Datasheet

www.ti.com
EnableControlSchematic
1
2
3 ENABLE/SYNC
On/Off Control
V
I
+
V
I
−
V
I
+
V
I
−
On/OffEnableTurn-OnTime
t − Time − 1 ms/div
V
OU
T
(1 V/div)
V
EN
ABLE
(5 V/div)
I
IN
(100 mA/div)
PTMA403033
PTMA402050
PTMA401120
SLTS259B–FEBRUARY2006–REVISEDMAY2007
Figure15.TypicalOn/OffEnableControlCircuit
Onceenabled,theconverterexecutesasoft-startpowerup.Theconverterexibitsashortdelayofapproximately
100µs,measuredfromthetransitionoftheenablesignaltotheinstancetheV
O
Busoutputbeginstorise.The
outputisinregulationwithin1.5ms.
Figure16.OutputEnablePower-UpCharacteristic
13
SubmitDocumentationFeedback
Not Recommend for New Designs