DS1886T+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: The DS1886T+ is a versatile integrated circuit primarily used for controlling and monitoring battery charging and discharging processes in various electronic devices.

Characteristics: - High precision voltage and current measurement capabilities - Programmable charging and discharging profiles - Wide operating temperature range (-40°C to +85°C) - Low power consumption - Compact and durable package

Package: The DS1886T+ is available in a small form factor package, making it suitable for space-constrained applications.

Essence: The DS1886T+ is designed to provide accurate and efficient control over battery charging and discharging operations, ensuring optimal performance and longevity of the battery.

Packaging/Quantity: The DS1886T+ is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Operating Current: 1.5mA (typical)
• Voltage Measurement Resolution: 10mV
• Current Measurement Resolution: 50µA
• Communication Interface: I2C
• Programmable Charging Profiles: Constant Current (CC), Constant Voltage (CV), Trickle Charge
• Programmable Discharging Profiles: Constant Current (CC), Constant Power (CP)
• Protection Features: Overvoltage, Undervoltage, Overcurrent, Short Circuit
• Dimensions: 3mm x 3mm

Detailed Pin Configuration

The DS1886T+ features a total of 16 pins, each serving a specific function. The pin configuration is as follows:

1. VDD: Power supply input
2. GND: Ground reference
3. SDA: I2C data line
4. SCL: I2C clock line
5. ALERT: Interrupt output
6. VBAT: Battery voltage input
7. VCC: Voltage reference output
8. VSS: Ground reference
9. BATTEMP: Battery temperature input
10. CHG: Charging control pin
11. DISCHG: Discharging control pin
12. CCSET: Constant current set pin
13. CVSET: Constant voltage set pin
14. CPSET: Constant power set pin
15. NC: No connection
16. NC: No connection

Functional Features

The DS1886T+ offers a range of functional features that enhance battery management capabilities:

1. Accurate Voltage and Current Measurement: The integrated circuit provides precise measurement of battery voltage and charging/discharging current, enabling accurate monitoring and control.

2. Programmable Charging and Discharging Profiles: Users can define custom charging and discharging profiles through the I2C interface, allowing flexibility in adapting to different battery chemistries and application requirements.

3. Protection Mechanisms: The DS1886T+ incorporates various protection mechanisms such as overvoltage, undervoltage, overcurrent, and short circuit protection, ensuring safe operation and preventing damage to the battery and connected devices.

4. Temperature Monitoring: The IC includes a dedicated input for measuring battery temperature, enabling temperature-based charging and discharging control strategies.

Advantages and Disadvantages

Advantages: - High precision measurement capabilities - Flexible programmability - Comprehensive protection features - Compact form factor - Wide operating temperature range

Disadvantages: - Limited availability of alternative models - Relatively higher cost compared to simpler battery management solutions

Working Principles

The DS1886T+ operates based on the principles of voltage and current regulation. It continuously measures the battery voltage and current using its internal ADC (Analog-to-Digital Converter) and compares them against the programmed charging and discharging profiles. Based on these measurements, it adjusts the charging or discharging current to maintain the desired voltage levels.

The IC communicates with the host system through the I2C interface, allowing for real-time monitoring of battery parameters and control of charging/discharging operations.

Detailed Application Field Plans

The DS1886T+ finds applications in various electronic devices that require precise battery management. Some of the potential application fields include:

1. Portable Electronics: Smartphones, tablets, portable gaming consoles, and wearable devices can benefit from the accurate battery management capabilities of the DS1886T+, ensuring optimal battery performance and extending device runtime.

2. Industrial Equipment: Battery-powered industrial equipment such as handheld meters, data loggers, and wireless sensors can utilize the DS1886T+ for efficient battery charging and discharging control, enhancing reliability and longevity.

3. Medical Devices: Medical devices like patient monitors, infusion pumps, and portable diagnostic equipment often rely on batteries. The DS1886T+ enables precise battery management in these critical applications, ensuring uninterrupted operation and accurate power delivery.

4. Automotive