LTC2946HDE#TRPBF

Product Overview

Category

The LTC2946HDE#TRPBF belongs to the category of integrated circuits (ICs) used in power management applications.

Use

This IC is specifically designed for monitoring battery systems, providing accurate measurements of current, voltage, and charge. It is commonly used in portable electronic devices, electric vehicles, and energy storage systems.

Characteristics

• High accuracy: The LTC2946HDE#TRPBF offers precise measurements with low offset and gain errors.
• Wide input voltage range: It can operate within a wide voltage range, making it suitable for various battery systems.
• Temperature compensation: The IC incorporates temperature compensation techniques to ensure accurate readings across different operating conditions.
• Low power consumption: It consumes minimal power, making it ideal for battery-powered applications.
• Small package size: The LTC2946HDE#TRPBF comes in a compact package, enabling space-efficient designs.

Package and Quantity

The LTC2946HDE#TRPBF is available in a 12-pin DFN (Dual Flat No-Lead) package. It is typically sold in reels containing a specified quantity, usually 250 or 300 units per reel.

Specifications

• Input Voltage Range: 2.7V to 80V
• Current Measurement Range: ±102.4mV (full-scale)
• Voltage Measurement Range: 0V to 80V
• Charge Measurement Range: 0mAh to 65Ah
• Operating Temperature Range: -40°C to 85°C
• Communication Interface: I2C/SMBus

Pin Configuration

The LTC2946HDE#TRPBF features a 12-pin DFN package with the following pin configuration:

1. VIN+ (Positive Input Voltage)
2. VIN- (Negative Input Voltage)
3. VOUT (Voltage Output)
4. SDA (I2C/SMBus Data Line)
5. SCL (I2C/SMBus Clock Line)
6. ALERT (Interrupt Output)
7. GND (Ground)
8. C1+ (Charge Input Positive)
9. C1- (Charge Input Negative)
10. I1+ (Current Input Positive)
11. I1- (Current Input Negative)
12. TEMP (Temperature Sensor)

Functional Features

• Accurate Current, Voltage, and Charge Measurement: The LTC2946HDE#TRPBF provides precise measurements of these parameters, enabling accurate monitoring of battery systems.
• Temperature Compensation: The IC compensates for temperature variations to maintain measurement accuracy.
• Programmable Alarms: It supports programmable alarm thresholds for current, voltage, and charge, allowing for customizable warning signals.
• I2C/SMBus Interface: The LTC2946HDE#TRPBF features a standard digital interface for easy integration with microcontrollers and other devices.
• Coulomb Counter: It includes an integrated coulomb counter, which accurately measures the accumulated charge over time.

Advantages and Disadvantages

Advantages

• High accuracy measurements
• Wide input voltage range
• Low power consumption
• Compact package size
• Temperature compensation for accurate readings

Disadvantages

• Limited current measurement range compared to some specialized ICs
• Requires external components for complete battery management functionality

Working Principles

The LTC2946HDE#TRPBF operates by measuring the voltage across a sense resistor connected in series with the battery system. By monitoring this voltage, along with the temperature and time, it calculates the current and charge values. The IC utilizes an internal ADC (Analog-to-Digital Converter) to convert the analog measurements into digital data, which can be accessed through the I2C/SMBus interface.

Application Field Plans

The LTC2946HDE#TRPBF finds applications in various fields, including: 1. Portable electronic devices: Enables accurate battery monitoring in smartphones, tablets, and wearables. 2. Electric vehicles: Provides precise measurements for battery management systems in electric cars and bikes. 3. Energy storage systems: Monitors the charge and discharge cycles of batteries used in renewable energy storage solutions.

Alternative Models

For users seeking alternative options, the following ICs can be considered: - LTC2947HDE#TRPBF - MAX17055G+T - BQ34Z100-G1

These models offer similar functionality and can be evaluated based on specific requirements.

In conclusion, the LTC2946HDE#TRPBF is a highly accurate integrated circuit designed for battery monitoring applications. With its wide input voltage range, low power consumption, and compact package, it offers significant advantages. However, it has limitations in terms of current measurement range and requires additional components for complete battery management functionality. Its working principle involves measuring voltage across a sense resistor to calculate current and charge values. The IC finds