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Diodes Incorporated AP9101CAK-BMTRG1
- Part No.:
- AP9101CAK-BMTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-BMTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,576
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Product details
Overview
AP9101CAK-BMTRG1 from Diodes Incorporated is a single-chip lithium-ion/polymer battery protection IC for 1-cell packs, featuring ±25mV overcharge voltage detection accuracy at 4.375V, ±35mV overdischarge detection accuracy at 2.500V, and integrated fixed-delay timing circuits eliminating external capacitors. It controls external N-channel MOSFETs via dedicated CO and DO gate drive pins to enforce overcharge, overdischarge, discharge/charge overcurrent, short-circuit, and overvoltage charger protection in portable power systems.
For engineers reviewing the AP9101CAK-BMTRG1 datasheet, AP9101CAK-BMTRG1 pinout, AP9101CAK-BMTRG1 application, or AP9101CAK-BMTRG1 equivalent, this device supports precise, low-power battery safety management with selectable 0V charge and power-down modes - critical for space-constrained, long-life consumer and industrial battery packs.
Technical Context
The AP9101CAK-BMTRG1 implements independent voltage and current monitoring paths: VDD–VSS sensing for cell voltage thresholds (VCU = 4.375V, VCL = 4.175V, VDL = 2.500V, VDU = 2.900V), and VM–VSS differential sensing for current detection (VDOC = 0.150V, VSHORT = 0.700V, VCOC = −0.150V). Its logic circuit enforces auto-release overcharge protection with fixed tCU = 1.0s delay and tSHORT = 8µs short-circuit response.
It uses high-voltage CMOS process enabling 30V VDD–VM tolerance and integrates internal pull-up (RVMD ≈ 300kΩ) and pull-down (RVMS ≈ 30kΩ) resistors for VM pin biasing during fault states. Power-down mode reduces ICC to 0.1µA (typ), activated by factory configuration per ordering code "AK".
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - sets precise upper cell voltage limit before CO pin disables charge path |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers DO pin shutdown to prevent deep discharge damage |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via sense resistor voltage drop |
| Short-Circuit Detection Voltage | 0.700V ±100mV - enables ultra-fast (8µs typ) DO shutdown for hard shorts |
| Operating Current (Active) | 3.0µA (typ) at VDD = 3.5V - enables multi-year runtime in always-on battery monitoring |
| Power-Down Current | 0.1µA (typ) - extends shelf life of stored battery packs with zero maintenance |
| VDD–VM Absolute Max | 30V - supports robust operation under transient charger overvoltage events |
Pinout & Package
AP9101CAK-BMTRG1 is packaged in SOT25 (5-pin) - a surface-mount, lead-free, RoHS-compliant package measuring 2.9mm × 1.6mm × 1.1mm with standard JEDEC moisture sensitivity level (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM (Pin 1) | Current Sense Input | Monitors voltage drop across external sense resistor (R2) to detect charge/discharge current faults |
| VDD (Pin 2) | Positive Supply Input | Connects to battery anode; powers IC and defines reference for all voltage thresholds |
| VSS (Pin 3) | Negative Supply Reference | Connects to battery cathode; serves as ground reference for VDD, VM, CO, and DO |
| DO (Pin 4) | Discharge Control Output | Drives gate of external discharge MOSFET (Q1); high = on, low = off during overdischarge/overcurrent |
| CO (Pin 5) | Charge Control Output | Drives gate of external charge MOSFET (Q2); high = on, low = off during overcharge/overcurrent/short |
Key Features
| Feature | Design Value |
|---|---|
| Fixed Delay Timing Circuit | Eliminates need for external timing capacitors - reduces BOM count and PCB area in compact battery modules |
| Selectable 0V Battery Charge | Factory-enabled (per AK suffix) to allow safe recharge of deeply discharged cells without manual intervention |
| Overvoltage Charger Protection | Detects >8.0V (±2V) between VDD and VM - shuts off CO to prevent damage from faulty chargers |
| Auto-Release Overcharge Mode | Automatically re-enables charging when cell voltage drops below 4.175V - avoids permanent lockout |
| High-Voltage VM Pin Tolerance | Withstands up to 30V differential between VDD and VM - ensures reliability during hot-plug or surge events |
Applications
| Smartphone Battery Pack | Wireless Earbud Case |
|---|---|
|
Use Scenario: Protects 1-cell Li-ion battery during fast charging, playback, and storage cycles. IC Role / Device Role / Timing Role: Monitors cell voltage and current in real time; asserts CO/DO within 1s (overcharge) or 8µs (short) to isolate FETs. Use Value: Prevents thermal runaway and capacity loss while enabling automatic recovery after transient overvoltage events. |
Use Scenario: Manages charge/discharge in ultra-small form factor earbud charging case with tight space constraints. IC Role / Device Role / Timing Role: Provides integrated protection with no external timing components - reducing footprint by >30% vs discrete solutions. Use Value: Enables 0V charge recovery and sub-1µA quiescent current to extend shelf life beyond 12 months. |
| Bluetooth Speaker Power Module | Portable Medical Monitor |
|
Use Scenario: Safeguards 3.7V Li-ion pack powering Class D amplifier and Bluetooth SoC under variable load. IC Role / Device Role / Timing Role: Uses VM-sense architecture to distinguish between discharge overcurrent (0.150V) and short-circuit (0.700V) with separate delays. Use Value: Avoids nuisance shutdowns during peak audio transients while ensuring immediate cutoff during wiring faults. |
Use Scenario: Ensures fail-safe battery operation in FDA-regulated handheld diagnostic devices requiring traceable safety compliance. IC Role / Device Role / Timing Role: Delivers ±25mV overcharge detection accuracy and AEC-Q200-aligned robustness (via Diodes' automotive-capable process). Use Value: Meets IEC 62133-2:2017 clause 8.3.2 requirements for overcharge protection without external calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5460N258AA-TR | Fixed 4.25V overcharge threshold; no 0V charge option; 1.5µA operating current | Lacks configurable release hysteresis and overvoltage charger detection | Choose for cost-sensitive, non-recoverable 1-cell applications where 0V charge is unnecessary |
| BD8620GUL-EVK-1 | Integrated dual-MOSFET driver; supports 2-cell stacks; 2.5µA operating current | Requires external timing capacitor; no built-in overvoltage charger protection | Prefer for multi-cell designs needing higher integration but willing to accept added BOM complexity |
Compared with R5460N258AA-TR and BD8620GUL-EVK-1, AP9101CAK-BMTRG1 uniquely combines factory-configurable 0V charge, overvoltage charger detection, and capacitor-free timing - making it optimal for compact, high-reliability 1-cell packs demanding autonomous recovery and surge resilience.
Availability
AP9101CAK-BMTRG1 is available at Aetrix Electronics and suitable for smartphone battery packs, wireless earbud cases, Bluetooth speaker power modules, and portable medical monitors requiring stable component supply, full RoHS/Green compliance, and long-term lifecycle support.
Supply support for AP9101CAK-BMTRG1 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, manufacturing, and distribution operations across Asia, the Americas, and Europe.
The AP9101C series belongs to Diodes' battery protection IC product line, engineered specifically for high-accuracy, low-quiescent-current safety management in single-cell lithium-based energy storage systems.
FAQ
What is the function of the VM pin in AP9101CAK-BMTRG1?
The VM pin serves as the current-sense input terminal, measuring voltage drop across an external sense resistor (R2) between P− and the battery cathode. It enables detection of discharge overcurrent (at 0.150V), short-circuit (at 0.700V), and charge overcurrent (at −0.150V), with internal RVMS/RVMD resistors providing automatic biasing during fault states to ensure reliable MOSFET control.
Does AP9101CAK-BMTRG1 support automatic recovery from overdischarge?
Yes - AP9101CAK-BMTRG1 supports automatic recovery from overdischarge when the battery voltage rises above the overdischarge release voltage (VDU = 2.900V) and remains there for the required delay time. This behavior is enabled by its auto-wake-up mode (factory-set per "AK" suffix), eliminating need for external wake signals or charger reconnection to resume operation.
How does the overvoltage charger protection work in this device?
The overvoltage charger protection monitors voltage between VDD and VM pins. When this differential exceeds 8.0V (±2V), the CO pin is driven low to disable the charge MOSFET immediately - with no delay. Recovery occurs when the voltage falls below 7.3V (±2V), restoring CO high to re-enable charging. This protects against damaged or misconfigured chargers without affecting normal operation.
Can AP9101CAK-BMTRG1 be used in automotive applications?
While AP9101CAK-BMTRG1 is not AEC-Q100 qualified, Diodes Incorporated offers automotive-grade variants of the AP9101C family (e.g., with PPAP capability and IATF 16949 manufacturing). For automotive use, contact Diodes directly to obtain qualified versions - the BMTRG1 variant is intended for industrial and consumer applications with operating temperature range of −40°C to +85°C.
AP9101CAK-BMTRG1 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-BMTRG1 FAQ
1.How can I place an order for AP9101CAK-BMTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-BMTRG1 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-BMTRG1 reliable?
The price and inventory of AP9101CAK-BMTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-BMTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-BMTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-BMTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-BMTRG1?
AP9101CAK-BMTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-BMTRG1 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-BMTRG1?
For technical support, including AP9101CAK-BMTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-BMTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-BMTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-BMTRG1 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-BMTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-BMTRG1?
All AP9101CAK-BMTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-BMTRG1, 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-BMTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-BMTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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