BQ25601RTWR Detai LED explanation of pin function specifications and circuit principle instructions（24 ）

The BQ25601RTWR is a product from Texas Instruments. It is a highly integrated battery charger IC designed for lithium-ion and lithium-polymer battery management in various applications.

Here’s a detai LED explanation based on your request, covering:

Pin Function Specifications (with full description of each pin) Package Type and Pin Count FAQ for the specified part

1. Package and Pin Count:

The BQ25601RTWR comes in a QFN-20 package, which has 20 pins.

2. Pin Function Specifications:

Pin No. Pin Name Pin Description 1 SYS System Output Pin. Provides system Power from the battery when charging is enabled. 2 GND Ground Pin. Connects to the system ground. 3 STAT1 Status Indicator 1. LED driver for charging status. 4 STAT2 Status Indicator 2. Another LED driver for system status or other indicators. 5 ISET Current Setting Pin. Used for setting the charging current through an external resistor. 6 PSEL Input Pin for power source selection. Controls the type of input power. 7 TS Thermal Sense Pin. Used to monitor the temperature of the battery or system for over-temperature protection. 8 BAT Battery Connection Pin. Connects to the positive terminal of the battery. 9 CHRG Charge Pin. Provides feedback to indicate whether the battery is charging. 10 CE Chip Enable Pin. Used to turn the chip on or off (enable/disable the IC operation). 11 PGOOD Power Good Pin. Indicates if the system is properly powered and the voltage is within acceptable limits. 12 VSTOR Storage voltage pin. This pin monitors voltage of external storage or input source. 13 PGND Power Ground Pin. Connects to the ground plane of the system. 14 I2C_SCL I2C Clock Line. Used for serial communication with I2C enabled devices. 15 I2C_SDA I2C Data Line. Used for serial communication with I2C enabled devices. 16 VSTBY Standby Voltage Pin. Used to monitor and control standby voltage supply for lower-power operation. 17 BATLOW Battery Low Voltage Pin. Used for monitoring when battery voltage goes below a specified threshold. 18 EN Enable Pin. Used to enable or disable the device's functionality based on the system requirements. 19 VDD Input Voltage Pin. Connects to the positive input voltage supply. 20 CAP Capacitor Pin. Used to smooth voltage fluctuations and help filter the system voltage.

3. FAQ (Frequently Asked Questions):

Q1: What is the function of the SYS pin in the BQ25601RTWR?

A1: The SYS pin provides system power from the battery when charging is enabled. It is connected to the load (system) to supply power.

Q2: What is the purpose of the STAT1 and STAT2 pins?

A2: The STAT1 and STAT2 pins are LED drivers for charge status indicators, allowing you to monitor the charging process with visual feedback.

Q3: Can I use the ISET pin to control charging current?

A3: Yes, the ISET pin is used for setting the charging current through an external resistor. The current is adjusted according to the resistor value connected.

Q4: What is the function of the TS pin?

A4: The TS pin monitors the temperature of the battery or system to prevent charging in unsafe temperature conditions.

Q5: What happens if I leave the CE pin unconnected?

A5: If the CE (Chip Enable) pin is unconnected, the IC will be disabled, and the charging function will not operate.

Q6: How does the PGOOD pin help in system diagnostics?

A6: The PGOOD pin provides an indication if the system is powered properly and the voltage is within the required limits, which can help detect power issues.

Q7: What is the significance of the I2CSCL and I2CSDA pins?

A7: The I2CSCL (clock) and I2CSDA (data) pins are used for serial communication, allowing the IC to interface with I2C-based systems or other devices for control and configuration.

Q8: Is the BAT pin only for battery connection?

A8: Yes, the BAT pin connects to the positive terminal of the battery and is essential for charging the battery properly.

Q9: What should I connect to the VDD pin?

A9: The VDD pin should be connected to the positive input voltage supply to power the IC.

Q10: How do I use the VSTOR pin?

A10: The VSTOR pin monitors the voltage of an external storage or input power source. It is used for controlling voltage and ensuring it is within an acceptable range for operation.

Q11: What is the function of the BATLOW pin?

A11: The BATLOW pin detects when the battery voltage drops below a specified threshold, triggering appropriate actions to protect the battery from damage.

Q12: What should be connected to the PGND pin?

A12: The PGND pin connects to the system’s ground plane to ensure proper grounding for the power sections of the IC.

Q13: How does the CHRG pin work?

A13: The CHRG pin provides feedback on the charging status. It indicates whether the battery is in the charging process.

Q14: How can I enable or disable the IC?

A14: The EN pin is used to enable or disable the IC. By toggling this pin, you can turn the IC's operation on or off.

Q15: Can the VSTBY pin be used for low-power operation?

A15: Yes, the VSTBY pin helps manage low-power operation by monitoring the standby voltage for power-saving modes.

Q16: What happens if the ISET pin is improperly configured?

A16: If the ISET pin is not properly configured, the charging current might not be set correctly, potentially leading to charging issues.

Q17: Can I use the STAT1 pin for something other than a status indicator?

A17: The STAT1 pin is mainly used for status indication, but it can also serve other diagnostic or system indication purposes depending on the design.

Q18: What type of battery can I connect to the BAT pin?

A18: The BAT pin is designed to work with lithium-ion or lithium-polymer rechargeable batteries, typically found in mobile devices.

Q19: How can I ensure safe operation of the BQ25601RTWR IC?

A19: Ensure proper thermal management, use correct input voltage, and monitor the battery voltage using the TS and BATLOW pins to ensure safe operation.

Q20: What is the maximum voltage I can apply to the VDD pin?

A20: The VDD pin supports a wide input voltage range, typically from 3.0V to 5.5V. Ensure the voltage is within the specified range to avoid damage.

Summary:

This detailed guide provides full pin descriptions and FAQ for the BQ25601RTWR, ensuring clarity on each pin function and common questions regarding this component. The pin count for this device is 20 in the QFN-20 package.