The BQ76952PFBR is a battery management IC (integrated circuit) manufactured by Texas Instruments (TI). It's typically used in multi-cell lithium-ion or lithium-polymer battery packs. The device helps to monitor and manage the battery's voltage, current, temperature, and state of charge, providing protection features such as overvoltage, undervoltage, overcurrent, and temperature limits.
Package:
Package Type: The BQ76952PFBR comes in a QFN (Quad Flat No-lead) package. Pin Count: The BQ76952PFBR has a 64-pin QFN package.Pinout Description:
Below is a detailed description of all 64 pins of the BQ76952PFBR, categorized by their specific functions:
Pin Number Pin Name Description 1 VSTOR Power supply for the device, connects to the battery pack positive terminal. 2 VSS Ground pin, connects to the system ground. 3 CHG Charge FET control. This pin connects to the charge FET for controlling charge path. 4 DSG Discharge FET control. This pin connects to the discharge FET for controlling discharge path. 5 TS1 Temperature sensor input 1. 6 TS2 Temperature sensor input 2. 7 TS3 Temperature sensor input 3. 8 ALERT Active-low interrupt output. Indicates fault conditions or warning. 9 COMM Communication interface , used for data transfer (e.g., I2C, SPI). 10 NC No connection pin. 11 NC No connection pin. 12 GND Ground pin, connects to the system ground. 13 NC No connection pin. 14 SCL I2C clock input/output pin. 15 SDA I2C data input/output pin. 16 VREF Reference voltage input for ADC. 17 P-GND Power ground, typically connects to the battery pack's negative terminal. 18 DIO Data input/output for configuration or diagnostics. 19 DOUT Data output pin for communication. 20 VIN Voltage input pin, measures voltage of the battery pack. 21 VRP Voltage reference input for voltage monitoring. 22 VSS System ground. 23 A2 Analog input 2 (measuring additional voltages or currents). 24 A1 Analog input 1 (measuring additional voltages or currents). 25 A3 Analog input 3 (measuring additional voltages or currents). 26 TST1 Test point 1 for internal testing and diagnostics. 27 TST2 Test point 2 for internal testing and diagnostics. 28 CHG Charge enable control. 29 NC No connection pin. 30 NC No connection pin. 31 NC No connection pin. 32 PFC Positive feedback control for internal regulation. 33 GND Ground pin. 34 VCC Power supply input pin for the internal circuitry. 35 VPOS Battery positive voltage input pin. 36 VNEG Battery negative voltage input pin. 37 IN1 Input pin for additional monitoring or sensing functions. 38 IN2 Input pin for additional monitoring or sensing functions. 39 IN3 Input pin for additional monitoring or sensing functions. 40 SPARE1 Spare pin for custom configuration or diagnostics. 41 SPARE2 Spare pin for custom configuration or diagnostics. 42 SPARE3 Spare pin for custom configuration or diagnostics. 43 SPARE4 Spare pin for custom configuration or diagnostics. 44 SPARE5 Spare pin for custom configuration or diagnostics. 45 SPARE6 Spare pin for custom configuration or diagnostics. 46 SPARE7 Spare pin for custom configuration or diagnostics. 47 PFC2 Positive feedback control 2. 48 PFC3 Positive feedback control 3. 49 PFC4 Positive feedback control 4. 50 PFC5 Positive feedback control 5. 51 PFC6 Positive feedback control 6. 52 PFC7 Positive feedback control 7. 53 NC No connection pin. 54 NC No connection pin. 55 NC No connection pin. 56 NC No connection pin. 57 NC No connection pin. 58 NC No connection pin. 59 NC No connection pin. 60 NC No connection pin. 61 NC No connection pin. 62 NC No connection pin. 63 NC No connection pin. 64 NC No connection pin.FAQ for BQ76952PFBR:
Q1: What is the purpose of the BQ76952PFBR? A1: The BQ76952PFBR is a battery management IC used for monitoring and protecting multi-cell lithium-ion or lithium-polymer battery packs.
Q2: How many pins are there in the BQ76952PFBR package? A2: The BQ76952PFBR comes in a 64-pin QFN package.
Q3: What is the primary function of the ALERT pin? A3: The ALERT pin is an active-low output that signals an interrupt when a fault or warning condition occurs.
Q4: Can the BQ76952PFBR communicate via I2C? A4: Yes, the BQ76952PFBR supports I2C communication through the SCL and SDA pins.
Q5: What is the function of the CHG pin? A5: The CHG pin is used for controlling the charge FET, enabling or disabling the charge path in the battery pack.
Q6: What is the function of the DSG pin? A6: The DSG pin is used to control the discharge FET, enabling or disabling the discharge path in the battery pack.
Q7: What are the TS pins for? A7: The TS pins (TS1, TS2, TS3) are used for connecting temperature sensors to monitor the temperature of the battery cells.
Q8: What type of battery does the BQ76952PFBR support? A8: The BQ76952PFBR is designed for multi-cell lithium-ion or lithium-polymer battery packs.
Q9: How does the BQ76952PFBR protect the battery pack? A9: It offers protection against overvoltage, undervoltage, overcurrent, and temperature faults.
Q10: What is the VSTOR pin used for? A10: The VSTOR pin provides the power supply for the device and connects to the positive terminal of the battery pack.
Q11: What is the role of the VIN pin? A11: The VIN pin is used for measuring the battery pack's voltage to monitor the state of charge.
Q12: Can the BQ76952PFBR support voltage balancing? A12: Yes, the BQ76952PFBR supports voltage balancing for the individual cells in the battery pack.
Q13: Is there a fault detection mechanism in the BQ76952PFBR? A13: Yes, the ALERT pin indicates fault conditions, and the device includes overvoltage, undervoltage, and overcurrent protections.
Q14: What are the input pins A1, A2, and A3 for? A14: These pins are used for analog input, typically for additional voltage or current monitoring.
Q15: What is the function of the P-GND pin? A15: The P-GND pin connects to the battery pack's negative terminal and acts as the power ground.
Q16: Can the BQ76952PFBR handle multiple cells? A16: Yes, it is specifically designed to manage multi-cell battery packs.
Q17: How can I configure the BQ76952PFBR? A17: Configuration can be done via I2C or other communication protocols, depending on the application.
Q18: What is the function of the DOUT pin? A18: The DOUT pin is used to output data from the device for diagnostics or monitoring.
Q19: What type of temperature sensors are supported by the BQ76952PFBR? A19: The device supports NTC thermistors for temperature monitoring via the TS1, TS2, and TS3 pins.
Q20: How can I manage the charge and discharge paths? A20: Charge and discharge paths are controlled through the CHG and DSG pins, which are connected to the respective FETs.
This information provides a complete overview of the BQ76952PFBR's functionality, pinout, and FAQs for practical application.