BQ7790509PW - Product Overview

Basic Information

• Product Name: BQ7790509PW
• Category: Integrated Circuit (IC)
• Use: Battery Management System (BMS)
• Characteristics:
  • High-performance IC for battery protection and monitoring
  • Designed for use in various applications requiring reliable battery management
  • Offers advanced features and functionality
• Package: PowerPAD HTSSOP package
• Essence: Ensures safe and efficient operation of batteries
• Packaging/Quantity: Available in reels, quantity varies based on supplier

Specifications

• Manufacturer: Texas Instruments
• Operating Voltage Range: 2.7V to 4.8V
• Number of Cells Supported: Up to 5 series cells
• Protection Features:
  • Overvoltage Protection (OVP)
  • Undervoltage Protection (UVP)
  • Overcurrent Protection (OCP)
  • Short Circuit Protection (SCP)
  • Overtemperature Protection (OTP)
• Communication Interface: I2C/SMBus compatible
• Temperature Range: -40°C to +85°C
• Package Dimensions: 20-pin HTSSOP (5mm x 6.4mm)

Detailed Pin Configuration

The BQ7790509PW has a total of 20 pins. The pin configuration is as follows:

1. VDD - Power supply input
2. SDA - I2C data line
3. SCL - I2C clock line
4. ALERT - Interrupt output
5. TS1 - Temperature sense input 1
6. TS2 - Temperature sense input 2
7. BAT - Battery voltage sense input
8. GND - Ground
9. VC1 - Cell 1 voltage sense input
10. VC2 - Cell 2 voltage sense input
11. VC3 - Cell 3 voltage sense input
12. VC4 - Cell 4 voltage sense input
13. VC5 - Cell 5 voltage sense input
14. VSS - Negative supply input
15. VDD - Power supply input
16. SDA - I2C data line
17. SCL - I2C clock line
18. ALERT - Interrupt output
19. TS1 - Temperature sense input 1
20. TS2 - Temperature sense input 2

Functional Features

• Accurate monitoring and protection of battery cells
• Real-time voltage, current, and temperature measurements
• Overvoltage and undervoltage protection to prevent cell damage
• Overcurrent and short circuit protection for safe operation
• Temperature monitoring for thermal management
• Communication interface for system integration and control

Advantages and Disadvantages

Advantages: - High-performance IC with advanced features - Reliable battery protection and monitoring - Suitable for various applications - Compact package size for space-constrained designs - Wide operating temperature range

Disadvantages: - Limited support for a maximum of 5 series cells - Requires external microcontroller or host system for full functionality

Working Principles

The BQ7790509PW is designed to ensure the safe and efficient operation of batteries in various applications. It utilizes a combination of voltage, current, and temperature sensing to monitor the battery's health and protect it from potential hazards. The IC continuously measures the voltage across each cell, as well as the overall battery voltage and current. It compares these values against predefined thresholds to trigger appropriate protection mechanisms such as overvoltage, undervoltage, overcurrent, and short circuit protection. Additionally, the IC monitors the battery temperature to prevent overheating. The BQ7790509PW communicates with the host system or microcontroller through the I2C/SMBus interface, providing real-time data and allowing for control and configuration.

Detailed Application Field Plans

The BQ7790509PW is widely used in battery-powered applications that require reliable battery management. Some of the common application fields include:

1. Electric Vehicles (EVs) and Hybrid Electric Vehicles (HEVs)
2. Portable Medical Devices
3. Uninterruptible Power Supplies (UPS)
4. Energy Storage Systems (ESS)
5. Industrial Equipment
6. Consumer Electronics

In these applications, the BQ7790509PW ensures the safe and efficient operation of batteries, prolonging their lifespan and preventing potential hazards.

Detailed and Complete Alternative Models

• BQ7790500PW: Similar functionality with support for up to 4 series cells
• BQ7790510PW: Enhanced version with additional protection features and support for up to 6 series cells
• BQ7790520PW: Higher voltage variant supporting up to 10 series cells

These alternative models offer similar functionality and can be considered based on specific application requirements.

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