Datasheet

TIME (500 Ps/DIV)
C
BYP
= 0.1 PF
I
L
= 1 mA
V
SD
(1V/DIV)
V
OUT
(1V/DIV)
V
OUT
(1V/DIV)
TIME (50 Ps/DIV)
0.5
V
IN
= 4.3V
2.0
CURRENT (A)
1.0
1.5
0
LOAD CURRENT
(mA)
TIME (500 Ps/DIV)
'V
OUT
(50 mV/DIV)
250
C
IN
= C
OUT
= 2.2 PF
1
TIME (100 Ps/DIV)
C
BYP
= 0
I
L
= 1 mA
V
SD
(1V/DIV)
V
OUT
(1V/DIV)
V
IN
(V)
TIME (100 Ps/DIV)
'V
OUT
(20 mV/DIV)
4.9
C
IN
= C
OUT
= 2.2 PF
C
BYP
= 0
I
L
= 1 to 250 mA
4.3
V
IN
(V)
TIME (100 Ps/DIV)
'V
OUT
(10 mV/DIV)
4.9
C
IN
= C
OUT
= 2.2 PF
C
BYP
= 0.1 PF
I
L
= 1 to 250 mA
4.3
LP3997
www.ti.com SNVS272B –MAY 2004–REVISED MAY 2013
Typical Performance Characteristics. (continued)
Unless otherwise noted, SD = 950mV, V
IN
= V
OUT
+ 1.0V, C
IN
= 2.2 µF, I
OUT
= 1 mA, C
OUT
= 2.2 µF and C
BYP
= 0.1 µF.
Typical values and limits appearing in normal type apply for T
J
= 27°C. Limits appearing in boldface type apply over the full
temperature range for operation, −40 to +125°C.
Line Transient Line Transient
Load Transient (No C
BYP
) Enable Start-up Time
Enable Start-up Time Short Circuit Current
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