BQ28Z610DRZR Detailed explanation of pin function specifications and circuit principle instructions

The BQ28Z610DRZR is a battery management IC manufactured by Texas Instruments (TI). It is part of the BQ28Z60 series and is used for fuel gauging and protection of rechargeable batteries, commonly in applications like portable electronics, medical devices, and Power tools.

Packaging Type:

The BQ28Z610DRZR comes in a QFN-32 package, with 32 pins in total.

Pinout Description:

Here is the detailed pinout for the BQ28Z610DRZR in a QFN-32 package. The function of each pin is listed below:

Pin Number Pin Name Pin Type Pin Function Description 1 VSTOR Power Battery Voltage input pin. Connect to the positive terminal of the battery pack. 2 GND Power Ground. Connect to the ground of the system. 3 I2C_SCL Digital Serial Clock Line for I2C Communication . 4 I2C_SDA Digital Serial Data Line for I2C communication. 5 ALERT Digital Alerts the system to conditions that need attention. 6 PROCHG Digital Charge status indication. High when charging, low when not charging. 7 TS1 Analog Thermistor input 1, used for temperature measurement. 8 TS2 Analog Thermistor input 2, used for temperature measurement. 9 CHRG Digital Charge Enable input, used to control charging. 10 SDA Digital Serial Data input/output for I2C communication. 11 SCL Digital Serial Clock input/output for I2C communication. 12 RESET Digital Reset pin, used to reset the device. 13 PGOOD Digital Power good indicator. High when power is stable, low when not. 14 VBAT Power Battery voltage input. Connect to the battery positive terminal. 15 BATT_DN Analog Battery down input, used for battery voltage monitoring. 16 BATT_UP Analog Battery up input, used for battery voltage monitoring. 17 CSTAT Digital Charge status output pin. High when charging, low when not charging. 18 VDD Power Power supply input pin. Connect to 3.3V or 5V supply. 19 VDDIO Power Digital I/O supply. Connect to system logic supply voltage. 20 TS3 Analog Thermistor input 3 for additional temperature measurement. 21 RSTOUT Digital Reset output, signals when reset occurs. 22 VSTOR_OUT Power Output for the stored voltage from the battery. 23 GPIO1 Digital General-purpose I/O pin 1. 24 GPIO2 Digital General-purpose I/O pin 2. 25 GPIO3 Digital General-purpose I/O pin 3. 26 GPIO4 Digital General-purpose I/O pin 4. 27 VDDIO2 Power I/O power supply for the device logic. 28 NTC Analog Negative temperature coefficient (NTC) thermistor input. 29 LDOR Power Low dropout regulator output pin, used to supply internal voltage. 30 LDOI Power Low dropout regulator input pin. 31 NTC2 Analog Second NTC thermistor input. 32 VSTOR_GND Power Ground for the battery storage.

20 FAQ for the BQ28Z610DRZR:

Q: What is the function of the ALERT pin in the BQ28Z610DRZR? A: The ALERT pin is used to notify the system of any abnormal conditions, such as low battery, overvoltage, or other error conditions. Q: How do I communicate with the BQ28Z610DRZR? A: Communication with the BQ28Z610DRZR is done through the I2C interface using the SDA (data) and SCL (clock) pins. Q: Can the BQ28Z610DRZR be used to monitor battery temperature? A: Yes, the BQ28Z610DRZR has thermistor inputs (TS1, TS2, TS3) that can be used to monitor the battery's temperature. Q: What is the maximum input voltage for the VDD pin? A: The VDD pin can support a maximum voltage of 5.5V. Q: What does the PROCHG pin indicate? A: The PROCHG pin indicates whether the battery is being charged. It is high when charging and low when not. Q: How do I reset the BQ28Z610DRZR? A: The BQ28Z610DRZR can be reset using the RESET pin. Q: What is the role of the GPIO pins in the BQ28Z610DRZR? A: The GPIO pins (GPIO1, GPIO2, GPIO3, GPIO4) are used for general-purpose input/output operations, which can be configured for different functions depending on the application. Q: Can the BQ28Z610DRZR detect overvoltage conditions? A: Yes, the BQ28Z610DRZR has the capability to detect overvoltage conditions and will report this via the ALERT pin. Q: How do I use the BQ28Z610DRZR for fuel gauging? A: The BQ28Z610DRZR can be used for fuel gauging by monitoring battery voltage and temperature via its analog and digital inputs.

Q: What is the operating temperature range for the BQ28Z610DRZR?

A: The BQ28Z610DRZR operates within the temperature range of -40°C to 85°C.

Q: Can the BQ28Z610DRZR be used in a system with multiple batteries?

A: Yes, the BQ28Z610DRZR is capable of handling multi-cell battery configurations.

Q: What does the CHRG pin indicate?

A: The CHRG pin is used to indicate the charging status. It is high when charging, and low when charging is not in progress.

Q: How does the BQ28Z610DRZR handle low battery conditions?

A: The BQ28Z610DRZR will trigger the ALERT pin and may also shut down the system when the battery voltage falls below a predefined threshold.

Q: How do I connect the BQ28Z610DRZR to my battery?

A: Connect the positive terminal of the battery to the VSTOR pin and the negative terminal to the GND pin.

Q: What is the purpose of the NTC input pins?

A: The NTC pins are used for temperature monitoring by connecting them to NTC thermistors.

Q: Is the BQ28Z610DRZR suitable for automotive applications?

A: Yes, the BQ28Z610DRZR is suitable for a wide range of applications, including automotive systems, provided it operates within the recommended voltage and temperature ranges.

Q: How does the BQ28Z610DRZR manage battery charge cycles?

A: The BQ28Z610DRZR supports charging algorithms and charge cycle counting to help manage battery health.

Q: What is the purpose of the VSTOR_OUT pin?

A: The VSTOR_OUT pin provides the stored battery voltage to other parts of the system.

Q: Can the BQ28Z610DRZR be used in medical devices?

A: Yes, the BQ28Z610DRZR is suitable for medical devices, providing accurate fuel gauging and battery protection.

Q: Can the BQ28Z610DRZR operate without a microcontroller?

A: While the BQ28Z610DRZR can function independently in some cases, it is typically controlled by a microcontroller for more complex tasks like communication and management.

Conclusion:

The BQ28Z610DRZR is a highly versatile and efficient battery management system that is ideal for various battery-powered applications. With its multiple input pins for voltage, current, and temperature monitoring, along with its ability to handle charging, discharging, and fuel gauging, it offers a comprehensive solution for battery management.