Introduction
The
evaluation board is based on the
synchronous monolithic step-down regulator capable of
delivering up to 2 A DC to the load.
Its wide input voltage range makes the device suitable for a broad range of applications.
The device implements peak current mode architecture in an SO 8L package with internal compensation to minimize design
complexity and size.
The
is available in low consumption mode version (LCM) as L6982CDR and low noise mode version (LNM) as
L6982NDR.
LCM maximizes efficiency at light load with controlled output voltage ripple, making the device extremely suitable for battery-
powered applications.
LNM makes the switching frequency constant and minimizes the output voltage ripple overload current range, meeting the
specification for noise sensitive applications.
The EN pin manages the enable/disable function. The typical shutdown current is 2 μA when disabled. When the EN pin is
pulled up, the device is enabled and the internal 1.3 ms soft-start takes place.
Pulse-by-pulse current sensing on both power elements implements effective constant current protection while thermal
shutdown prevents thermal run-away.
Figure 1.
STEVAL-L6982CDR evaluation board (top and bottom views)
Getting started with the STEVAL-L6982CDR synchronous step-down switching
regulator evaluation board based on the L6982CDR
UM2918
User manual
UM2918
-
Rev 1
-
September 2021
For further information contact your local STMicroelectronics sales office.
www.st.com
