Datasheet

Switch Mode Power Supply S8TS L-33
Power
Supplies
■ Inrush Current, Startup Time,
Hold Time
■ Undervoltage Indicator and
Undervoltage Detection Output
When a drop in the output voltage is detected, the red indicator (DC
LOW) lights and transistor (DC LOW: OUT) output turns ON. The
detection voltage is set to approximately 80% (75% to 90%) of the
rated output voltage.
This function monitors the voltage at the output terminals. For accu-
rate confirmation of the output status, measure the voltage at the
output terminal.
Note 1: Transistor output: Open collector
30 VDC max., 50 mA max.
ON residual voltage: 2 V max.
OFF leakage current: 0.1 mA max.
2: The indicators become dimmer as the output voltage ap-
proaches 0 V.
Undervoltage Output
90%
96.5%
Input ON Input OFF
Hold time (20 ms min.)
Inrush current on input application
Startup time
(1,000 ms max.)
Output
voltage
AC input
current
AC input
voltage
Status of indicator Voltage status Output
status
(See note 1.)
Higher than ap-
prox. 80% of the
rated output
voltage
ON
Less than ap-
prox. 80% of the
rated output
voltage
OFF
Close to 0 V OFF
DC ON
DC LOW
Green:
Red:
DC ON
DC LOW
Green:
Red:
(See
note 2.)
DC ON
DC LOW
Green:
Red:
+V−V
+V−V
DC LOW OUT DC LOW OUT
Blocks with Screw Terminals Blocks with Connector Terminals