Texas Instruments
画像はイメージの場合もございます。
商品詳細は仕様をご覧ください。
BQ25872YFFT
詳細を表示 DataSheets

BQ25872YFFT - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: Battery Charger

Characteristics: - High efficiency - Fast charging capability - Wide input voltage range - Multiple protection features

Package: 20-pin, 3.5mm x 4.5mm, WCSP (Wafer Chip Scale Package)

Essence: The BQ25872YFFT is a highly efficient battery charger IC designed for fast charging applications.

Packaging/Quantity: Available in tape and reel packaging with 3000 units per reel.

Specifications

The BQ25872YFFT has the following specifications:

  • Input Voltage Range: 3.9V to 14V
  • Output Voltage Range: 3.9V to 14V
  • Charging Current Range: Up to 3A
  • Operating Temperature Range: -40°C to +85°C
  • Charging Efficiency: Up to 95%
  • Charge Termination Accuracy: ±0.5%

Detailed Pin Configuration

The BQ25872YFFT has a 20-pin configuration with the following pin functions:

  1. VBUS: Input voltage from USB or adapter
  2. AC: Adapter current sense input
  3. TS: Thermistor input for temperature monitoring
  4. STAT: Status output indicating charging status
  5. PG: Power good output indicating system power status
  6. ISET: Charging current setting input
  7. PROG: Programming resistor input for various settings
  8. TS/DPDM: Thermistor input or DPDM detection input
  9. SRN: Serial interface receive data input
  10. SCLK: Serial interface clock input
  11. SDATA: Serial interface data input/output
  12. INT: Interrupt output
  13. BAT: Battery voltage sense input
  14. TS/DPDM: Thermistor input or DPDM detection input
  15. SRP: Serial interface transmit data output
  16. SRN: Serial interface receive data input
  17. SCLK: Serial interface clock input
  18. SDATA: Serial interface data input/output
  19. INT: Interrupt output
  20. GND: Ground

Functional Features

The BQ25872YFFT offers the following functional features:

  • Battery charging with high efficiency
  • Support for various battery chemistries (Li-Ion, Li-Polymer)
  • Input current and voltage regulation
  • Thermal regulation and protection
  • Overvoltage and overcurrent protection
  • Charge termination and safety timers
  • System power status indication

Advantages and Disadvantages

Advantages: - High charging efficiency reduces charging time - Wide input voltage range allows compatibility with different power sources - Multiple protection features ensure safe charging - Compact package size saves board space

Disadvantages: - Limited to charging specific battery chemistries (Li-Ion, Li-Polymer) - Requires external programming resistor for certain settings

Working Principles

The BQ25872YFFT operates by regulating the input voltage and current to charge the connected battery. It utilizes a switching regulator to achieve high charging efficiency. The IC monitors the battery temperature, voltage, and current during the charging process to ensure safe operation. Various protection mechanisms are implemented to prevent overcharging, overvoltage, and overheating.

Detailed Application Field Plans

The BQ25872YFFT is suitable for a wide range of applications, including: - Smartphones and tablets - Portable electronic devices - Wearable devices - Power banks - Industrial equipment

Detailed and Complete Alternative Models

  1. BQ25871YFFT: Similar to BQ25872YFFT but with lower charging current capability.
  2. BQ25875YFFT: Similar to BQ25872YFFT but with additional USB OTG (On-The-Go) support.
  3. BQ25878YFFT: Similar to BQ25872YFFT but with higher charging current capability.

These alternative models offer similar functionality and can be considered based on specific application requirements.

Word count: 511 words

技術ソリューションにおける BQ25872YFFT の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of BQ25872YFFT in technical solutions:

  1. Q: What is the BQ25872YFFT? A: The BQ25872YFFT is a highly integrated single-cell Li-Ion battery charger with Power Path management for various portable applications.

  2. Q: What is Power Path management? A: Power Path management allows simultaneous charging of the battery and powering the system from a USB source, ensuring uninterrupted operation.

  3. Q: What is the input voltage range supported by BQ25872YFFT? A: The BQ25872YFFT supports an input voltage range from 3.9V to 14V, making it compatible with various power sources.

  4. Q: Can BQ25872YFFT charge multiple battery chemistries? A: No, the BQ25872YFFT is designed specifically for single-cell Li-Ion or Li-Polymer batteries.

  5. Q: Does BQ25872YFFT support fast charging? A: Yes, the BQ25872YFFT supports various fast charging protocols like USB BC1.2, Apple, and Qualcomm Quick Charge.

  6. Q: What is the maximum charging current supported by BQ25872YFFT? A: The BQ25872YFFT can support a maximum charging current of up to 3A, allowing for faster charging times.

  7. Q: Does BQ25872YFFT have built-in thermal regulation? A: Yes, the BQ25872YFFT has a built-in thermal regulation feature that adjusts the charging current based on the temperature to prevent overheating.

  8. Q: Can BQ25872YFFT operate in low-power mode? A: Yes, the BQ25872YFFT has a low-power mode that reduces the quiescent current to minimize power consumption when not in use.

  9. Q: Does BQ25872YFFT have any safety features? A: Yes, the BQ25872YFFT incorporates various safety features like overvoltage protection, overcurrent protection, and thermal shutdown to ensure safe charging.

  10. Q: What are some typical applications of BQ25872YFFT? A: The BQ25872YFFT is commonly used in smartphones, tablets, portable media players, Bluetooth speakers, and other portable electronic devices.

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