Datasheet

Block Diagram
VOUT
73VIN
1.0V
10 uA
Q
Pump
Constant
Power
Engine
6
+
-
V(DS) Detector
I(D)
Detector
+
4
GND
I
VOUT
1 FLT
V
IN
2
EN
+
1.15 V / 1.00 V
+
LCA
Fast Trip
Comparator
THERMAL
SHUTDOWN
+
2.85 V / 2.7 V
5
ISET
+
35 uA
1.4 uA
40 uA
6CT
0.16V
+
+
+
1.4V
S
R
Q
Q
uk:
P
LIM
V
IN
-500mV
+
8
PG
LATCH -1
RETRY -2
FACTORY
SET
Internal Rail
1.6uI
LIM
1.5uI
SET
I
LIM
1VyR
SET
I
SET
50NŸ
100Ÿ 16.80Ÿ
VIN
TPS2421-1
TPS2421-2
www.ti.com SLUS907G –JANUARY 2009–REVISED MAY 2013
BLOCK DIAGRAM
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Product Folder Links: TPS2421-1 TPS2421-2