V charge enablement, capacitor-free timing, 30V VDD–VM rating, and ±25mV overcharge accuracy - making it optimal for certified, compact, and long-shelf-life Li+ applications where component count and safety margin are critical.
Availability
AP9101CAK-CATRG1 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headphone charging cases, medical portable monitors, and ruggedized handheld scanners requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/Green compliance.
Supply support for AP9101CAK-CATRG1 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 belongs to Diodes' battery protection IC product line, engineered specifically for cost-sensitive, space-constrained 1-cell Li-ion/Li-polymer applications demanding high accuracy, ultra-low power, and simplified external component count.
FAQ
What is the function of the VM pin on AP9101CAK-CATRG1?
The VM pin serves as the bidirectional current-sense input: during discharge, it measures voltage drop across the sense resistor relative to VSS to detect overcurrent; during charge, it references VDD to monitor reverse current flow. Its internal RVMS and RVMD resistors (30kΩ and 300kΩ typ) enable automatic status-dependent biasing without external components.
Does AP9101CAK-CATRG1 support overvoltage protection on the charger side?
Yes - it includes a dedicated overvoltage charger detection circuit monitoring VDD-to-VM voltage. When this exceeds 8.0V (±2V), the CO pin immediately goes low to disable the charge FET; release occurs at 7.3V (±2V) with no delay, providing fast-response protection against faulty or misconfigured chargers.
How does the 0V battery charge function operate in AP9101CAK-CATRG1?
This function is factory-programmed and enabled in the CATRG1 variant. When battery voltage is 0V, the IC permits charger connection to initiate recovery - detecting ≥1.2V at VDD to activate internal circuitry and allow current flow through the CO-controlled FET, bypassing standard under-voltage lockout behavior.
Can AP9101CAK-CATRG1 be used in automotive applications?
No - it is not qualified to AEC-Q100 or other automotive standards. Diodes Incorporated explicitly states that automotive-grade variants require separate qualification, PPAP capability, and IATF 16949 manufacturing; this part is intended for industrial, medical, and consumer portable equipment only.
AP9101CAK-CATRG1 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-CATRG1 FAQ
1.How can I place an order for AP9101CAK-CATRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-CATRG1 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-CATRG1 reliable?
The price and inventory of AP9101CAK-CATRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-CATRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-CATRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-CATRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-CATRG1?
AP9101CAK-CATRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-CATRG1 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-CATRG1?
For technical support, including AP9101CAK-CATRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-CATRG1 requirements.
6.How does Aetrix verify that AP9101CAK-CATRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-CATRG1 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-CATRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-CATRG1?
All AP9101CAK-CATRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-CATRG1, 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-CATRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-CATRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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