SC1112 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC1112' PDF : 23 Pages View PDF
POWER MANAGEMENT
Timing Diagrams
NORMAL STARTUP CONDITION
VTTIN
VTTIN=1.5V
VTT
The delay capacitor does not
begin charging until VTTIN has
reached 1.5V and VTT is above
the powergood threshold of
1.08V.
Once DELAY reaches 1.5V,
the PWRGD signal goes high. DELAY
VTTGATE initially turns on
hard, until VTT reaches
regulation. Then VTTGATE
drops to its normal regulating
level.
PWRGD
DELAY=1.5V
VTTGATE
SHORT-CIRCUIT STARTUP
VTTIN
VTTIN=1.5V
VTT
The delay capacitor does not
begin charging until VTTIN has
reached 1.5V and VTT is below
the short circuit threshold of
0.7V.
VTTGATE initially turns on hard
and is latched off when DELAY DELAY
reaches 1.5V and VTT is below
0.7V
DELAY=1.5V
PWRGD
VTTGATE
2006 Semtech Corp.
4
SC1112
www.semtech.com
Share Link: 
