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Diodes Incorporated AP9101CK-ABTRG1
- Part No.:
- AP9101CK-ABTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CK-ABTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,766
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Product details
Overview
AP9101CK-ABTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, featuring overcharge detection at 4.425 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. It controls external N-channel MOSFETs via DO and CO pins to protect against voltage, current, and short-circuit faults in portable power systems.
For engineers reviewing the AP9101CK-ABTRG1 datasheet, AP9101CK-ABTRG1 pinout, AP9101CK-ABTRG1 application, or AP9101CK-ABTRG1 equivalent, this device supports precise, low-power battery safety management with selectable 0V charge and power-down mode-critical for space-constrained, high-reliability Li+ pack designs.
Technical Context
The AP9101CK-ABTRG1 integrates independent voltage comparators for overcharge (VCU = 4.425 V), overdischarge (VDL = 2.500 V), and overvoltage charger (VOVCHG = 8.0 V), each with configurable hysteresis and ±25–±100 mV accuracy. Its logic circuit drives CO and DO outputs to control external charge/discharge FETs based on real-time VM–VSS differential sensing.
It employs a high-voltage CMOS process enabling 30 V tolerance between VDD and VM pins, supports auto-release overcharge protection, and includes dedicated short-circuit detection (VSHORT = 0.700 V) with sub-microsecond response (tSHORT typ. 1.2 µs). Power-down mode reduces current to 0.1 µA at 1.8 V, while operation mode draws only 3.0 µA typ. at 3.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.425 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-µs shutdown for hard shorts across battery terminals |
| Operating Current (Typ.) | 3.0 µA at 3.5 V - enables multi-year runtime in always-on battery monitoring |
| Power-Down Current (Typ.) | 0.1 µA at 1.8 V - extends shelf life during storage or transport |
| VDD–VM Absolute Max | 30 V - supports robust operation under transient charger overvoltage events |
Pinout & Package
AP9101CK-ABTRG1 is packaged in SOT25 (5-pin), with pin 1 marked and lead-free, RoHS-compliant construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM (Pin 1) | Current Sense Input | Monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short circuits |
| VDD (Pin 2) | Positive Supply Input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO gate outputs |
| VSS (Pin 3) | Negative Supply Reference | Ground reference for all internal comparators and logic; tied to battery negative |
| DO (Pin 4) | Discharge Control Output | Drives gate of external discharge MOSFET; pulled low to disable discharge path during fault |
| CO (Pin 5) | Charge Control Output | Drives gate of external charge MOSFET; pulled low to disable charge path during overcharge or overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Fixed internal delay timers | Eliminates need for external capacitors-reduces BOM count and layout area |
| Selectable 0V battery charge | Enables recovery of deeply discharged cells without manual pre-charge intervention |
| Auto-release overcharge protection | Automatically re-enables charging when cell voltage drops below 4.225 V, avoiding manual reset |
| High-accuracy voltage thresholds | ±25 mV overcharge detection tolerance ensures compliance with Li+ cell voltage limits per JEITA |
| 30 V VDD–VM rating | Withstands common 12 V adapter transients without latch-up or damage |
Applications
| Smartphone Battery Pack | Wireless Earbud Case |
|---|---|
Use Scenario: Protects 3.7 V Li+ cell during fast charging and high-pulse audio playback discharge cycles. IC Role / Device Role / Timing Role: Monitors cell voltage and VM–VSS differential to independently enable/disable charge and discharge paths within <1.2 µs for short-circuit events. Use Value: Prevents thermal runaway during USB-PD 9 V adapter surges and maintains >500-cycle lifespan through precision 4.425 V overcharge cutoff. | Use Scenario: Manages dual-cell (2S) or single-cell charging in compact charging case with tight thermal constraints. IC Role / Device Role / Timing Role: Uses DO/CO dual-gate control to isolate earbuds during overdischarge (2.500 V threshold) and block reverse-current leakage during storage. Use Value: Extends shelf life via 0.1 µA power-down mode and avoids false trips using ±35 mV overdischarge accuracy across -40°C to +85°C. |
| Power Tool Battery Pack | Medical Portable Monitor |
Use Scenario: Secures 1-cell Li+ pack subjected to high-current motor bursts and mechanical shock-induced shorts. IC Role / Device Role / Timing Role: Triggers discharge MOSFET shutdown within 1.2 µs when VM–VSS exceeds 0.700 V, preventing arc-flash during terminal shorting. Use Value: Meets IEC 62133 mechanical abuse requirements via integrated short-circuit protection without external comparators. | Use Scenario: Ensures fail-safe battery operation in Class II medical devices requiring uninterrupted runtime and regulatory traceability. IC Role / Device Role / Timing Role: Provides certified overvoltage charger detection (8.0 V) to disable charging if external supply exceeds safe limits during AC adapter use. Use Value: Supports MDR Annex I compliance by eliminating risk of overcharged cell due to faulty wall adapter feedback failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Seiko Instruments S-8261AAL-M6T1U | Fixed 4.25 V overcharge threshold; no overvoltage charger detection; 0.5 µA standby current | Lacks VOVCHG monitoring and 0V charge function; suited for cost-sensitive consumer packs without adapter surge risk | Select when design uses regulated 5 V USB-only charging and requires minimal footprint without enhanced safety features |
| Ricoh RP502K001B-TR-F | Supports 2-cell configuration; higher 6 V VDD max; no selectable power-down mode; 1.2 µA operating current | Designed for stacked-cell topologies; lacks single-cell optimized thresholds and ultra-low 0.1 µA sleep state | Choose for multi-cell battery modules where shared protection across series cells is required |
Compared with S-8261AAL-M6T1U and RP502K001B-TR-F, the AP9101CK-ABTRG1 delivers tighter voltage tolerances (±25 mV), integrated overvoltage charger monitoring, and industry-leading 0.1 µA power-down current-making it optimal for high-safety, long-storage, single-cell portable medical and industrial applications.
Availability
AP9101CK-ABTRG1 is available at Aetrix Electronics and suitable for smartphone battery packs, wireless earbud cases, power tool battery modules, and portable medical monitors requiring stable component supply, full RoHS/Green compliance, and guaranteed lifecycle continuity.
Supply support for AP9101CK-ABTRG1 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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP9101C product line delivers integrated, low-quiescent-current battery protection for 1-cell Li+ systems, designed specifically to replace multi-component discrete protection circuits in space- and cost-constrained portable electronics.
FAQ
What is the function of the VM pin on the AP9101CK-ABTRG1?
The VM pin serves as the current-sense input that measures the voltage difference between itself and VSS to detect charge/discharge overcurrent and short-circuit conditions. It connects to the source terminal of the external sense resistor placed between the battery negative and system ground. Internal circuitry compares this voltage to programmable thresholds (e.g., 0.150 V for discharge overcurrent) and triggers DO or CO shutdown accordingly.
Does AP9101CK-ABTRG1 support automatic recovery from overdischarge?
Yes-the AP9101CK-ABTRG1 supports auto-wake-up functionality. When configured with power-down mode disabled (as indicated by 'B' in the part number suffix), it remains active in overdischarge state and automatically resumes normal operation once the battery voltage rises above the overdischarge release voltage (2.900 V) without requiring external charger connection or reset signal.
How does the overvoltage charger detection feature work?
The overvoltage charger detection circuit monitors the voltage between VDD and VM pins. If this voltage exceeds 8.0 V (±2 V), the IC immediately pulls CO low to disable the charge MOSFET-no delay is applied. Recovery occurs when the voltage falls below 7.3 V (±2 V), restoring CO high. This protects against faulty or unregulated chargers that could over-stress the cell.
Can AP9101CK-ABTRG1 be used with lithium iron phosphate (LiFePO₄) cells?
No-it is specifically calibrated for lithium-ion/lithium polymer chemistry with 2.500 V overdischarge and 4.425 V overcharge thresholds. LiFePO₄ cells require ~2.5–2.8 V per cell minimum and ~3.6–3.65 V maximum, making the AP9101CK-ABTRG1's voltage windows incompatible. Use Diodes' AP9211 or AP9221 series for LiFePO₄-specific protection.
AP9101CK-ABTRG1 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
AP9101CK-ABTRG1 FAQ
1.How can I place an order for AP9101CK-ABTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CK-ABTRG1 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 AP9101CK-ABTRG1 reliable?
The price and inventory of AP9101CK-ABTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CK-ABTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CK-ABTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CK-ABTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CK-ABTRG1?
AP9101CK-ABTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CK-ABTRG1 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 AP9101CK-ABTRG1?
For technical support, including AP9101CK-ABTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CK-ABTRG1 requirements.
6.How does Aetrix verify that AP9101CK-ABTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CK-ABTRG1 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 AP9101CK-ABTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CK-ABTRG1?
All AP9101CK-ABTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CK-ABTRG1, 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 AP9101CK-ABTRG1 part is unused and in its original packaging.
Return procedure for AP9101CK-ABTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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