My Inquiry
My Account
Diodes Incorporated AP9101CAK-CHTRG1
- Part No.:
- AP9101CAK-CHTRG1
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP9101CAK-CHTRG1.pdf
- Description:
- IC BATT PROT LI-ION 1CELL SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:4,835
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP9101CAK-CHTRG1 from Diodes Incorporated is a single-chip lithium-ion/polymer battery protection IC designed for 1-cell packs. It integrates overcharge, overdischarge, charge/discharge overcurrent, short-circuit, and overvoltage charger detection with ±25mV overcharge voltage accuracy, 3.0µA typical operating current, and fixed internal delay timing. It drives external N-channel MOSFETs via dedicated CO and DO pins in portable power tools, Bluetooth headsets, and medical wearables.
For engineers reviewing the AP9101CAK-CHTRG1 datasheet, AP9101CAK-CHTRG1 pinout, AP9101CAK-CHTRG1 application, or AP9101CAK-CHTRG1 equivalent, this page delivers verified functional roles, exact voltage thresholds (e.g., VCU = 4.375V, VDL = 2.500V), real-world timing behavior (tCU = 1.0s typ), SOT25 package mapping, and validated alternative parts with documented electrical and release-mode differences.
Technical Context
The AP9101CAK-CHTRG1 implements dual-MOSFET control logic with independent CO (charge FET gate) and DO (discharge FET gate) outputs, using VM as a bidirectional current-sense node referenced to VSS. Its protection decisions rely on six voltage comparators-three for battery voltage (VCU/VCL, VDL/VDU) and three for VM-based current sensing (VDOC, VSHORT, VCOC)-each with factory-trimmed thresholds and ±20% delay tolerance.
It features selectable power-down mode (enabled by default per "K" suffix), 0V battery charge function (enabled), and auto-release overcharge protection. The IC operates across -40°C to +85°C with 1.5–5.5V supply range and supports up to 30V differential between VDD and VM pins via high-voltage CMOS process.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcharge Detection Voltage (VCU) | 4.375V ±25mV - triggers CO shutdown when cell voltage exceeds this threshold for ≥1.0s |
| Overdischarge Detection Voltage (VDL) | 2.500V ±35mV - initiates DO shutdown during discharge if cell voltage drops below this level |
| Discharge Overcurrent Threshold (VDOC) | 0.095V ±15mV - detects >95mV drop across sense resistor R2 to activate discharge cutoff |
| Operating Current (ICC) | 3.0µA typ at 3.5V - enables multi-year runtime in low-power battery packs |
| Power-Down Current (ISTB) | 0.01µA typ - reduces leakage during storage or deep sleep states |
| VM–VSS Sense Range | -0.2V to +0.7V - supports bidirectional current monitoring for charge/discharge/short events |
| Overvoltage Charger Detection | 8.0V ±2V - disables charging if input exceeds safe adapter voltage, releasing at 7.3V |
Pinout & Package
AP9101CAK-CHTRG1 is housed in a RoHS-compliant, lead-free SOT25 (SC-74A) surface-mount package measuring 2.9mm × 1.6mm × 1.1mm, optimized for compact 1-cell battery pack PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM (Pin 1) | Current-sense input | Monitors voltage drop across external sense resistor R2 to detect charge/discharge/short current |
| VDD (Pin 2) | Positive supply input | Connects to battery anode; powers internal circuitry and sets reference for all voltage comparators |
| VSS (Pin 3) | Negative supply ground | System ground reference for VDD, VM, CO, and DO; forms return path for protection logic |
| DO (Pin 4) | Discharge FET gate driver | Drives external N-MOSFET gate to disconnect load during overdischarge or overcurrent events |
| CO (Pin 5) | Charge FET gate driver | Drives external N-MOSFET gate to block charger during overcharge, overcurrent, or overvoltage conditions |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed voltage thresholds | VCU = 4.375V, VDL = 2.500V, VDOC = 0.095V - eliminates external resistor trimming and calibration effort |
| Built-in fixed delay timers | tCU = 1.0s, tDL = 128ms, tDOC = 16ms - removes need for external capacitors and improves BOM count reduction |
| Selectable 0V battery charge | Enabled (per "K" suffix) - allows safe reactivation of deeply discharged cells without manual pre-charge circuits |
| High-voltage VM pin rating | 30V max VDD–VM differential - accommodates wide-input chargers and prevents latch-up during transient surges |
| Low-quiescent power-down mode | 0.01µA standby current - extends shelf life and minimizes self-discharge impact in long-storage applications |
Applications
| Power Tools | Wireless Headsets |
|---|---|
|
Use Scenario: Cordless drill battery pack subjected to high-current bursts (>10A) and thermal cycling during repeated charge/discharge cycles. IC Role / Device Role / Timing Role: Primary protection controller enforcing overcurrent cutoff within 16ms and overvoltage shutdown at 8.0V to prevent Li-ion thermal runaway. Use Value: Enables use of cost-effective discrete N-MOSFETs instead of integrated smart FETs while maintaining UL2054 compliance. |
Use Scenario: Compact Bluetooth earbud battery exposed to frequent partial charging and accidental shorting during handling. IC Role / Device Role / Timing Role: Dual-threshold overdischarge protector (VDL = 2.500V, VDU = 2.900V) with hysteresis to avoid oscillation near cutoff. Use Value: Extends usable cycle life by preventing deep discharge damage and enabling reliable 0V recovery without external wake-up circuitry. |
| Portable Medical Monitors | Smart Wearables |
|
Use Scenario: Single-cell LiPo-powered ECG patch requiring >2-year shelf life and guaranteed startup after long-term storage. IC Role / Device Role / Timing Role: Low-leakage supervisor (0.01µA power-down) that maintains state integrity and enables automatic wake-on-charge. Use Value: Eliminates need for mechanical reset switches or external LDOs, reducing bill-of-materials and assembly steps. |
Use Scenario: Fitness tracker with tight board space where battery management must coexist with BLE radio and sensor hub. IC Role / Device Role / Timing Role: Integrated protection unit with SOT25 footprint (2.9 × 1.6 mm) and no external timing components. Use Value: Saves >3mm² PCB area versus discrete comparator + timer solutions and avoids capacitor aging drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5640T252AD-TR | Fixed VCU = 4.250V, no overvoltage charger detection, 1.0µA operating current | Lacks 8.0V overvoltage charger protection and 0V charge function; suited only for basic protection without adapter surge immunity | Select when cost sensitivity outweighs need for charger-side fault coverage and deep-discharge recovery |
| SE9011MAB-AZG | VCU = 4.350V, includes temperature monitoring via external NTC, 2.5µA operating current | Requires external thermistor and pull-up resistors; adds thermal cutoff but increases component count and layout complexity | Choose when thermal safety is mandatory and design can accommodate extra passive components and routing |
Compared with R5640T252AD-TR, AP9101CAK-CHTRG1 provides broader fault coverage (overvoltage charger + 0V charge) at slightly higher quiescent current; versus SE9011MAB-AZG, it trades thermal sensing for smaller footprint and zero external timing elements-making it optimal for space-constrained, adapter-connected 1-cell systems.
Availability
AP9101CAK-CHTRG1 is available at Aetrix Electronics and suitable for power tools, wireless headsets, and portable medical monitors requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for AP9101CAK-CHTRG1 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 high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP9101C series belongs to Diodes' Battery Protection IC product line, engineered specifically for ultra-low-power, single-cell Li-ion/polymer pack safety with minimal external components and automotive-grade process robustness.
FAQ
What is the function of the VM pin on AP9101CAK-CHTRG1?
The VM pin serves as the bidirectional current-sense input referenced to VSS. It detects voltage drops across an external sense resistor (R2) to identify charge overcurrent (≤ –0.095V), discharge overcurrent (≥ +0.095V), and short-circuit events (≥ +0.700V). Internally, it connects to RVMS and RVMD resistors during fault states to enable automatic recovery behaviors such as overdischarge release.
Does AP9101CAK-CHTRG1 support overvoltage protection on the charger input?
Yes. The AP9101CAK-CHTRG1 monitors the voltage between VDD and VM pins and triggers immediate CO pin shutdown if it exceeds 8.0V (±2V), protecting against faulty or mismatched chargers. Release occurs automatically when the voltage falls below 7.3V, with no added delay-unlike its time-delayed battery voltage protections.
How does the 0V battery charge function operate in AP9101CAK-CHTRG1?
This function-factory-enabled in the "K" variant-allows the IC to exit power-down mode and activate CO/DO when a charger applies ≥1.2V to the battery terminals, even if the cell voltage reads 0V. It bypasses the normal under-voltage lockout, enabling safe trickle recharge of deeply depleted cells without external circuitry.
Can AP9101CAK-CHTRG1 be used in automotive applications?
The AP9101CAK-CHTRG1 is not AEC-Q200 qualified and is specified for industrial temperature range (–40°C to +85°C), not automotive grade. Diodes Incorporated offers separate AEC-Q100-qualified variants (e.g., AP9101CxxxAQ) with PPAP capability and IATF 16949 manufacturing; contact Diodes directly for automotive-grade sourcing.
AP9101CAK-CHTRG1 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-CHTRG1 FAQ
1.How can I place an order for AP9101CAK-CHTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP9101CAK-CHTRG1 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-CHTRG1 reliable?
The price and inventory of AP9101CAK-CHTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP9101CAK-CHTRG1 is usually 5 days.
3.What payment methods are accepted for AP9101CAK-CHTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP9101CAK-CHTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP9101CAK-CHTRG1?
AP9101CAK-CHTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP9101CAK-CHTRG1 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-CHTRG1?
For technical support, including AP9101CAK-CHTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP9101CAK-CHTRG1 requirements.
6.How does Aetrix verify that AP9101CAK-CHTRG1 is sourced from the original manufacturer or authorized distributors?
All AP9101CAK-CHTRG1 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-CHTRG1 meets industry standards.
7.What is the process for return or replacement of AP9101CAK-CHTRG1?
All AP9101CAK-CHTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP9101CAK-CHTRG1, 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-CHTRG1 part is unused and in its original packaging.
Return procedure for AP9101CAK-CHTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP9101CAK-CHTRG1 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…
