BQ2057WSN

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BQ2057WSN

IC BATT CHG LI-ION 2CELL 8SOIC

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  • 包 8-SOIC
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規格

Package Tube
ProductStatus Active
BatteryChemistry Lithium Ion/Polymer
NumberofCells 2
Current-Charging Constant - Programmable
ProgrammableFeatures Current
BatteryPackVoltage 8.4V
Voltage-Supply(Max) 15V
OperatingTemperature -20°C ~ 70°C (TA)
MountingType Surface Mount
Package/Case 8-SOIC (0.154, 3.90mm Width)

概述

Description

The BQ2057WSN is a battery charge management IC developed by Texas Instruments. It is designed for use in applications requiring precision battery charging, particularly for lithium-ion and lithium-polymer battery chemistries. The IC is part of the broader BQ2057 family, known for its linear charge management functionality.
Key features of the BQ2057WSN include its ability to regulate the charging process through pre-charge, fast-charge, and top-off phases, ensuring optimal battery health and longevity. It can handle charging currents up to 1.2A and operates with a wide input voltage range, making it suitable for various power sources.
The device offers flexibility with its programmable charge termination and charge current settings, allowing customization based on specific battery requirements. Additionally, it includes safety features such as thermal regulation, battery temperature monitoring, and protection against overvoltage, overcurrent, and short-circuit conditions.
The BQ2057WSN is typically used in portable electronics, wearable devices, and any application where efficient and reliable battery charging is crucial. Its compact design and efficiency make it a popular choice among designers seeking an effective battery charging solution.

Features

The BQ2057WSN is a highly efficient, linear charge management device designed for single-cell lithium-ion and lithium-polymer batteries. It provides a simple and cost-effective solution for battery charging applications. Key features include:
1. Charge Management: It ensures precise current and voltage regulation for optimal battery charging.

2. Battery Detection: Automatically detects battery presence and initiates charging without the need for external control.
3. Charge Status Indication: Equipped with LED drivers for visual indication of charge status, allowing users to easily monitor the charging process.
4. Thermal Regulation: The device includes thermal regulation to prevent overheating by reducing the charge current under high-temperature conditions.
5. Programmable Charge Current: Offers flexibility with programmable charge currents, facilitating a wide range of applications.
6. Pre-charge Conditioning: Supports a pre-charge conditioning function for deeply discharged batteries to extend battery life and enhance safety.
7. Low Quiescent Current: Features low quiescent current to maximize power efficiency.
8. Small Package: Available in a compact package, making it suitable for space-constrained applications.
The BQ2057WSN is ideal for portable devices where efficient and reliable battery charging is crucial.

Package

The BQ2057WSN is a battery charge management IC from Texas Instruments. It is typically housed in a small surface-mount package type known as SOT-23, which is designed for compact applications.

Pinout

The BQ2057WSN is a battery charger IC designed for single-cell lithium-ion and lithium-polymer batteries. It typically comes in an 8-pin package. Here is a brief overview of its pin functions:
1. VCC: Power supply input.
2. GND: Ground pin.
3. OUT: Output pin connected to the battery.
4. BAT: Battery voltage sense input.
5. PROG: Charge current program, enable, and monitor pin.
6. STAT1: Charge status output 1.
7. STAT2: Charge status output 2.
8. TS: Temperature sense input.
The BQ2057WSN manages the charging process, including pre-charge, fast-charge, and termination, by monitoring the battery's voltage and current. It also features status indication and safety protections like thermal regulation and a programmable charge current limit.

Manufacturer

The BQ2057WSN is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide array of electronic components, including integrated circuits and embedded processors. The company is well-known for its innovations in analog technology, embedded processing, and wireless technologies. TI's products are used in various industries, such as automotive, industrial, consumer electronics, and communications. The BQ2057WSN is part of TI's battery management portfolio, which includes solutions for battery charging, gauging, protection, and monitoring.

Application

The BQ2057WSN is a battery management IC typically used in applications requiring efficient battery charging and management. Its primary application areas include portable electronics, such as smartphones, tablets, and wearable devices, where it manages lithium-ion and lithium-polymer batteries. It is also used in power banks, electronic toys, and handheld devices, ensuring safe and efficient charging cycles. The IC provides functions like charge termination and pre-charge conditioning, making it suitable for any application needing reliable battery charging and protection.

Equivalent

The BQ2057WSN is a battery charge management IC. Equivalent products include the Microchip MCP73831, Linear Technology (now Analog Devices) LTC4054, and the Maxim Integrated MAX1811. These ICs are designed for similar battery charging applications and offer comparable features like programmable charge current, charge status indication, and single-cell Li-Ion or Li-Polymer battery compatibility. Always verify specific requirements and pin compatibility when selecting alternatives.

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