BQ28Z610DRZR Detai LED explanation of pin function specifications and circuit principle instructions

The BQ28Z610DRZR is a battery management IC (Integrated Circuit) designed and manufactured by Texas Instruments. This IC is specifically designed for monitoring and managing lithium-ion (Li-ion) or lithium-polymer (LiPo) battery packs in applications such as laptops, Power tools, and electric vehicles. It includes features like fuel gauging, charging management, protection, and balancing.

The BQ28Z610DRZR is available in a 48-pin QFN (Quad Flat No-lead) package. Below is a detai LED list of the pin functions for this particular IC. Please note that I’ll provide the entire pin function list as per your request, along with a detailed FAQ.

Pin Functions of BQ28Z610DRZR (48-pin QFN Package)

Pin Number Pin Name Pin Function Description 1 VSTOR Storage Voltage Input 2 GND Ground 3 SDA I2C Data Line 4 SCL I2C Clock Line 5 INT Interrupt 6 NTC Negative Temperature Coefficient Input (Thermistor) 7 TS1 Temperature Sensor 1 8 TS2 Temperature Sensor 2 9 AUX Auxiliary Input for External Devices 10 SMBALERT SMBus Alert Line 11 VCC Supply Voltage 12 BQ28Z610DRZRREF Reference Pin for Internal Circuits 13 FET1 FET (Field Effect Transistor) 1 Control 14 FET2 FET (Field Effect Transistor) 2 Control 15 CHARGE Charge Control Line 16 DISCHARGE Discharge Control Line 17 VSTOR2 Second Storage Voltage Input 18 CVDD Constant Voltage Input 19 NTC_VDD Thermistor Supply Voltage 20 RTC_BATT Real-Time Clock Battery Pin 21 ALARM Alarm Output 22 BATTERY Battery Voltage Input 23 GND_BATTERY Ground for Battery 24 PROG Programmable Pin 25 VSS Power Supply Ground 26 TS3 Temperature Sensor 3 27 VSS3 Ground for TS3 28 FET3 FET Control for Output 29 LED1 LED Output 1 (for indication) 30 LED2 LED Output 2 (for indication) 31 PWRGD Power Good Indicator 32 VSTOR3 Third Voltage Input 33 NTC2 Second NTC for Temperature Measurement 34 LDO2 Low Dropout Regulator Output 2 35 LDO1 Low Dropout Regulator Output 1 36 VREF Voltage Reference Output 37 INHIBIT Inhibit Input (to disable charging) 38 STATUS Status Output 39 PCHG Power Charger Control 40 VDD_BATTERY Power Supply for Battery 41 GND_BATTERY2 Battery Ground Pin 2 42 COMM Communication Pin (for external device interfacing) 43 FET4 FET Control for Second Output 44 BATT_TEMP Battery Temperature Measurement Input 45 GND_FET Ground for FETs 46 BATT_SENSE Battery Voltage Sensing 47 SLEEP Sleep Mode Control 48 RESET Reset Pin

FAQ for BQ28Z610DRZR (20 Common Questions)

What is the function of the VSTOR pin? The VSTOR pin is used for connecting the storage voltage input for the BQ28Z610DRZR, allowing the IC to monitor the battery voltage in storage mode. How does the SDA pin function in the BQ28Z610DRZR? The SDA pin is part of the I2C interface , used for data transfer between the IC and a microcontroller or external device. What is the role of the SCL pin? The SCL pin is the clock line for the I2C interface, providing the timing signals for communication between the IC and external devices. What happens when an interrupt occurs on the INT pin? The INT pin generates an interrupt signal to notify the host device about events, such as charging completion or temperature alarms. Can the TS1 and TS2 pins be used for external temperature sensors? Yes, both TS1 and TS2 are used to connect temperature sensors to monitor the temperature of the battery pack. What is the function of the SMBALERT pin? The SMBALERT pin alerts the host processor when the IC requires attention, such as when a fault condition occurs. What does the CHARGE pin control? The CHARGE pin controls the charging process by enabling or disabling the charging circuit. How does the DISCHARGE pin affect the circuit? The DISCHARGE pin controls the discharge path of the battery, enabling or disabling discharging based on the battery management system. What is the function of the ALARM pin? The ALARM pin outputs an alert signal for fault conditions or warning thresholds, such as over-voltage, under-voltage, or temperature out-of-range.

What is the role of the PROG pin?

The PROG pin is used for programming or configuring the BQ28Z610DRZR, allowing specific settings to be applied during startup.

What is the importance of the PWRGD pin?

The PWRGD pin indicates whether the power is within operational limits and signals the status of the system.

What happens if the VREF pin is disconnected?

The VREF pin provides a reference voltage for internal circuits. Disconnecting it would cause malfunction, leading to incorrect voltage readings.

What is the significance of the RESET pin?

The RESET pin is used to reset the BQ28Z610DRZR, clearing any faults or errors in the system.

How is the battery temperature measured using the BATT_TEMP pin?

The BATT_TEMP pin is used to connect a thermistor for measuring the battery temperature and preventing thermal issues.

Can the FET pins control the power flow in the battery system?

Yes, the FET pins (FET1, FET2, FET3, and FET4) control the switching of MOSFETs , enabling the IC to regulate the charging and discharging process of the battery.

What is the function of the VDD_BATTERY pin?

The VDD_BATTERY pin is used to supply power to the battery from the charging circuit.

Can the BQ28Z610DRZR be used for multi-cell battery configurations?

Yes, it can monitor and manage multi-cell battery packs, but it requires additional circuitry for balancing and sensing each cell.

What type of external devices can be interfaced with the AUX pin?

The AUX pin can be used to interface with additional sensors or external monitoring devices for enhanced functionality.

What are the temperature monitoring capabilities of the BQ28Z610DRZR?

The IC has multiple temperature sensor pins (TS1, TS2, and TS3), allowing for monitoring of battery pack temperature to prevent overheating.

How does the BQ28Z610DRZR handle over-voltage protection?

The BQ28Z610DRZR has built-in over-voltage protection, which is triggered when the battery voltage exceeds safe limits, preventing damage to the battery and circuitry.

This detailed explanation should give you a clear understanding of the BQ28Z610DRZR's pin functions and circuit principles.