LM5069MM-2 -NOPB Detailed explanation of pin function specifications and circuit principle instructions

The part number " LM5069MM-2/NOPB " is from Texas Instruments, a well-known manufacturer of semiconductor devices. The LM5069MM-2/NOPB is a high-side Power switch with integrated fault protection for power rails.

Package and Pinout Details:

The "LM5069MM-2/NOPB" device comes in a QFN-20 (Quad Flat No-lead) package, which contains 20 pins. Below is the pinout and detailed function of each pin.

Pin Function Table:

Pin Number Pin Name Pin Function Description 1 VDD Power supply pin. Connect to a positive voltage source (usually 5V to 12V) for proper operation. 2 VSS Ground pin. Connect to the system ground for the device to function properly. 3 IN+ Input voltage pin. This pin is the positive input for the power switch, connecting to the load or supply line. 4 IN- Negative input voltage pin. Connect to the input voltage return for differential input to the switch. 5 OUT+ Output positive voltage. This pin connects to the output of the power switch, typically the voltage delivered to the load. 6 OUT- Output negative voltage. This pin connects to the return path of the load. 7 CS Current sense input. Used for monitoring the current flowing through the switch. 8 EN Enable pin. Used to turn on or off the power switch based on logic level input. 9 Fault Fault indication pin. Goes low to indicate a fault condition, such as an overcurrent or overvoltage event. 10 PGND Power ground pin. Connect to the system's power ground. 11 FET Gate Control Controls the gate of the internal FET. This pin regulates the internal FET's switching behavior. 12 OV Over-voltage detection input. This pin is used to monitor for over-voltage conditions at the output. 13 UV Under-voltage detection input. This pin monitors for under-voltage conditions. 14 SHDN Shutdown pin. When pulled low, it disables the switch to save power or protect from faults. 15 FAULT_RST Fault reset input. A logic high here resets any latched fault condition. 16 PG Power good output. Indicates if the output is within the specified voltage range for proper operation. 17 VDD Input Another input pin for positive supply. Redundant to ensure stability. 18 GND Another ground pin, ensuring good connection to the system ground. 19 NC No connection. This pin is not connected to any internal circuitry and is used for package routing. 20 NC No connection. This pin is not connected to any internal circuitry and is used for package routing.

FAQ – 20 Common Questions:

What is the maximum voltage supported by the LM5069MM-2/NOPB device? The LM5069MM-2/NOPB can support input voltages from 4.5V to 75V. How can I reset the fault condition in the LM5069MM-2/NOPB? You can reset a fault condition by asserting a logic high on the FAULT_RST pin. Can I use the LM5069MM-2/NOPB in low voltage applications? The LM5069MM-2/NOPB is not recommended for low voltage applications below 4.5V. **What should I connect the *FAULT* pin to in a typical application?** The FAULT pin should be monitored to detect fault conditions. It will output low during a fault. Is the LM5069MM-2/NOPB suitable for automotive applications? Yes, the LM5069MM-2/NOPB is designed to be used in automotive and industrial environments with a wide input voltage range. **How should the *ENABLE* pin be used?** The ENABLE pin should be driven high to enable the switch and low to disable it. **What is the role of the *CS* pin in the LM5069MM-2/NOPB?** The CS pin is used to monitor the current flowing through the switch, providing real-time current measurement. **How does the *OV* pin work in the LM5069MM-2/NOPB?** The OV pin detects if the output voltage exceeds a preset over-voltage threshold, indicating a fault condition. **Can the *IN-* pin be left floating in the LM5069MM-2/NOPB?** No, the IN- pin should always be connected to the input return for proper operation. What is the maximum current rating for the LM5069MM-2/NOPB? The maximum current supported is up to 10A, depending on the application and cooling method. Is there a thermal shutdown feature in the LM5069MM-2/NOPB? Yes, the device includes thermal shutdown protection to prevent overheating. What is the typical application of the LM5069MM-2/NOPB? It is commonly used in power rail protection, especially for automotive and industrial power systems. Does the LM5069MM-2/NOPB require external components? Yes, external components like capacitor s and resistors are required for optimal performance and fault protection. How can I ensure reliable operation of the LM5069MM-2/NOPB? Ensure the input and output voltage ranges are within specification, and use the appropriate external components for fault protection. **How does the *PG* pin work in the LM5069MM-2/NOPB?** The PG pin outputs a logic high when the output voltage is within the required operating range. Can the LM5069MM-2/NOPB be used for DC-DC converters? Yes, it can be used in DC-DC conversion applications where high-side power switching is needed. What happens when the LM5069MM-2/NOPB experiences an overcurrent fault? The device will shut down and indicate a fault condition on the FAULT pin. Is the LM5069MM-2/NOPB protected against short circuits? Yes, it includes internal protection mechanisms for short circuits and overcurrent conditions. **Can the *VSS* and PGND pins be connected together?** Yes, they are both ground pins and should be connected to the system ground. What is the recommended operating temperature for the LM5069MM-2/NOPB? The device operates in the temperature range of -40°C to 125°C.

This completes the detailed overview of the LM5069MM-2/NOPB pinout, specifications, and common FAQs. If you need additional details, feel free to ask!