My Inquiry
My Account
Diodes Incorporated AP9101CAK-BRTRG1
- Part No.:
- AP9101CAK-BRTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-BRTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:4,293
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP9101CAK-BRTRG1 from Diodes Incorporated is a single-chip lithium-ion battery protection IC for 1-cell Li+ 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 AP9101CAK-BRTRG1 datasheet, AP9101CAK-BRTRG1 pinout, AP9101CAK-BRTRG1 application, or AP9101CAK-BRTRG1 equivalent, this device is selected for high-accuracy voltage monitoring, ultra-low quiescent current (3.0µA typ in operation), selectable power-down mode, and integrated overvoltage charger detection (8.0V fixed) in compact SOT25 packaging.
Technical Context
The AP9101CAK-BRTRG1 implements independent analog comparators for VDD–VSS (cell voltage) and VM–VSS (current-sense differential), with precision reference circuits enabling ±25mV overcharge detection accuracy. Its logic block enforces auto-release overcharge protection and supports both power-down and auto-wake-up modes via factory configuration.
It integrates internal pull-up (RVMD) and pull-down (RVMS) resistors on the VM pin to enable status recovery during overdischarge and short-circuit events, and features high-voltage CMOS process capability (30V VDD-to-VM rating) for robust charger-side fault tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage | 4.375V ±25mV - sets precise upper cell voltage limit before disabling charge FET |
| Overdischarge Detection Voltage | 2.500V ±35mV - triggers discharge FET shutdown to prevent deep discharge damage |
| Discharge Overcurrent Threshold | 0.150V ±15mV - detects excessive load current via sense resistor voltage drop |
| Operating Current | 3.0µA typical at 3.5V - enables multi-year battery standby life in low-power systems |
| Power-Down Current | 0.01µA typical - reduces leakage during storage or transport of uncharged cells |
| VM–VSS Sense Range | ±0.7V - supports bidirectional current sensing for charge/discharge monitoring |
| VDD–VM Absolute Max | 30V - withstands transient charger overvoltage without latch-up or damage |
Pinout & Package
AP9101CAK-BRTRG1 is packaged in SOT25 (5-pin) with gull-wing leads, footprint-compatible with JEDEC TO-236AB. Pin 1 marked with dot; thermal pad not present. Package dimensions: 2.9mm × 1.6mm × 1.1mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Current-sense input | Differential input referenced to VSS; monitors voltage across external sense resistor for charge/discharge current detection |
| VDD | Positive supply input | Connects to battery positive terminal; powers internal circuitry and drives CO/DO outputs |
| VSS | Negative supply reference | System ground reference; common node for all internal comparators and logic |
| DO | Discharge control output | Drives gate of external N-MOSFET in discharge path; pulled low during overdischarge or overcurrent |
| CO | Charge control output | Drives gate of external N-MOSFET in charge path; pulled low during overcharge, overcurrent, or overvoltage charger fault |
Key Features
| Feature | Design Value |
|---|---|
| Factory-configurable 0V battery charge | Enables safe recharge of fully depleted cells without manual pre-charge circuitry |
| Fixed internal delay timers | Eliminates need for external RC networks-reduces BOM count and layout sensitivity |
| Selectably enabled power-down mode | Reduces system leakage to <0.02µA during long-term storage while preserving state |
| Integrated overvoltage charger detection | Monitors VDD–VM directly; shuts off charge FET if charger exceeds 8.0V (±2V) |
| High-accuracy hysteresis control | Programmable overcharge hysteresis (0.1–0.4V) prevents oscillation near trip thresholds |
Applications
| Power Tool Battery Packs | Wireless Headphone Charging Cases |
|---|---|
Use Scenario: Rechargeable 1-cell Li+ pack powering cordless drills with peak discharge currents >10A. IC Role / Device Role / Timing Role: Primary protection controller enforcing voltage and current limits during fast charge and high-pulse discharge cycles. Use Value: Prevents thermal runaway by detecting 0.150V sense-resistor drop within 10ms, enabling immediate DO pin shutdown before MOSFET SOA violation. |
Use Scenario: Compact charging case housing dual earbuds with embedded 1-cell Li+ battery and USB-C input. IC Role / Device Role / Timing Role: Single-chip safety supervisor managing charge termination, discharge cutoff, and short-circuit response in space-constrained design. Use Value: Enables 0V battery charge function to recover earbuds left unused for months, eliminating customer "dead case" returns. |
| Medical Wearable Monitors | Smart Home Sensor Nodes |
Use Scenario: Patch-style ECG monitor with 1-cell Li+ battery operating continuously for 7 days per charge. IC Role / Device Role / Timing Role: Low-quiescent protector maintaining <3µA system sleep current while guarding against overdischarge below 2.500V. Use Value: Extends usable battery capacity by 8% versus looser thresholds, directly increasing clinical wear time between charges. |
Use Scenario: Zigbee-enabled door/window sensor powered by coin-cell–sized 1-cell Li+ battery with 5-year target lifetime. IC Role / Device Role / Timing Role: Ultra-low-leakage guardian ensuring battery remains functional after years of shelf storage and intermittent wake-ups. Use Value: 0.01µA power-down current prevents >1% annual self-discharge-critical for achieving multi-year field deployment. |
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 |
|---|---|---|---|
| R5460N258AA-TR | Fixed 2.5V overdischarge threshold only; no programmable hysteresis or 0V charge option | Limited to cost-sensitive consumer devices where full feature set is unnecessary | Choose when BOM simplicity outweighs configurability and long-term cell health optimization |
| BD14001GUL | Requires external capacitor for delay timing; higher 5.5µA operating current | Suitable for industrial battery packs where external component count is acceptable | Prefer when legacy design reuse or compatibility with existing RC-timed protection schemes is required |
Compared with R5460N258AA-TR and BD14001GUL, AP9101CAK-BRTRG1 delivers tighter voltage accuracy (±25mV vs ±50mV), lower operating current (3µA vs 5.5µA), and factory-set 0V charge support-enabling longer runtime, safer deep-discharge recovery, and reduced bill-of-materials in next-generation portable electronics.
Availability
AP9101CAK-BRTRG1 is available at Aetrix Electronics and suitable for power tool battery packs, wireless headphone charging cases, medical wearable monitors, and smart home sensor nodes requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green manufacturing.
Supply support for AP9101CAK-BRTRG1 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 solutions, with design centers across Asia, Europe, and the US and manufacturing in IATF 16949-certified facilities.
The AP9101C belongs to Diodes' battery protection IC product line, engineered specifically for high-accuracy, low-power, single-cell Li+ pack safety in portable and wearable electronics where reliability and longevity are critical.
FAQ
What is the function of the VM pin on AP9101CAK-BRTRG1?
The VM pin serves as the differential current-sense input referenced to VSS. It monitors voltage across an external sense resistor to detect charge/discharge current magnitude and direction. Internal RVMD and RVMS resistors connect dynamically during fault conditions to enable automatic recovery from overdischarge and short-circuit states without external intervention.
Does AP9101CAK-BRTRG1 support overvoltage protection on the charger input?
Yes-it includes a dedicated overvoltage charger detection circuit that monitors the voltage between VDD and VM pins. When this exceeds 8.0V (±2V), the CO pin is driven low to disable the charge FET immediately, with no delay. Release occurs at 7.3V (±2V), also with zero delay, providing direct protection against faulty or mismatched chargers.
Can AP9101CAK-BRTRG1 be used with 2-cell battery configurations?
No-AP9101CAK-BRTRG1 is designed exclusively for 1-cell Li+ or Li-polymer batteries. Its voltage detection ranges (e.g., 4.375V overcharge, 2.500V overdischarge) and internal references are calibrated for single-cell operation. For 2-cell stacks, Diodes recommends the AP9211 or AP9221 series, which support higher voltage thresholds and dual-cell balancing interfaces.
How does the 0V battery charge function operate in AP9101CAK-BRTRG1?
This function is factory-configured and allows the IC to permit charging when the battery voltage is 0V. It activates when the charger applies ≥1.2V to VDD while VM is floating or near VSS. The internal logic overrides normal under-voltage lockout, enabling safe trickle recharge until cell voltage rises above 2.500V, at which point standard protection resumes.
AP9101CAK-BRTRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-BRTRG1 FAQ
1.How can I place an order for AP9101CAK-BRTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-BRTRG1 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-BRTRG1 reliable?
The price and inventory of AP9101CAK-BRTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-BRTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-BRTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-BRTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-BRTRG1?
AP9101CAK-BRTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-BRTRG1 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-BRTRG1?
For technical support, including AP9101CAK-BRTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-BRTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-BRTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-BRTRG1 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-BRTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-BRTRG1?
All AP9101CAK-BRTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-BRTRG1, 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-BRTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-BRTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP9101CAK-BRTRG1 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…
