Datasheet

4 5 6 7 3 2 1
EP
VOUT
FB RON SS
VIN
EN GND
V
IN
C
IN
2
10 PF
Enable
4.5V to 20V
C
FF
0.022 PF
U1
C
SS
0.022 PF
R
FBB
1.07k
LMZ12003EXTTZ-ADJ
1.8V
O
@ 3A
C
O
1
1 PF
C
O
2
100 PF
R
ON
32.4k
R
ENT
32.4k
R
ENB
11.8k
R
FBT
1.37k
C
IN
1
1 PF
LMZ12003EXT
SNVS663G –JUNE 2010–REVISED OCTOBER 2013 www.ti.com
PRE-BIASED STARTUP
The LMZ12003EXT will properly start up into a pre-biased output. This startup situation is common in multiple rail
logic applications where current paths may exist between different power rails during the startup sequence. The
following scope capture shows proper behavior during this event.
Figure 26. Pre-Biased Startup
Evaluation Board Schematic Diagram
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Product Folder Links: LMZ12003EXT