STEVAL-L7983V33

STEVAL-L7983V33 is an evolution board for step-down switching power supply based on the L7983PU33R regulator in a DFN10 3x3mm package with fixed 3.3V output voltage. The programmed switching frequency is 1MHz and can be adjusted by external clock or frequency programming resistor. The L7983 device is a step-down monolithic switching regulator able to deliver up to 300mA DC based on peak current mode architecture. The wide input voltage range and adjustable UVLO threshold meet the specification for the 12V, 24V and 48V industrial bus standards. L7983 supports dynamic Low Consumption Mode (LCM) to Low Noise Mode (LNM) transition. LCM is designed for applications which remain active in idle mode to maximize efficiency under light load condition with controlled output voltage ripple. LNM makes the switching frequency constant overload current range, meeting the low noise application specification.

• 3.5V to 60V operating input voltage
• Step-down (buck) conversion
• 1MHz selected switching frequency
• Dynamic low consumption mode to low noise mode selection
• Internal soft-start
• Synchronization to external clock
• Internal compensation network
• Auto recovery overcurrent, overvoltage and thermal protection