STEVAL-ISA209V1

STEVAL-ISA209V1 is a 38V, 3A synchronous step-down switching regulator evaluation board based on the L6983NQTR. The L6983 is an easy to use synchronous monolithic step-down regulator capable of delivering up to 3A DC to the load, and the wide input voltage range makes the device suitable for a broad range of applications. The L6983NQTR used in this evaluation board is based on peak current mode architecture and is packaged in a QFN16 3x3 with internal compensation, thus minimizing design complexity and size. The L6983 is available in low consumption mode (LCM) and low noise mode (LNM) versions. LCM maximizes the efficiency at light-load with controlled output voltage ripple, which is ideal for battery-powered applications. LNM sets the switching frequency and minimizes the output voltage ripple overload current range, meeting the specification for low noise sensitive applications.

• Operating input voltage range from 3.5V to 38V
• Output voltage from 0.85V to VIN
• 3.3V and 5V fixed output voltage versions
• 17µA operating quiescent current
• Internal compensation network
• LCM for high efficiency at light loads and LNM for noise sensitive applications
• Internal soft-start, enable, overvoltage protection
• Thermal protection and output voltage sequencing
• Power good and optional spread spectrum for improved EMC
• Synchronization to external clock for LNM devices