DS2740U+T&R

Product Overview

• Category: Integrated Circuit
• Use: Battery Fuel Gauge
• Characteristics: Accurate monitoring of battery capacity, temperature compensation, low power consumption
• Package: SOT-23-6
• Essence: Monitors and reports the remaining capacity of a rechargeable battery
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Operating Voltage Range: 2.7V to 5.5V
• Temperature Range: -40°C to +85°C
• Accuracy: ±1% (typical)
• Resolution: 10-bit ADC
• Communication Interface: I2C
• Battery Types Supported: Li-Ion, Li-Polymer, NiMH, NiCd

Detailed Pin Configuration

The DS2740U+T&R has a total of six pins arranged as follows:

1. VDD: Power supply input pin
2. GND: Ground reference pin
3. SDA: Serial Data Line for I2C communication
4. SCL: Serial Clock Line for I2C communication
5. BAT: Battery voltage sense input pin
6. THERM: Temperature sense input pin

Functional Features

• Accurate measurement of battery capacity using patented algorithms
• Temperature compensation for precise readings in varying environmental conditions
• Low power consumption for extended battery life
• Built-in protection against overcharging and over-discharging

Advantages and Disadvantages

Advantages: - Accurate monitoring of battery capacity helps optimize device performance - Temperature compensation ensures reliable readings in different operating conditions - Low power consumption minimizes energy usage and extends battery life - Built-in protection safeguards the battery from damage due to overcharging or over-discharging

Disadvantages: - Limited compatibility with specific battery types - Requires an I2C interface for communication

Working Principles

The DS2740U+T&R utilizes a combination of voltage and temperature measurements to accurately estimate the remaining capacity of a rechargeable battery. It employs patented algorithms to compensate for temperature variations, ensuring precise readings in different environments. The integrated circuit continuously monitors the battery voltage and reports the information through the I2C interface.

Detailed Application Field Plans

The DS2740U+T&R is widely used in various applications that require accurate monitoring of battery capacity. Some common application fields include:

1. Portable Electronics: Smartphones, tablets, laptops, and other portable devices benefit from precise battery capacity monitoring to optimize performance and provide accurate battery life estimates.
2. Medical Devices: Battery-powered medical equipment relies on accurate fuel gauging to ensure uninterrupted operation and timely replacement of batteries.
3. Industrial Equipment: Battery-powered tools, sensors, and other industrial devices can benefit from the DS2740U+T&R's low power consumption and accurate capacity monitoring.
4. Automotive: Electric vehicles and hybrid cars utilize the DS2740U+T&R to monitor the state of charge and estimate the remaining driving range.

Detailed and Complete Alternative Models

1. DS2780U+T&R: Similar to DS2740U+T&R with additional features such as coulomb counter and programmable alarm thresholds.
2. MAX17043G+T: Fuel gauge IC with high accuracy and low power consumption, suitable for Li-Ion/Li-Polymer batteries.
3. BQ27541DRZR-G1: Advanced fuel gauge IC with integrated protection features and support for multiple battery chemistries.

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