LTC2946HDE#PBF

Product Overview

The LTC2946HDE#PBF belongs to the category of power management integrated circuits (PMICs). It is designed for use in various applications that require precise monitoring of battery charge and discharge. The LTC2946HDE#PBF is known for its high accuracy, low quiescent current, and small package size, making it suitable for portable electronics, industrial equipment, and automotive systems. This device comes in a 12-pin DFN package and is an essential component for managing battery-powered systems.

Package and Quantity

The LTC2946HDE#PBF is available in a 12-pin DFN package, ensuring a compact footprint for space-constrained designs. It is typically sold in reels or tubes, with quantities varying based on the supplier and customer requirements.

Specifications

• Input Voltage Range: 2.7V to 100V
• Operating Temperature Range: -40°C to 125°C
• Charge Current Measurement Range: ±102.4mV
• Discharge Current Measurement Range: ±51.2mV
• I2C Interface for Configuration and Data Retrieval
• Low Quiescent Current: 1.5μA in Shutdown Mode

Detailed Pin Configuration

The LTC2946HDE#PBF features a 12-pin DFN package with the following pin configuration: 1. VIN+ : Positive Input Voltage 2. VIN- : Negative Input Voltage 3. SDA : I2C Serial Data 4. SCL : I2C Serial Clock 5. ALERT : Alert Indicator 6. GND : Ground 7. VCC : Power Supply 8. CREF : Reference Capacitor 9. VBAT : Battery Voltage Input 10. CC : Charge Current Output 11. DC : Discharge Current Output 12. TS : Temperature Sensor Input

Functional Features

• Accurate Battery Charge and Discharge Monitoring
• Wide Input Voltage Range for Versatile Applications
• I2C Interface for Easy Configuration and Data Retrieval
• Low Quiescent Current for Power Efficiency
• Temperature Sensor Input for Thermal Management

Advantages and Disadvantages

Advantages

• High Accuracy in Charge and Discharge Monitoring
• Wide Input Voltage Range Enables Compatibility with Various Systems
• Small Package Size for Space-Constrained Designs
• Low Quiescent Current Enhances Power Efficiency

Disadvantages

• Limited to I2C Interface for Communication
• May Require External Components for Specific Applications

Working Principles

The LTC2946HDE#PBF operates by measuring the voltage across a sense resistor to accurately determine the charge and discharge currents. It utilizes an internal 14-bit delta-sigma ADC to convert the analog measurements into digital data. The I2C interface allows users to configure the device and retrieve real-time information, enabling precise monitoring and control of battery-related parameters.

Detailed Application Field Plans

The LTC2946HDE#PBF finds extensive application in: - Portable Electronics: Smartphones, Tablets, Wearable Devices - Industrial Equipment: Monitoring Systems, Data Loggers - Automotive Systems: Electric Vehicles, Battery Management

Detailed and Complete Alternative Models

For those seeking alternative models, the following PMICs can be considered: - LTC2947: Offers Extended Voltage Range and Enhanced Features - MAX17201: Provides Integrated Fuel Gauge Functionality - BQ34Z100: Suitable for High-Current Battery Management Applications

In conclusion, the LTC2946HDE#PBF is a versatile and reliable PMIC designed for precise battery charge and discharge monitoring in a wide range of applications. Its high accuracy, low quiescent current, and compact package make it a preferred choice for engineers seeking efficient power management solutions.

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