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Diodes Incorporated AP9101CK-BDTRG1
- Part No.:
- AP9101CK-BDTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CK-BDTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:4,461
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Product details
Overview
AP9101CK-BDTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell packs, integrating overcharge (4.425 V ±25 mV), overdischarge (2.500 V ±35 mV), discharge overcurrent (0.150 V ±15 mV), charge overcurrent (−0.150 V ±15 mV), and short-circuit (0.700 V ±100 mV) detection with fixed delay timing. It drives external N-channel MOSFETs via CO/DO pins and supports 0V battery charging and selectable power-down mode.
For engineers reviewing the AP9101CK-BDTRG1 datasheet, AP9101CK-BDTRG1 pinout, AP9101CK-BDTRG1 application, or AP9101CK-BDTRG1 equivalent, this device delivers precision voltage thresholds, ultra-low quiescent current (3.0 µA typ in operation, 0.01 µA typ in power-down), high-voltage VM–VDD tolerance (30 V), and SOT25 packaging for compact battery pack integration.
Technical Context
The AP9101CK-BDTRG1 implements independent analog comparators for five fault conditions-overcharge, overdischarge, discharge overcurrent, charge overcurrent, and short circuit-with dedicated hysteresis and fixed internal delay timers (e.g., tCU = 1.0 s typ, tSHORT = 8 µs typ). Its logic circuitry controls CO and DO gate outputs to disable external N-MOSFETs based on real-time VM–VSS and VDD–VSS voltage monitoring.
It features dual internal resistive networks (RVMD = 300 kΩ typ, RVMS = 30 kΩ typ) enabling automatic status recovery during overdischarge or overcurrent events, and includes an overvoltage charger detector (8.0 V ±2 V) between VDD and VM with immediate latch-off behavior and no delay.
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+ cells |
| Discharge Overcurrent Threshold | 0.150 V ±15 mV - detects excessive load current via sense resistor voltage drop |
| Charge Overcurrent Threshold | −0.150 V ±15 mV - monitors reverse current flow during abnormal charging |
| Short-Circuit Detection Voltage | 0.700 V ±100 mV - triggers sub-10 µs shutdown for hard shorts at battery terminals |
| Operating Current (Typ) | 3.0 µA at VDD = 3.5 V - enables multi-year runtime in always-on battery packs |
| Power-Down Current (Typ) | 0.01 µA - extends shelf life of stored devices with zero-load standby |
| VM–VDD Absolute Max | 30 V - supports robust operation under transient charger overvoltage events |
Pinout & Package
AP9101CK-BDTRG1 is housed in a RoHS-compliant, lead-free SOT25 (SC-74A) surface-mount package measuring 2.9 mm × 1.6 mm × 1.1 mm, optimized for space-constrained battery management modules.
| 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 discharge N-MOSFET; goes low to disconnect load during overdischarge or overcurrent |
| CO (Pin 5) | Charge control output | Drives gate of charge N-MOSFET; goes low to block charging during overcharge or charge overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Integrated fixed-delay timing | No external capacitors required for overcharge (1.0 s typ), overdischarge (100 ms typ), or short-circuit (8 µs typ) response |
| Selectably enabled 0V battery charge | Allows safe recharge of fully depleted cells down to 0 V without manual intervention |
| Configurable power-down mode | Reduces current to 0.01 µA typ; activated by factory option and controlled via VM pin state |
| High-accuracy voltage detection | ±25 mV overcharge threshold accuracy ensures tight cell voltage control without calibration |
| Overvoltage charger protection | 8.0 V ±2 V detection between VDD and VM shuts off charge path instantly during faulty charger events |
Applications
| Smart Wearables | Bluetooth Headsets |
|---|---|
Use Scenario: Compact Li+ battery packs powering fitness trackers with multi-week runtime and USB-C charging. IC Role / Device Role / Timing Role: Primary protection IC monitoring cell voltage, load current, and charger faults; enforces safety cutoffs within fixed microsecond-to-second delays. Use Value: Prevents thermal runaway during accidental short circuits and enables reliable 0V recovery after long-term storage. |
Use Scenario: Dual-cell (1S) polymer battery systems in wireless earbuds with fast-charge capability and case-based recharging. IC Role / Device Role / Timing Role: Single-chip protector managing both charge and discharge paths; coordinates with case charging IC via VM sensing. Use Value: Eliminates need for external timing capacitors, reducing BOM count and PCB area by >30% versus discrete solutions. |
| Portable Medical Sensors | IoT Asset Trackers |
Use Scenario: Disposable temperature/humidity sensors deployed in remote locations with 5-year battery life requirements. IC Role / Device Role / Timing Role: Low-power protector maintaining <3 µA operating current and entering 0.01 µA sleep during extended idle periods. Use Value: Extends usable battery capacity by minimizing quiescent drain while retaining full fault coverage. |
Use Scenario: GPS-enabled logistics tags powered by primary Li+ cells, exposed to wide ambient temperatures (−40°C to +85°C). IC Role / Device Role / Timing Role: Temperature-compensated protector delivering ±35 mV overdischarge accuracy across full industrial range. Use Value: Avoids premature shutdown in cold environments, preserving location reporting uptime during winter deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5460N255AA-TR | Fixed 4.25 V overcharge threshold; no 0V charge function; SOT23-6 package | Lacks configurable thresholds and 0V recovery; suited for cost-sensitive, non-recoverable designs | Choose when fixed thresholds and lower unit cost outweigh programmability and field recovery needs |
| AB1816A-25-T1 | Supports 2-cell stacks; higher VDD max (24 V); no overvoltage charger detection | Designed for multi-cell battery management; not pin-compatible or functionally equivalent for 1S use | Only consider for future 2S expansion; requires PCB redesign and firmware adaptation |
Compared with R5460N255AA-TR and AB1816A-25-T1, the AP9101CK-BDTRG1 uniquely combines factory-programmable voltage thresholds, integrated 0V charge enablement, and overvoltage charger detection-all in a 5-pin SOT25 footprint-making it optimal for next-generation single-cell consumer and medical battery packs requiring field reliability and minimal external components.
Availability
AP9101CK-BDTRG1 is available at Aetrix Electronics and suitable for smart wearables, Bluetooth audio devices, portable medical sensors, and IoT asset trackers requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.
Supply support for AP9101CK-BDTRG1 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 power management, signal integrity, and protection solutions for high-volume industrial and consumer markets.
The AP9101C product line delivers highly integrated, low-quiescent-current battery protection ICs targeting compact, cost-sensitive 1-cell Li+ applications where reliability, small footprint, and factory-configurable thresholds are critical.
FAQ
What is the function of the VM pin on the AP9101CK-BDTRG1?
The VM pin serves as the current-sense input that monitors the voltage drop across an external sense resistor between the battery's P− terminal and ground. It enables detection of discharge overcurrent, charge overcurrent, and short-circuit conditions. Internally, it connects to RVMD and RVMS resistive networks to support automatic recovery from overdischarge and overcurrent states without external intervention.
Does the AP9101CK-BDTRG1 support overvoltage protection for the charger input?
Yes-the AP9101CK-BDTRG1 includes a dedicated overvoltage charger detection circuit that monitors the voltage between VDD and VM pins. When this voltage exceeds 8.0 V (±2 V), the CO pin immediately goes low to disable the charge MOSFET. Release occurs when the voltage falls below 7.3 V (±2 V), with no built-in delay for either detection or release.
How does the 0V battery charge function operate, and is it enabled on this variant?
The 0V battery charge function is factory-enabled on AP9101CK-BDTRG1, allowing the IC to permit charging even when the battery voltage has dropped to 0 V due to self-discharge. This is implemented via internal logic that overrides the normal overdischarge lockout when a valid charger is detected, enabling safe recovery without manual reset or external circuitry.
Can the AP9101CK-BDTRG1 be used with both N-channel and P-channel MOSFETs in the protection circuit?
The AP9101CK-BDTRG1 is designed exclusively for N-channel MOSFETs in both charge and discharge paths. Its CO and DO outputs drive the gates of N-MOSFETs referenced to VSS, and its internal architecture assumes low-side switching configuration. Driving P-channel devices would require level-shifting circuitry not supported by the IC's output stage or logic design.
AP9101CK-BDTRG1 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-BDTRG1 FAQ
1.How can I place an order for AP9101CK-BDTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CK-BDTRG1 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-BDTRG1 reliable?
The price and inventory of AP9101CK-BDTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CK-BDTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CK-BDTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CK-BDTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CK-BDTRG1?
AP9101CK-BDTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CK-BDTRG1 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-BDTRG1?
For technical support, including AP9101CK-BDTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CK-BDTRG1 requirements.
6.How does Aetrix verify that AP9101CK-BDTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CK-BDTRG1 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-BDTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CK-BDTRG1?
All AP9101CK-BDTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CK-BDTRG1, 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-BDTRG1 part is unused and in its original packaging.
Return procedure for AP9101CK-BDTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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