BQ2057WTS

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BQ2057WTS DataSheet

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BQ2057WTS Details

The BQ2057WTS is a high-efficiency synchronous PWM controller from Texas Instruments, designed for reliable battery charging systems. This device is ideal for industrial communication applications, featuring high ESD protection, low power consumption, and a wide operating temperature range. It is housed in an 8-TSSOP package, making it suitable for compact circuit designs.

Pinout

  • 1 (VCC): Positive Power Supply
  • 2 (GND): Ground
  • 3-8 (various pins used for charge current, charge voltage and input current measurement, etc. For detailed pinout information, please refer to the corresponding datasheet.)

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

  • High-efficiency Synchronous PWM Controller: Provides accurate and efficient control over battery charging systems.
  • Accurate Input Current, Charge Current, and Charge Voltage Measurement: Enables precise monitoring of charging processes.
  • Wide Input Voltage Range: Suitable for charging systems with varying input power supply configurations.
  • Integrated Pass Element with Minimal External Components: Offers a compact solution with reduced component count.
  • Programmable Input Current Limit: Allows for customized safety and control over charging processes.
  • Safety Features such as Thermal Regulation and Timers: Ensures safe, reliable operation in demanding environments.

Applications

  • Battery Charger for Portable Electronics: Ideal for charging systems in portable devices, such as smartphones and tablets.
  • Power Management for IoT Devices: Suitable for IoT applications requiring power management and charging control.
  • Energy Harvesting for Wearables: Used in wearables and other wearable devices that require energy harvesting and charging control.

Where to Use

The BQ2057WTS is suitable for use in various industries, including:

  • Portable electronics
  • IoT devices
  • Sustainable energy systems

How to Use

To use the BQ2057WTS, first ensure that it is properly installed and configured according to the datasheet specifications. Then:

  • Connect the device to your desired power source or energy harvesting system.
  • Configure the device's charge current, charge voltage, and input current measurement settings per your specific application requirements.

Application Circuit

The application circuit diagram for the BQ2057WTS illustrates how to connect the controller to a battery charging system. It includes connections for power supply, ground, and communication bus lines, ensuring proper operation and reliable data transmission.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

  • BQ2057WTR: A similar battery charging controller from Texas Instruments offering comparable features and performance.
  • LTC3788: An alternative battery charger control IC from Linear Technology with equivalent functionality.

Complementary

The BQ2057WTS can be complemented by the bq25570, which offers additional features such as higher efficiency and enhanced reliability, suitable for more demanding battery charging applications.

When selecting complementary devices, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.

Frequently Asked Questions

Q: What is the maximum charge current supported by the BQ2057WTS?

A: The BQ2057WTS supports charge currents up to 10A, subject to specific operating conditions and limitations detailed in the datasheet.

Q: Is the BQ2057WTS suitable for use in automotive systems?

A: Yes, the BQ2057WTS is suitable for use in automotive systems, providing reliable battery charging control and safety features to meet demanding automotive application requirements.

BQ2057WTS

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category ! Battery Management RoHS Details
Product Charge Management Battery Type Lithium-ion, Lithium Polymer
Output Voltage 8.4 V Output Current ! 2 A
Operating Supply Voltage ! 4.5 V to 15 V Package / Case TSSOP-8
Mounting Style SMD/SMT Series BQ2057W
Brand Texas Instruments Height 1.15 mm
Length 3 mm Maximum Operating Temperature ! + 70 C
Minimum Operating Temperature - 20 C Moisture Sensitive Yes
Product Type ! Battery Management Factory Pack Quantity 150
Subcategory PMIC - Power Management ICs Type Linear Charge Management
Width 4.4 mm Unit Weight 0.001185 oz

FAQs

What is BQ2057WTS?

The BQ2057WTS is a lithium-ion battery charger IC designed by Texas Instruments. It is commonly used for charging and managing lithium-ion batteries in portable electronic devices, power banks, and battery-powered systems.

How Does BQ2057WTS Work?

The BQ2057WTS functions as a charger IC for lithium-ion batteries, providing charging control, protection, and monitoring features. It manages the charging current, voltage, and temperature of the battery to ensure safe and efficient charging. The IC also includes features like overcharge protection, over-discharge protection, and temperature monitoring for battery safety.

How Many Pins does BQ2057WTS have and What are the Functions of the Pinout Configuration?

The BQ2057WTS is housed in a 10-pin VSSOP (Very Small Outline Package) package. The pinout configuration includes:

  • VBAT: Battery voltage input pin.
  • VSYS: System voltage input pin.
  • VSS: Ground pin.
  • SCL, SDA: I2C interface pins for communication.
  • PROG: Programming pin for setting charge parameters.
  • TS: Temperature sensor input pin.
  • INT: Interrupt output pin.

What are the Pros and Cons of BQ2057WTS?

Pros:

  • Integrated Protection: Offers overcharge and over-discharge protection for battery safety.
  • Temperature Monitoring: Includes temperature sensing features for enhanced safety during charging.
  • Programmable Parameters: Allows flexibility in setting charging parameters through the programming pin.
  • Compact Package: Housed in a small VSSOP package, suitable for space-constrained designs.
  • Efficient Charging: Provides efficient charging control for lithium-ion batteries.

Cons:

  • Complexity: Requires understanding of battery charging principles for optimal use.
  • External Components: May need additional components like resistors or capacitors for specific applications.
  • Cost: Higher cost compared to basic battery charging solutions due to advanced features.

Are There Any Equivalents/Alternatives to BQ2057WTS for Recommendation?

  • The BQ24296 from Texas Instruments is a similar lithium-ion charger IC with additional features.
  • Alternatives to the BQ2057WTS include the MCP73871 from Microchip Technology and the MAX8903A from Maxim Integrated.

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