My Inquiry
My Account
Diodes Incorporated AP9101CAK-BYTRG1
- Part No.:
- AP9101CAK-BYTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-BYTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,364
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP9101CAK-BYTRG1 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 to protect against voltage, current, and short-circuit faults in portable power systems.
For engineers reviewing the AP9101CAK-BYTRG1 datasheet, AP9101CAK-BYTRG1 pinout, AP9101CAK-BYTRG1 application, or AP9101CAK-BYTRG1 equivalent, this device supports precise, low-power battery safety management in space-constrained consumer and industrial Li+ packs where component count, quiescent current (3.0µA typ), and factory-programmed voltage thresholds are critical selection criteria.
Technical Context
The AP9101CAK-BYTRG1 integrates a high-accuracy analog front-end with independent voltage comparators for VDD–VSS (cell voltage) and VM–VSS (current-sense differential), plus logic-controlled delay timers for all protection events. Its internal level-shift circuit enables direct control of high-side charge MOSFETs despite VM floating during discharge.
It implements selectable power-down mode (enabled by default in AK variant) and factory-configured 0V battery charge function. Protection release behavior is auto-reset: overcharge releases when cell voltage drops below 4.175V, overdischarge releases at 2.900V, and short-circuit protection recovers automatically upon load removal due to RVMS pull-down activation.
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 - corresponds to 150mV across sense resistor for ~1.5A–3A typical pack current cutoff |
| Quiescent Current (Op Mode) | 3.0µA typ at 3.5V - enables multi-year shelf life in always-connected battery packs |
| VM–VSS Sense Range | ±0.7V - supports bidirectional current monitoring for charge/discharge polarity detection |
| CO/DO Output Drive | 6kΩ typ "H" resistance - directly drives standard N-MOSFET gates without external buffers |
| Operating Voltage Range | 1.5V to 5.5V on VDD–VSS - accommodates full Li+ cell voltage range including post-protection recovery |
Pinout & Package
AP9101CAK-BYTRG1 is packaged in SOT25 (5-pin) with gull-wing leads and JEDEC-standard footprint. Pin 1 marked with dot; thermal pad not present. Compatible with reflow soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current-sense input | Differential input referenced to VSS; monitors voltage drop across external sense resistor for charge/discharge current |
| VDD | Positive supply input | Connects to battery positive terminal; powers internal circuitry and provides reference for CO/DO outputs |
| VSS | Negative supply ground | System ground reference for all analog comparators and digital logic; tied to battery negative |
| DO | Discharge control output | Drives gate of discharge N-MOSFET; goes low to disable discharge path during overdischarge or overcurrent |
| CO | Charge control output | Drives gate of charge N-MOSFET; goes low to disable charge path during overcharge, overvoltage charger, or charge overcurrent |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed voltage thresholds | Fixed 4.375V/4.175V overcharge/overcharge-release and 2.500V/2.900V overdischarge/overdischarge-release eliminate external resistor trimming |
| No external timing capacitors | Built-in fixed-delay circuit ensures consistent tCU = 1.0s, tDL = 128ms, tDOC = 16ms without layout-sensitive components |
| 0V battery charge enable | Permits safe recharge of deeply depleted cells down to 0V using external charger, preventing permanent capacity loss |
| Selectable power-down mode | Reduces current to 0.1µA typ in overdischarge state, extending shelf life without requiring manual reset |
| High-voltage VM interface | Withstands up to 30V between VDD and VM pins, enabling robust operation during charger fault transients |
Applications
| Wireless Headphones | Power Tool Battery Packs |
|---|---|
|
Use Scenario: Compact 1-cell Li+ pack powering Bluetooth audio with frequent partial cycles and occasional deep discharge. IC Role / Device Role / Timing Role: Primary protection controller enforcing voltage and current limits; triggers DO/CO cutoff within 128ms of overdischarge detection. Use Value: Prevents irreversible copper dissolution at <2.5V while maintaining <3µA self-discharge to preserve charge during 6-month storage. |
Use Scenario: High-current 18V platform tool battery with aggressive discharge pulses up to 20A. IC Role / Device Role / Timing Role: Dual-path MOSFET driver managing independent charge/discharge FETs; detects 0.150V sense threshold in <16ms for overcurrent shutdown. Use Value: Enables use of low-RDS(on) discrete MOSFETs without external current-sense amplifiers or timing ICs, reducing BOM count by 3 components. |
| Medical Wearables | Smart Home Sensors |
|
Use Scenario: ISO 13485-certified wearable ECG monitor with sealed 300mAh Li+ cell and 5-year service life requirement. IC Role / Device Role / Timing Role: Safety-critical protection element certified per IEC 62368-1; performs continuous VDD–VSS and VM–VSS monitoring at 3µA. Use Value: Meets long-term reliability targets via RoHS/Green compliance, 150°C junction rating, and ±25mV overcharge accuracy eliminating field failures from voltage drift. |
Use Scenario: Zigbee-enabled temperature/humidity sensor operating on coin-cell-equivalent 1-cell Li+ with multi-year battery life. IC Role / Device Role / Timing Role: Ultra-low-power supervisor enabling 0V charge recovery and automatic wake-up from overdischarge without host intervention. Use Value: Eliminates need for mechanical reset button or external LDO supervision, reducing assembly cost and failure modes in high-volume deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5640T252C-TR | Fixed 4.250V overcharge threshold; no 0V charge function; 1.8µA operating current | Lacks factory-configurable VDL/VDU hysteresis and overvoltage charger detection | Choose for cost-sensitive designs where 4.25V OCV aligns with cell chemistry and charger voltage is tightly regulated |
| BD8620GUL-EVK | Integrated charge/disch arg e MOSFETs; 2.5V–4.4V adjustable OCV via external resistors; 5.5µA IQ | Monolithic solution eliminates external FETs but increases thermal coupling and reduces design flexibility | Prefer when board space is constrained and fixed 4.375V threshold is unnecessary; verify thermal derating under 2A continuous load |
Compared with R5640T252C-TR, AP9101CAK-BYTRG1 offers tighter overcharge accuracy (±25mV vs ±50mV) and integrated overvoltage charger protection; versus BD8620GUL-EVK, it delivers lower quiescent current and configurable protection release behavior without sacrificing external FET optimization.
Availability
AP9101CAK-BYTRG1 is available at Aetrix Electronics and suitable for wireless headphones, power tool battery packs, medical wearables, and smart home sensors requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/Green compliance.
Supply support for AP9101CAK-BYTRG1 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 devices, with manufacturing certified to IATF 16949 and product qualification aligned to AEC-Q standards.
The AP9101C series belongs to Diodes' battery management IC portfolio, designed specifically for high-accuracy, low-component-count protection of single-cell Li-ion and Li-polymer battery packs in consumer and industrial applications.
FAQ
What is the function of the VM pin on AP9101CAK-BYTRG1?
The VM pin serves as the differential current-sense input referenced to VSS. It monitors voltage drop across an external sense resistor to detect charge/discharge current direction and magnitude. During overcurrent or short-circuit events, internal switches connect RVMS or RVMD to pull VM toward VSS or VDD, enabling automatic recovery without host intervention.
Does AP9101CAK-BYTRG1 support both charge and discharge MOSFET control?
Yes. The CO pin controls the gate of the charge-path N-channel MOSFET, turning it off during overcharge, overvoltage charger, or charge overcurrent conditions. The DO pin independently controls the discharge-path N-channel MOSFET, disabling it during overdischarge, discharge overcurrent, or short-circuit events. This dual-control architecture enables precise, isolated protection of both charge and discharge paths.
How does the 0V battery charge function operate in AP9101CAK-BYTRG1?
The 0V battery charge function is factory-enabled in the AK variant. When battery voltage is 0V, the IC permits external charger current to flow through the charge MOSFET once VDD rises above 1.2V, allowing safe recovery of deeply self-discharged cells. Without this feature, the device would block charging until cell voltage exceeds typical 2.0V, risking permanent capacity loss.
Can AP9101CAK-BYTRG1 be used in automotive applications?
AP9101CAK-BYTRG1 itself is not AEC-Q200 qualified. Diodes Incorporated offers automotive-grade variants (e.g., AP9101CxxxAQxxx) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation. For automotive use, contact Diodes' automotive sales team to obtain qualified equivalents with full change control and reliability reporting.
AP9101CAK-BYTRG1 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-BYTRG1 FAQ
1.How can I place an order for AP9101CAK-BYTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-BYTRG1 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-BYTRG1 reliable?
The price and inventory of AP9101CAK-BYTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-BYTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-BYTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-BYTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-BYTRG1?
AP9101CAK-BYTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-BYTRG1 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-BYTRG1?
For technical support, including AP9101CAK-BYTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-BYTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-BYTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-BYTRG1 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-BYTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-BYTRG1?
All AP9101CAK-BYTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-BYTRG1, 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-BYTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-BYTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP9101CAK-BYTRG1 Tags
-
BQ29700DSER
Texas Instruments
-
S-8241ABKMC-GBKT2G
ABLIC Inc.
-
S-8241ABPMC-GBPT2G
ABLIC Inc.
-
BQ27427YZFR
Texas Instruments
-
BQ27426YZFR
Texas Instruments
-
STC3117IJT
STMicroelectronics
-
STC3115IJT
STMicroelectronics
-
BQ76925RGER
Texas Instruments
-
NPM1100-QDAA-R
Nordic Semiconductor ASA
-
BQ27441DRZR-G1A
Texas Instruments
-
STC3115AIQT
STMicroelectronics
-
S-8252AAL-M6T1U
ABLIC Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
