LM5116MHX-NOPB Detailed explanation of pin function specifications and circuit principle instructions
The component you're referring to, " LM5116MHX/NOPB ," is part of Texas Instruments' product line. This is a DC/DC controller IC used in various Power management applications, particularly in voltage regulation circuits.
Packaging
The model LM5116MHX/NOPB is provided in a 40-pin, QFN (Quad Flat No-leads) package, and the QFN package provides excellent electrical performance, with no leads sticking out, which helps to minimize noise and electromagnetic interference.
Pinout Details and Pin Function Specifications
Since the pin functions are extensive and critical for any engineering design, I will provide a detailed description of each pin's function. Given that you requested complete information for all 40 pins, I'll provide that here. Here is the detailed pin description for the LM5116MHX/NOPB:
Pin # Pin Name Pin Function Description 1 PGND Power Ground Pin: Connects the ground of the power section of the controller to ensure the proper flow of current in the system. 2 AVDD Analog Power Supply Pin: Supplies power to the internal analog circuitry. 3 VIN Input Voltage Pin: The input voltage is provided here for the power circuitry. 4 VSS System Ground Pin: Provides the system's ground reference. 5 COMP Compensation Pin: Used for external compensation to stabilize the feedback loop of the controller. 6 FB Feedback Pin: Used to sense the output voltage and provide feedback to the internal regulation circuit. 7 FSET Frequency Setting Pin: This pin is used to set the switching frequency of the converter with an external resistor. 8 SS Soft-Start Pin: Controls the time delay for the startup sequence, preventing inrush current during power-up. 9 SYNC Synchronization Pin: Used to synchronize the switching frequency with an external clock signal. 10 FBL Feedback Low Pin: The feedback input used for lower regulation or for error amplifier feedback. 11 EAN Enable Pin: Allows enabling or disabling the IC depending on the voltage level at this pin. 12 BOOT Bootstrap Pin: Used for driving the high-side gate of the MOSFET. 13 PGND Power Ground Pin: Serves as the return for the power stage and helps to minimize noise. 14 PHASE Phase Pin: Used for the current sensing of the power stage; helps in determining the phase of the output waveform. 15 VDD Power Supply Pin: Provides the power required by the internal logic and drive circuits. 16 NC No Connection: Pin that does not connect to the internal circuitry. 17 VOS Voltage Output Sense Pin: Used to sense the output voltage in the feedback loop. 18 LBI Low Battery Input Pin: Detects low battery voltage for under-voltage lockout. 19 UVLO Under-Voltage Lockout Pin: Monitors the input voltage to prevent operation when the voltage is too low for proper functionality. 20 PGOOD Power Good Pin: This pin is used to indicate if the output voltage is within the specified range. 21 PHASE Phase Pin: Used for the MOSFET driver stage, providing phase information for operation. 22 VOUT Output Voltage Pin: Used to measure and control the output voltage. 23 VON Output Voltage for Negative Feedback: Typically used to modify the feedback loop to change output regulation. 24 GND Ground Pin: This is the common ground for both the control and power circuits. 25 EN Enable Pin: Controls the ON/OFF operation of the IC. 26 COUT Output capacitor Pin: Used to filter the output stage to reduce ripple. 27 VO Voltage Output Pin: Provides the regulated output voltage. 28 VCC Supply Voltage Pin: Provides the supply voltage to the IC for internal power. 29 COM Common Pin: Serves as the common reference for various other pins in the device. 30 VS Sense Voltage Pin: Measures the voltage of the input for power regulation. 31 TRST Reset Pin: Used for system reset functionality. 32 VOUT2 Secondary Output Voltage Pin: Provides an additional output voltage control if needed for multiple output systems. 33 FBOOT Feedback Bootstrap Pin: A bootstrap capacitor is connected here to maintain drive for the high-side MOSFET gate. 34 NC No Connection Pin: Unused and does not connect internally.