The "BQ40Z50RSMR-R2" is a part of the Texas Instruments product line. It is a Battery Management System (BMS) IC specifically designed for use in lithium-ion (Li-ion) and lithium-polymer (LiPo) battery packs. Below, I will provide the detailed pin functions, packaging information, and frequently asked questions for this part.
Packaging Information
The BQ40Z50RSMR-R2 comes in a 48-pin QFN (Quad Flat No-lead) package. This package is widely used for devices with high functionality and multiple pins, while maintaining a low profile and compact size.
Pin Function List (48 Pins)
Here is the detailed pinout and function description for the BQ40Z50RSMR-R2 in the QFN-48 package:
Pin # Pin Name Pin Function Description 1 VSTOR Battery storage voltage input. Connect to the positive terminal of the battery pack. 2 TS1 Temperature sensor 1 input for monitoring battery temperature. 3 TS2 Temperature sensor 2 input for monitoring battery temperature. 4 I2C_SCL I2C Clock line for communication with external devices (master). 5 I2C_SDA I2C data line for communication with external devices (master). 6 GPIO1 General-purpose input/output, configurable for various functions. 7 GPIO2 General-purpose input/output, configurable for various functions. 8 GPIO3 General-purpose input/output, configurable for various functions. 9 GPIO4 General-purpose input/output, configurable for various functions. 10 VSS Ground pin. Connect to the system ground. 11 SDA I2C serial data line for communication. 12 SCL I2C serial clock line for communication. 13 VDD Power supply input for the IC. Connect to system voltage (e.g., 3.3V or 5V). 14 VSTBY Standby voltage pin. It is used for low-power standby mode operation. 15 C1+ Capacitor input (positive side), used for internal filtering. 16 C1- Capacitor input (negative side), used for internal filtering. 17 BATSNS Battery pack voltage sense input for monitoring voltage across the battery pack. 18 SMB_ALERT Alert signal for SMBus or I2C communication, indicating an event such as fault conditions. 19 TXD UART transmit data line, used for serial communication. 20 RXD UART receive data line, used for serial communication. 21 FET1 MOSFET gate drive signal for battery protection (discharge path). 22 FET2 MOSFET gate drive signal for battery protection (charge path). 23 FET3 MOSFET gate drive signal for additional battery protection or control. 24 VSS Ground reference. Connect to the system ground. 25 VDDIO I/O power supply pin. 26 LDO1 Low Drop-out regulator output for powering other components. 27 LDO2 Low Drop-out regulator output for powering other components. 28 BSRST Battery reset input, used to reset battery states or for system initialization. 29 FET_SNS Sense input for MOSFET (protection) current monitoring. 30 SDA_B Alternate I2C data line for communication with an additional device (optional). 31 SCL_B Alternate I2C clock line for communication with an additional device (optional). 32 GND Ground pin. Connect to the system ground. 33 CS Chip select input for serial communication interface . 34 VINT Internal voltage input pin. 35 VIND Inductor voltage input for internal power supply. 36 FLT Fault signal output, indicating fault status for battery or system. 37 VPP Voltage power input for external devices. 38 VSW Switch input for controlling the power path from the battery. 39 PGND Power ground pin. Connect to system ground. 40 RST System reset pin for initiating a device reset. 41 NC No connection (can be left unconnected). 42 NC No connection (can be left unconnected). 43 NC No connection (can be left unconnected). 44 NC No connection (can be left unconnected). 45 NC No connection (can be left unconnected). 46 NC No connection (can be left unconnected). 47 NC No connection (can be left unconnected). 48 NC No connection (can be left unconnected).Frequently Asked Questions (FAQ)
Q1: What is the purpose of the VSTOR pin on the BQ40Z50RSMR-R2? A1: The VSTOR pin is the battery storage voltage input. It is connected to the positive terminal of the battery pack and is used to monitor the pack voltage for battery management.
Q2: What is the function of the TS1 and TS2 pins? A2: TS1 and TS2 are temperature sensor inputs used to monitor the temperature of the battery pack. They help prevent the pack from operating outside of safe temperature ranges.
Q3: Can the I2CSDA and I2CSCL pins be used for both data transmission and receiving? A3: Yes, I2CSDA (Serial Data) and I2CSCL (Serial Clock) are used for communication, where SDA transmits data and SCL synchronizes the data transmission.
Q4: What does the SMBALERT pin indicate? A4: The SMBALERT pin is an alert signal used for SMBus or I2C communication, notifying the system of critical events such as faults or errors.
Q5: How is the FET1, FET2, and FET3 pins used? A5: These pins are used to control MOSFETs for battery protection, including discharge and charge control, helping to safeguard the battery pack from damage due to overvoltage, undervoltage, and overcurrent conditions.
Q6: How should the VDD pin be powered? A6: The VDD pin should be connected to a stable voltage source (typically 3.3V or 5V) to power the BQ40Z50RSMR-R2 IC.
Q7: What is the function of the GND pin? A7: The GND pin is the ground reference for the IC and should be connected to the system ground.
Q8: What role does the VDDIO pin serve? A8: The VDDIO pin powers the I/O sections of the IC, enabling communication and interfacing with other devices in the system.
Q9: Can I use the LDO1 and LDO2 pins to power external components? A9: Yes, LDO1 and LDO2 provide low drop-out voltage regulation and can be used to power low-voltage devices within the system.
Q10: What should I do if the FLT pin is triggered? A10: The FLT pin signals a fault condition in the system. Upon activation, check the status of the battery and system for potential issues such as overvoltage, undervoltage, or thermal failures.
This response covers the pinout and the first part of the FAQ for the BQ40Z50RSMR-R2. If you need more detailed information for specific queries or a deeper dive into the remaining FAQs, feel free to ask!
