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BQ29703DSET
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BQ29703DSET

Product Overview

Category

BQ29703DSET belongs to the category of integrated circuits (ICs) specifically designed for battery protection.

Use

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

Characteristics

  • Battery protection IC with advanced features
  • High accuracy in voltage and current monitoring
  • Low power consumption
  • Compact size for easy integration into various applications

Package

BQ29703DSET is available in a small outline package (SOT) with 8 pins. The package provides excellent thermal performance and mechanical stability.

Essence

The essence of BQ29703DSET lies in its ability to safeguard lithium-ion batteries by accurately monitoring their voltage and current levels, preventing potential hazards and extending battery life.

Packaging/Quantity

This product is typically sold in reels containing a specific quantity of units. The exact packaging and quantity may vary depending on the supplier.

Specifications

  • Input Voltage Range: 2.5V - 26V
  • Overvoltage Protection Threshold: Adjustable (3.0V - 4.6V)
  • Undervoltage Protection Threshold: Adjustable (1.8V - 3.5V)
  • Overcurrent Detection Threshold: Adjustable (10mV - 100mV)
  • Operating Temperature Range: -40°C to +85°C
  • Quiescent Current: <10µA

Detailed Pin Configuration

  1. VDD: Power supply input
  2. GND: Ground reference
  3. BAT: Battery connection
  4. OUT: Output for external control circuitry
  5. PROTECT: Output indicating battery protection status
  6. SRN: Sense resistor negative terminal
  7. SRP: Sense resistor positive terminal
  8. VREF: Reference voltage output

Functional Features

  • Overvoltage protection: Monitors battery voltage and disconnects the load when it exceeds the set threshold.
  • Undervoltage protection: Cuts off the load when the battery voltage drops below the specified threshold.
  • Overcurrent detection: Detects excessive current flow and triggers protection mechanisms.
  • Short-circuit protection: Safeguards against short circuits, preventing damage to the battery and connected devices.
  • Temperature monitoring: Monitors the battery temperature and initiates protective measures if it exceeds safe limits.

Advantages and Disadvantages

Advantages

  • High accuracy in voltage and current monitoring ensures reliable battery protection.
  • Low power consumption minimizes energy wastage.
  • Compact size allows for easy integration into various applications.
  • Adjustable thresholds provide flexibility for different battery types and requirements.

Disadvantages

  • Limited to lithium-ion battery protection; not suitable for other battery chemistries.
  • Requires external control circuitry for complete battery management.

Working Principles

BQ29703DSET operates by continuously monitoring the battery voltage, current, and temperature. It compares these values with the pre-set thresholds to determine if any protection action is required. When a fault condition is detected, such as overvoltage, undervoltage, or overcurrent, the IC disconnects the load from the battery to prevent further damage. It also provides an output signal indicating the battery protection status.

Detailed Application Field Plans

BQ29703DSET finds extensive application in various battery-powered devices, including: 1. Portable electronic devices (e.g., smartphones, tablets) 2. Electric vehicles and hybrid electric vehicles 3. Power tools and cordless appliances 4. Energy storage systems 5. Medical devices 6. Industrial equipment

Detailed and Complete Alternative Models

  1. BQ29702DSET: Similar to BQ29703DSET but with a different pin configuration.
  2. BQ29704DSET: Offers additional features such as cell balancing and fuel gauge functionality.
  3. BQ29705DSET: Specifically designed for higher voltage battery systems.

These alternative models provide similar battery protection capabilities, but with slight variations in specifications and features.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av BQ29703DSET i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of BQ29703DSET in technical solutions:

  1. Question: What is the BQ29703DSET?
    Answer: The BQ29703DSET is a battery protection and authentication IC designed for use in technical solutions.

  2. Question: What is the purpose of the BQ29703DSET?
    Answer: The BQ29703DSET is used to protect batteries from overcharging, overdischarging, and short circuits, while also providing authentication features.

  3. Question: How does the BQ29703DSET protect batteries from overcharging?
    Answer: The BQ29703DSET monitors the voltage of the battery and disconnects it from the charging source when it reaches a predetermined threshold.

  4. Question: Can the BQ29703DSET be used with different types of batteries?
    Answer: Yes, the BQ29703DSET is compatible with various battery chemistries, including lithium-ion and lithium-polymer.

  5. Question: What is the role of authentication in the BQ29703DSET?
    Answer: The BQ29703DSET includes authentication features to ensure that only genuine batteries are used in the system, preventing counterfeit or unsafe batteries from being used.

  6. Question: How does the BQ29703DSET authenticate batteries?
    Answer: The BQ29703DSET uses a unique identification code stored in the battery to verify its authenticity. If the code doesn't match, the IC will prevent the battery from being used.

  7. Question: Can the BQ29703DSET be used in portable devices?
    Answer: Yes, the BQ29703DSET is commonly used in portable devices such as smartphones, tablets, and laptops to protect their batteries.

  8. Question: Does the BQ29703DSET have any built-in temperature monitoring?
    Answer: Yes, the BQ29703DSET includes a temperature sensor to monitor the battery's temperature and protect it from overheating.

  9. Question: Can the BQ29703DSET be used in automotive applications?
    Answer: Yes, the BQ29703DSET is suitable for use in automotive applications to protect the vehicle's battery from various faults.

  10. Question: Is the BQ29703DSET easy to integrate into existing systems?
    Answer: Yes, the BQ29703DSET comes in a compact package and has a simple interface, making it relatively easy to integrate into existing technical solutions.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.