Datasheet

cv
+
-
+
-
S
R
R
Q
+
-
GND
FB
SW
VIN
EN
+
-
+
-


DRIVER
Artificial
Ramp
SHDN
Thermal
SHDN
OVP
1.6 MHz
CompInternal -
SENSE
I
LIMIT
I
LDOInternal -
STARTSOFT-
PFET
SENSE
I
ENABLE and UVLO
15.1 x
REF
V
Control Logic
V
REF
= 0.6V
LM2831
www.ti.com SNVS422C –AUGUST 2006–REVISED APRIL 2013
Typical Performance Characteristics (continued)
All curves taken at VIN = 5.0V with configuration in typical application circuit shown in Applications Information section of this
datasheet. T
J
= 25°C, unless otherwise specified.
Gain vs Frequency (Vin = 5V, Vo = 1.2V @ 1A) Phase Plot vs Frequency (Vin = 5V, Vo = 1.2V @ 1A)
Figure 21. Figure 22.
Simplified Block Diagram
Figure 23.
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