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S-8254AAWFT-TB-G
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S-8254AAWFT-TB-G

Product Overview

Category

The S-8254AAWFT-TB-G belongs to the category of integrated circuits (ICs) and specifically falls under the battery protection ICs.

Use

This product is primarily used for protecting rechargeable lithium-ion batteries from overcharging, over-discharging, and short-circuiting. It ensures the safe and efficient operation of lithium-ion batteries in various electronic devices.

Characteristics

  • Overcharge protection: Prevents the battery from being charged beyond its safe voltage limit.
  • Over-discharge protection: Safeguards the battery by preventing it from discharging below a certain voltage threshold.
  • Short-circuit protection: Detects and prevents excessive current flow during a short circuit event.
  • Temperature protection: Monitors the battery temperature and triggers protective measures if it exceeds the specified range.
  • Low power consumption: The IC itself consumes minimal power, ensuring efficient battery usage.
  • Compact package: The S-8254AAWFT-TB-G comes in a small form factor package, making it suitable for space-constrained applications.
  • RoHS compliant: This product adheres to the Restriction of Hazardous Substances directive, ensuring environmental friendliness.

Package and Quantity

The S-8254AAWFT-TB-G is available in a thin small outline package (TSOP-6). Each package contains one unit of the IC.

Specifications

  • Input voltage range: 2.5V - 7.0V
  • Overcharge detection voltage: 3.9V ± 25mV
  • Overdischarge detection voltage: 2.3V ± 100mV
  • Overcurrent detection voltage: 0.1V ± 20mV
  • Operating temperature range: -40°C to +85°C
  • Standby current: 0.1µA (typical)
  • Dimensions: 2.9mm x 1.6mm x 0.6mm

Detailed Pin Configuration

The S-8254AAWFT-TB-G has the following pin configuration:

  1. VCC: Power supply input
  2. GND: Ground reference
  3. BAT: Battery connection
  4. CHG: Charging status output
  5. DSG: Discharging status output
  6. N/C: No connection

Functional Features

  1. Overcharge Protection: Monitors the battery voltage and disconnects the charging circuit when it reaches the overcharge threshold.
  2. Overdischarge Protection: Cuts off the discharge path when the battery voltage drops below the specified threshold, preventing damage to the battery.
  3. Short-Circuit Protection: Detects excessive current flow during a short circuit event and interrupts the circuit to prevent further damage.
  4. Temperature Protection: Monitors the battery temperature and triggers protective measures if it exceeds the specified range.
  5. Charging/Discharging Status Outputs: Provides signals indicating the charging or discharging status of the battery.

Advantages and Disadvantages

Advantages

  • Reliable battery protection against overcharging, over-discharging, and short-circuiting.
  • Compact size allows for integration into various electronic devices.
  • Low power consumption ensures efficient battery usage.
  • RoHS compliant, environmentally friendly product.

Disadvantages

  • Limited to lithium-ion battery protection; not suitable for other battery chemistries.
  • Requires proper circuit design and external components for full functionality.

Working Principles

The S-8254AAWFT-TB-G operates by continuously monitoring the battery voltage and current. It compares these values with the predetermined thresholds for overcharge, overdischarge, and short-circuit conditions. If any of these conditions are detected, the IC takes appropriate action to protect the battery. This can include disconnecting the charging circuit, cutting off the discharge path, or interrupting the circuit during a short circuit event.

Detailed Application Field Plans

The S-8254AAWFT-TB-G finds applications in various electronic devices that utilize lithium-ion batteries. Some of the common application fields include:

  1. Mobile Devices: Smartphones, tablets, and portable media players.
  2. Portable Electronics: Digital cameras, handheld gaming consoles, and wearable devices.
  3. Power Tools: Cordless drills, electric screwdrivers, and other battery-powered tools.
  4. Electric Vehicles: Battery management systems for electric cars, e-bikes, and scooters.
  5. Energy Storage Systems: Backup power supplies, solar energy storage, and uninterruptible power sources.

Detailed and Complete Alternative Models

  1. S-8254AABFT-TB-G: Similar to S-8254AAWFT-TB-G but with a different package (SOT-23-6).
  2. S-8254AACFT-TB-G: Offers additional features like overcurrent detection and protection.
  3. S-8254AADFT

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av S-8254AAWFT-TB-G i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of S-8254AAWFT-TB-G in technical solutions:

  1. Q: What is the S-8254AAWFT-TB-G? A: The S-8254AAWFT-TB-G is a lithium-ion battery protection IC designed to prevent overcharging, over-discharging, and short-circuiting of batteries.

  2. Q: What are the key features of the S-8254AAWFT-TB-G? A: The key features include overcharge detection voltage, over-discharge detection voltage, low current consumption, and built-in delay time for protection release.

  3. Q: How does the S-8254AAWFT-TB-G protect against overcharging? A: The IC monitors the battery voltage and disconnects the charging circuit when it reaches the overcharge detection voltage, preventing further charging.

  4. Q: Can the S-8254AAWFT-TB-G protect against over-discharging? A: Yes, the IC detects the battery voltage and cuts off the discharge circuit when it reaches the over-discharge detection voltage, preventing excessive discharge.

  5. Q: Does the S-8254AAWFT-TB-G have short-circuit protection? A: Yes, the IC has built-in short-circuit protection that disconnects the battery from the load when a short circuit is detected.

  6. Q: What is the typical current consumption of the S-8254AAWFT-TB-G? A: The typical current consumption is very low, usually in the microampere range, which helps conserve battery power.

  7. Q: Can the S-8254AAWFT-TB-G be used with different battery chemistries? A: No, the S-8254AAWFT-TB-G is specifically designed for lithium-ion batteries and may not be suitable for other chemistries.

  8. Q: How does the built-in delay time work in the S-8254AAWFT-TB-G? A: The delay time allows a short recovery period after protection activation before reconnection, preventing false triggering due to temporary voltage fluctuations.

  9. Q: What is the operating temperature range of the S-8254AAWFT-TB-G? A: The IC can operate within a wide temperature range, typically from -40°C to +85°C.

  10. Q: Can the S-8254AAWFT-TB-G be used in portable electronic devices? A: Yes, the IC is commonly used in various portable electronic devices like smartphones, tablets, laptops, and power banks to protect their lithium-ion batteries.

Please note that these answers are general and may vary depending on the specific application and requirements.