Overview
The BQ77PL900DL is a highly integrated battery management IC produced by Texas Instruments. Designed for 5 to 10 series lithium-ion battery packs, this IC offers comprehensive protection and monitoring features. It serves as both a standalone battery protection system and an analog front-end (AFE) for host controllers. With its integrated I2C communication interface, the BQ77PL900DL is ideal for applications requiring precise battery management and safety. Its market positioning targets industrial applications, particularly in energy storage systems, portable medical devices, and electric vehicles, where reliable battery protection is critical.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Battery Chemistry | Lithium-Ion, Lithium-Polymer | - | - |
| Input Voltage Range | 7 V to 50 V | V | - |
| Operating Temperature | -40°C to 100°C | °C | - |
| Protection Features | Overvoltage, Undervoltage, Overcurrent, Short Circuit | - | EEPROM programmable |
| Communication Interface | I2C | - | - |
| LDO Outputs | 5V/25mA, 3.3V/25mA | V/mA | For host controller power |
| Package | SSOP-48 | - | - |
Key Features
- Integrated I2C communication for host controller interfacing.
- Programmable protection thresholds via internal EEPROM.
- Dual LDO outputs for powering external circuits.
- Comprehensive safety features including overvoltage, undervoltage, and overcurrent protection.
- Supports both standalone and host-controlled operation modes.
Applications
The BQ77PL900DL is widely used in industrial applications such as energy storage systems, portable medical devices, and electric vehicles. Its ability to provide precise battery monitoring and protection makes it suitable for high-reliability environments. Additionally, it is employed in backup power systems and uninterruptible power supplies (UPS) where battery safety and longevity are paramount.
Q & A
1. What is the primary function of the BQ77PL900DL?
The BQ77PL900DL is a battery management IC designed to protect and monitor 5 to 10 series lithium-ion battery packs.
2. Can the BQ77PL900DL operate without a host controller?
Yes, it can function as a standalone battery protection system.
3. What communication interface does it support?
It supports I2C communication for interfacing with host controllers.
4. What are the LDO outputs used for?
The LDO outputs provide 5V and 3.3V power for host controllers or supporting circuits.
5. Is the protection threshold programmable?
Yes, the protection thresholds are programmable via the internal EEPROM.
6. What is the operating temperature range?
The operating temperature range is -40°C to 100°C.
7. What package does the BQ77PL900DL come in?
It is available in a 48-pin SSOP package.
8. What types of battery chemistries does it support?
It supports lithium-ion and lithium-polymer batteries.
9. What are the key protection features?
It includes overvoltage, undervoltage, overcurrent, and short circuit protection.
10. What are typical applications for this IC?
Typical applications include energy storage systems, electric vehicles, and portable medical devices.
