LTC2946IDE-1#PBF

Product Overview

Category

The LTC2946IDE-1#PBF belongs to the category of integrated circuits (ICs) used in power management applications.

Use

This IC is specifically designed for monitoring battery systems and other power sources. It provides accurate measurements of current, voltage, and charge to enable efficient power management.

Characteristics

• High accuracy: The LTC2946IDE-1#PBF offers precise measurements with low offset and gain errors.
• Wide input voltage range: It can operate with input voltages ranging from 2.7V to 100V.
• Temperature compensation: The IC incorporates temperature compensation to ensure accurate readings across various operating conditions.
• I2C interface: It features an I2C interface for easy communication with microcontrollers or other devices.
• Low power consumption: The LTC2946IDE-1#PBF consumes minimal power during operation, making it suitable for battery-powered applications.

Package

The LTC2946IDE-1#PBF comes in a small form factor package known as the 12-pin DFN (Dual Flat No-Lead) package. This package offers excellent thermal performance and compact size, making it suitable for space-constrained applications.

Essence

The essence of the LTC2946IDE-1#PBF lies in its ability to accurately monitor and measure power-related parameters in battery systems and other power sources. Its high accuracy, wide input voltage range, and low power consumption make it a reliable choice for power management applications.

Packaging/Quantity

The LTC2946IDE-1#PBF is typically available in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 2.7V to 100V
• Current Measurement Range: ±30A
• Voltage Measurement Range: 0V to 100V
• Charge Measurement Range: ±4.096mAh
• I2C Interface: Standard mode (100kHz) and Fast mode (400kHz)
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The LTC2946IDE-1#PBF features the following pin configuration:

1. SDA: I2C Serial Data Input/Output
2. SCL: I2C Serial Clock Input
3. GND: Ground
4. VCC: Power Supply Voltage
5. ALRT: Alert Output
6. VIN: Battery/System Voltage Input
7. IIN: Battery/System Current Input
8. CIN: Battery/System Charge Input
9. VSS: Negative Sense for Voltage and Current Inputs
10. VREF: Reference Voltage Output
11. VBAT: Battery Voltage Output
12. TEMP: Temperature Sensor Input

Functional Features

• Accurate current, voltage, and charge measurements
• Temperature compensation for precise readings in varying conditions
• Programmable alert function for threshold detection
• Internal or external temperature sensor options
• Sleep mode for low power consumption during idle periods
• Configurable I2C address for multiple device operation

Advantages and Disadvantages

Advantages

• High accuracy measurements enable efficient power management.
• Wide input voltage range allows compatibility with various power sources.
• Low power consumption makes it suitable for battery-powered applications.
• Compact package size facilitates integration into space-constrained designs.
• Temperature compensation ensures accurate readings across different operating conditions.

Disadvantages

• Limited current measurement range of ±30A may not be sufficient for high-power applications.
• Requires additional external components for complete functionality.
• Relatively higher cost compared to some alternative models.

Working Principles

The LTC2946IDE-1#PBF operates by measuring the voltage drop across a sense resistor in series with the battery or power source. By monitoring this voltage drop, it can accurately calculate the current flowing through the system. Additionally, it measures the battery voltage and integrates the current over time to determine the charge consumed or delivered.

The IC incorporates temperature compensation techniques to account for variations in temperature, ensuring accurate measurements across different environmental conditions.

Detailed Application Field Plans

The LTC2946IDE-1#PBF finds applications in various fields, including:

1. Battery-powered devices: It is commonly used in portable electronics, such as smartphones, tablets, and wearable devices, to monitor battery status and optimize power consumption.
2. Energy storage systems: The IC enables precise monitoring of current, voltage, and charge in energy storage systems, such as batteries used in renewable energy applications.
3. Power management systems: It plays a crucial role in power management systems, allowing efficient utilization of power sources and optimizing energy consumption.
4. Industrial equipment: The LTC2946IDE-1#PBF is utilized in industrial machinery and equipment to monitor power usage and ensure optimal performance.

Detailed and Complete Alternative Models

1. LTC2947IDE