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| TLD2314EL_15 Datasheet, PDF (19/31 Pages) Marl International Limited – Basic LED Driver | |||
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VI N _SET
VIN _SET( ref )
VST
VST( OL /SC)
TLD2314EL
Load Diagnosis
t
tOL
tIN_ SET(re set)
t
VOUT
VS
VS â VPS( OL)
VF
open load
occurs
open load
disappears
t
Figure 15 IN_SET and ST behavior during open load condition (ST unconnected) and VDEN > VDEN(act)
8.2
Short Circuit to GND detection
The TLD2314EL has an integrated SC to GND detection. If the output stage is turned on and the voltage at the
output falls below VOUT(SC) the potential on the IN_SET pin is increased up to VIN_SET(OL/SC) after tSC, if the ST pin
is connected to GND. If the ST is open or connected to GND via a high ohmic resistor the fault is indicated on the
ST pin according to Chapter 7 after tSC. More details are shown in Figure 17. This condition is not latched. For
detecting a normal condition after a short circuit detection an output current according to IOUT(SC) is driven by the
channel.
Data Sheet
19
Rev. 1.1, 2015-03-24
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