1
Getting started
1.1
Safety precautions
Caution:
All operations involving transportation, installation, use and maintenance of the board must be performed
by skilled technical personnel who is familiar with the installation, use and maintenance of power electronic
systems.
A system architecture that supplies power to the evaluation board must be equipped with additional control
and protective devices in accordance with the applicable safety requirements (i.e., compliance with technical
equipment and accident prevention rules).
The electrical installation shall be completed in accordance with the appropriate requirements (e.g., cross-
sectional areas of conductors, fusing, and GND connections).
1.2
Overview
•
3.5 V to 38 V operating input voltage
•
Programmable output voltage from 0.85 V to VIN
•
3.3 V and 5 V fixed output voltage versions
•
2 A DC output current
•
Low operating quiescent current (LCM and fixed Vout part numbers)
•
Internal compensation network
•
Two different versions: LCM for high efficiency at light loads and LNM for noise sensitive applications
•
2 μA shutdown current
•
Internal soft-start
•
Enable function
•
Overvoltage protection
•
Output voltage sequencing
•
Thermal protection
•
SO 8L package
•
Synchronization with external clock for LNM devices
1.3
Block diagram
Figure 2.
STEVAL-L6982CDR functional block diagram
EMI
filter
LOAD
Input
filter
Output
filter
Switching
regulator
Compensation
network
Enable/Clock
management
Enable
Clock
DC Input
V
OUT
UM2918
Getting started
UM2918
-
Rev 1
page 2/15
