BQ7790503PW - Product Overview

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Battery Management System (BMS)
• Characteristics:
  • High precision voltage and current monitoring
  • Overvoltage and undervoltage protection
  • Temperature sensing and thermal management
  • Communication interface for data exchange
• Package: PowerPAD™ TSSOP-38
• Essence: BQ7790503PW is a highly integrated IC designed for battery management systems, providing comprehensive monitoring and protection features.
• Packaging/Quantity: Available in tape and reel packaging with 250 units per reel.

Specifications

• Operating Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Number of Pins: 38
• Communication Interface: I2C
• Battery Cell Compatibility: Li-Ion, Li-Polymer, LiFePO4

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground reference
3. SDA: I2C data line
4. SCL: I2C clock line
5. ALERT: Interrupt output
6. TS1: Temperature sense input 1
7. TS2: Temperature sense input 2
8. BAT: Battery pack positive terminal
9. PACK-: Battery pack negative terminal
10. CELL1: Cell 1 voltage sense input
11. CELL2: Cell 2 voltage sense input
12. CELL3: Cell 3 voltage sense input
13. CELL4: Cell 4 voltage sense input
14. CELL5: Cell 5 voltage sense input
15. CELL6: Cell 6 voltage sense input
16. CELL7: Cell 7 voltage sense input
17. CELL8: Cell 8 voltage sense input
18. CELL9: Cell 9 voltage sense input
19. CELL10: Cell 10 voltage sense input
20. CELL11: Cell 11 voltage sense input
21. CELL12: Cell 12 voltage sense input
22. CELL13: Cell 13 voltage sense input
23. CELL14: Cell 14 voltage sense input
24. CELL15: Cell 15 voltage sense input
25. CELL16: Cell 16 voltage sense input
26. VREF: Reference voltage output
27. VSS: Negative reference voltage output
28. VBAT: Battery voltage output
29. VCELL: Cell voltage output
30. TS1-: Temperature sense input 1 negative terminal
31. TS2-: Temperature sense input 2 negative terminal
32. BAT-: Battery pack negative terminal
33. PACK+: Battery pack positive terminal
34. VDD: Power supply input
35. GND: Ground reference
36. SDA: I2C data line
37. SCL: I2C clock line
38. ALERT: Interrupt output

Functional Features

• Accurate monitoring of battery voltage and current levels
• Protection against overvoltage and undervoltage conditions
• Temperature sensing for thermal management
• I2C communication interface for data exchange with external systems
• Configurable interrupt output for system alerts

Advantages

• High precision monitoring ensures accurate battery management
• Comprehensive protection features enhance battery safety
• Flexible I2C interface allows seamless integration with other components
• Compact package design saves board space
• Wide operating voltage range enables compatibility with various battery types

Disadvantages

• Limited number of voltage sense inputs may restrict use in large battery packs
• Requires external microcontroller or host system for complete functionality

Working Principles

The BQ7790503PW operates by continuously monitoring the voltage and current levels of each battery cell in a pack. It compares these values against predefined thresholds to detect overvoltage, undervoltage, or abnormal conditions. The IC also incorporates temperature sensing to prevent overheating. Communication with external systems is facilitated through the I2C interface, allowing for real-time data exchange and system control.

Detailed Application Field Plans

The BQ7790503PW is primarily used in battery management systems for various applications, including: - Electric vehicles (EVs) and hybrid electric vehicles (HEVs) - Energy storage systems (ESS) - Portable electronic devices - Uninterruptible power supplies (UPS) - Industrial equipment

Detailed and Complete Alternative Models

1. BQ7790504PW: Similar to BQ7790503PW but with additional features for advanced battery management.
2. BQ7790502PW: A lower-cost alternative with basic battery monitoring and protection capabilities.
3. BQ7790505PW: Designed for high-voltage battery packs with extended voltage range support.

Note: These alternative models offer