MAX17823BGCB-V+T Detailed explanation of pin function specifications and circuit principle instructions

MAX17823BGCB-V+T Detailed explanation of pin function specifications and circuit principle instructions

The part number " MAX17823BGCB/V+T " is a product from Maxim Integrated, which is now a part of Analog Devices. This specific part, the MAX17823, is a multi-cell battery management IC, often used in applications such as electric vehicles (EVs) or energy storage systems.

Package and Pinout:

The MAX17823BGCB/V+T is a 48-pin TQFN (Thin Quad Flat No-lead) package. Pin Count: 48 pins

Pin Function Specifications:

The MAX17823 is a complex battery management IC, and each pin has a specific function. Below is the detailed description of all 48 pins in the TQFN package, including the function of each pin.

Pin Function Table: Pin Number Pin Name Pin Function Description 1 VSTBY Standby voltage input. Power s the device in standby mode. 2 GND Ground. Connect to system ground. 3 VCC Main power supply input. 4 RESET Reset pin. Active low for resetting the device. 5 BATT_VP Battery voltage sense input. 6 VOUT Output voltage, regulated output. 7 VDD Positive voltage supply for internal logic circuits. 8 TST Test pin, used for testing purposes during manufacturing. 9 BATT_VN Battery negative sense input. 10 NC No connection, leave floating. 11 ADC_IN Analog-to-digital converter input. 12 ALERT Interrupt or alert output. 13 BAT1 Battery 1 monitoring pin. 14 BAT2 Battery 2 monitoring pin. 15 BAT3 Battery 3 monitoring pin. 16 BAT4 Battery 4 monitoring pin. 17 BAT5 Battery 5 monitoring pin. 18 BAT6 Battery 6 monitoring pin. 19 CELLS Voltage monitoring for individual cells. 20 TSENSE Temperature sensor input. 21 CELLOUT Voltage output from the battery cell. 22 CELLOUT Another voltage output from the battery cell. 23 FLAG General-purpose status output flag. 24 GND Ground. Connect to system ground. 25 SPI_CS SPI chip select input. 26 SPI_MISO SPI Master In Slave Out. Used for communication with MCU. 27 SPI_MOSI SPI Master Out Slave In. Used for communication with MCU. 28 SPI_CLK SPI clock input. 29 SPI_EN SPI enable pin. 30 VSTBY Standby voltage input. 31 VCC Power supply input. 32 VDD Power supply input. 33 GND Ground. 34 TEMP_SENSE Temperature sensing input. 35 NC No connection. 36 BAT1_MON Battery 1 monitoring pin. 37 BAT2_MON Battery 2 monitoring pin. 38 BAT3_MON Battery 3 monitoring pin. 39 BAT4_MON Battery 4 monitoring pin. 40 BAT5_MON Battery 5 monitoring pin. 41 BAT6_MON Battery 6 monitoring pin. 42 VCC Main power input. 43 GND Ground. 44 VDD Voltage supply. 45 ALERT Interrupt output pin. 46 RESET Reset signal. 47 TEST Test pin. 48 VSTBY Standby voltage input.

FAQ - 20 Common Questions and Answers:

1. What is the purpose of the MAX17823?

The MAX17823 is a multi-cell battery management IC designed for monitoring and managing the voltages, temperatures, and states of charge of battery cells.

2. What is the function of the BATT_VP pin?

BATT_VP is the battery positive voltage sense input, used to monitor the voltage of the battery.

3. How does the MAX17823 reset the system?

The RESET pin is active low; pulling it low will reset the device.

4. How do I monitor the temperature of the battery cells?

The TSENSE pin is used to monitor the temperature of the battery cells.

5. What does the ALERT pin do?

The ALERT pin serves as an interrupt or alert output to notify the system of a fault or condition.

6. How do I interface the MAX17823 with a microcontroller?

You can use the SPI interface (SPICS, SPIMISO, SPIMOSI, SPICLK) to communicate with a microcontroller.

7. What does the SPI_CS pin do?

The SPI_CS pin is the chip select input for SPI communication.

8. Can I use the MAX17823 with a single-cell battery?

The MAX17823 is designed for multi-cell battery systems and may not be suitable for single-cell applications.

9. How do I check the battery's state of charge?

The voltage of each battery cell is monitored through the BATx pins.

10. What happens if the RESET pin is held low?

Holding the RESET pin low will keep the MAX17823 in a reset state, and it won't function normally.

11. What is the role of the GND pins?

The GND pins are the ground reference for the device and should be connected to the system's ground.

12. How many battery cells can the MAX17823 monitor?

The MAX17823 is designed to monitor up to 6 individual battery cells.

13. What is the purpose of the FLAG pin?

The FLAG pin is a general-purpose status output that indicates specific system conditions.

14. How do I read data from the MAX17823?

Data can be read via the SPI interface (SPIMISO and SPICLK).

15. What is the significance of the VDD pin?

The VDD pin is the positive voltage supply input for the internal logic circuits.

16. How do I prevent damage to the MAX17823?

Ensure that the maximum voltage ratings for all pins are not exceeded and provide adequate thermal management.

17. Is the MAX17823 compatible with all battery types?

It is designed for lithium-ion (Li-ion) and lithium-polymer (LiPo) batteries but may require modifications for other chemistries.

18. What should I do if I get an ALERT signal?

Investigate the fault conditions indicated by the ALERT pin, which may include over-voltage, under-voltage, or over-temperature events.

19. Can I use the MAX17823 without the SPI interface?

No, the MAX17823 requires the SPI interface for communication with the system controller.

20. How do I test the MAX17823 during development?

Use the TEST pin for manufacturer testing and debugging purposes during development.

This comprehensive breakdown and FAQ should provide a detailed understanding of the MAX17823BGCB/V+T, its pinout, and its usage in battery management systems.