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Diodes Incorporated AP9101CK-BATRG1
- Part No.:
- AP9101CK-BATRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CK-BATRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,457
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Product details
Overview
AP9101CK-BATRG1 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 0.150V ±15mV, 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 charge functionality.
For engineers reviewing the AP9101CK-BATRG1 datasheet, AP9101CK-BATRG1 pinout, AP9101CK-BATRG1 application, or AP9101CK-BATRG1 equivalent, this device serves as a precision, low-quiescent-current (3.0µA typ) protection solution for portable Li+ power systems requiring stable voltage thresholds, configurable power-down mode, and integrated overvoltage charger monitoring up to 30V between VDD and VM.
Technical Context
The AP9101CK-BATRG1 implements independent analog comparators for overcharge, overdischarge, discharge/charge overcurrent, short-circuit, and overvoltage charger conditions, each with user-selectable thresholds and hysteresis. Its logic circuit enforces auto-release behavior after threshold recovery and includes internal resistance networks (RVMD/RVMS) for VM pin biasing during fault states.
It operates across –40°C to +85°C with supply voltage from 1.5V to 5.5V and supports dual package options: SOT25 (5-pin) and SOT26 (6-pin, NC on Pin 4). The device uses high-voltage CMOS process technology enabling 30V absolute maximum rating between VDD and VM pins, critical for robust charger-side sensing in 1-cell applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - sets precise upper cell voltage limit before disabling charge path |
| Overdischarge Detection Voltage | 2.500V ±35mV - prevents deep discharge damage to Li+ cell anode structure |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via sense resistor voltage drop |
| Quiescent Current (Operation) | 3.0µA typical at VDD = 3.5V - enables multi-year battery shelf life in standby |
| VM–VSS Absolute Max Rating | 30V - allows direct connection to unregulated charger inputs without level-shifting |
| 0V Battery Charge Function | Enabled - permits safe reactivation of fully depleted cells using external charger |
| Power-Down Mode | Selectable - reduces current to 0.1µA typ when activated, requires charger to wake |
Pinout & Package
AP9101CK-BATRG1 is packaged in SOT25 (5-pin), with Pin 1 marked and pinout matching the standard configuration: VM (Pin 1), VDD (Pin 2), VSS (Pin 3), DO (Pin 4), CO (Pin 5).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current-sense input | Monitors voltage drop across external sense resistor to detect charge/discharge overcurrent and short-circuit events |
| 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; serves as ground reference for all voltage comparators and logic |
| DO | Discharge control output | Drives gate of external N-MOSFET in discharge path; goes low to disable discharge during faults |
| CO | Charge control output | Drives gate of external N-MOSFET in charge path; goes low to disable charging during overvoltage or overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Fixed internal delay timers | Eliminates need for external timing capacitors-reduces BOM count and layout area |
| High-accuracy voltage detection | ±25mV overcharge detection tolerance ensures tight cell voltage control without calibration |
| Integrated VM biasing network | Rvmd (300kΩ typ) and Rvms (30kΩ typ) enable automatic VM pull-up/pull-down during fault recovery |
| Overvoltage charger monitor | Detects >8.0V between VDD and VM and disables charge path instantly-no delay required |
| RoHS-compliant & halogen-free | Fully green construction meeting IEC 61249-2-21 and JEDEC JS709C requirements |
Applications
| Smartphone Battery Pack | Wireless Earbud Power Module |
|---|---|
|
Use Scenario: Single-cell Li+ pack powering compact mobile audio devices with strict size and self-discharge constraints. IC Role / Device Role / Timing Role: Primary protection controller managing charge/discharge paths, detecting overvoltage, overcurrent, and 0V recovery events. Use Value: Enables reliable 0V battery recharge capability and sub-3µA quiescent current to extend shelf life beyond 12 months. |
Use Scenario: Ultra-low-power wearable with intermittent charging cycles and aggressive energy budgeting. IC Role / Device Role / Timing Role: Fault-monitoring supervisor that isolates battery during short-circuit events with <1µs response latency. Use Value: Prevents thermal runaway via 0.7V short-circuit detection threshold and sub-100ns timing resolution. |
| Bluetooth Tracker Battery | Medical Patch Monitor |
|
Use Scenario: Long-life asset tracker operating on coin-cell-sized 1S Li+ with infrequent USB-C charging. IC Role / Device Role / Timing Role: Dual-function protector providing both overdischarge release at 2.900V and configurable power-down mode. Use Value: Reduces system standby current to ≤0.1µA in power-down state, extending operational lifetime by >30%. |
Use Scenario: Class II medical wearable requiring fail-safe battery management under ISO 13485 design controls. IC Role / Device Role / Timing Role: Safety-critical voltage and current monitor enforcing IEC 62368-1 compliant discharge cutoff at 2.500V. Use Value: Delivers ±35mV overdischarge detection accuracy to prevent irreversible cathode degradation in clinical use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar lithium-ion 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; 5-pin TSOT-23 package | Lacks configurable thresholds and 0V recovery-suitable only for legacy designs with fixed chemistry | Choose if cost sensitivity outweighs programmability and long-term shelf-life requirements |
| Ricoh RP506K001B-TR-F | Supports 2-cell stacks; higher VDD max (20V); no overvoltage charger detection feature | Designed for multi-cell systems; incompatible with 1S VM sensing architecture of AP9101C | Select only when scaling to 2S battery topology or requiring higher VDD tolerance without charger-side monitoring |
Compared with S-8261AAB-M6T1U and RP506K001B-TR-F, the AP9101CK-BATRG1 uniquely combines factory-programmed 4.375V/2.500V thresholds, 0V charge enablement, and 30V VM–VDD rating-making it optimal for next-generation compact 1S Li+ systems demanding precision, longevity, and charger-integrated safety.
Availability
AP9101CK-BATRG1 is available at Aetrix Electronics and suitable for smartphone battery packs, wireless earbud modules, Bluetooth trackers, and medical patch monitors requiring stable component supply, full RoHS/Green compliance, and guaranteed long-term lifecycle support.
Supply support for AP9101CK-BATRG1 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 operations certified to IATF 16949 and ISO 9001 standards.
The AP9101C belongs to Diodes' battery protection IC product line, engineered specifically for high-accuracy, low-power 1-cell Li+ pack supervision in consumer and medical wearables where voltage tolerance, quiescent current, and fault response time are critical.
FAQ
What is the function of the VM pin on AP9101CK-BATRG1?
The VM pin serves as the current-sense input for detecting discharge overcurrent, charge overcurrent, and short-circuit conditions. It measures voltage drop across an external sense resistor between the battery's P– terminal and load/charger. Internal resistors RVMD and RVMS automatically bias VM during fault recovery to ensure correct CO/DO state transitions.
Does AP9101CK-BATRG1 support automatic recovery from overdischarge?
Yes-AP9101CK-BATRG1 supports auto-release from overdischarge status when battery voltage rises above the overdischarge release voltage (2.900V) and remains there for the configured delay time. Recovery does not require external intervention unless power-down mode is enabled, in which case charger connection is mandatory.
Can AP9101CK-BATRG1 be used in 2-cell battery configurations?
No-AP9101CK-BATRG1 is designed exclusively for 1-cell Li+ or Li-polymer batteries. Its voltage detection ranges (e.g., 2.500V–4.375V), VM pin voltage rating relative to VSS, and internal logic are optimized for single-cell operation. For 2-cell applications, Diodes offers the AP9211 or AP9221 series.
How does the overvoltage charger detection feature work?
The overvoltage charger detection circuit continuously monitors voltage between VDD and VM pins. If this differential exceeds 8.0V (±2V), the CO pin is driven low immediately-without delay-to disable the charge MOSFET. When the differential falls below 7.3V (±2V), CO returns high to resume charging. This protects against faulty or mismatched chargers.
AP9101CK-BATRG1 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-BATRG1 FAQ
1.How can I place an order for AP9101CK-BATRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CK-BATRG1 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-BATRG1 reliable?
The price and inventory of AP9101CK-BATRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CK-BATRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CK-BATRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CK-BATRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CK-BATRG1?
AP9101CK-BATRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CK-BATRG1 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-BATRG1?
For technical support, including AP9101CK-BATRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CK-BATRG1 requirements.
6.How does Aetrix verify that AP9101CK-BATRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CK-BATRG1 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-BATRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CK-BATRG1?
All AP9101CK-BATRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CK-BATRG1, 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-BATRG1 part is unused and in its original packaging.
Return procedure for AP9101CK-BATRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP9101CK-BATRG1 Tags
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