Datasheet

1000
10000 100000 1000000
FREQUENCY (Hz)
0
10
20
30
40
50
60
70
80
PSRR (dB)
C
OUT
= 4.7 PF Tantalum
C
BIAS
= 1 PF Tantalum
I
L
= 10 mA
-40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (
o
C)
0
50
100
150
200
250
300
350
400
450
I
ADJ
(nA)
500
555
560
565
V
ADJ
(
mV
)
V
ADJ
I
ADJ
1000 10000 100000 1000000
FREQUENCY (Hz)
0
10
20
30
40
50
60
70
80
90
100
PSRR (dB)
C
OUT
= 4.7 PF Tantalum
I
LOAD
= 10 mA
1000 10000 100000 1000000
FREQUENCY (Hz)
0
10
20
30
40
50
60
70
80
90
100
PSRR (dB)
100
C
BIAS
= 1 PF Tantalum
I
L
= 0
V
OUT
= 1.2V
0.8
I
LOAD
(A)
DROPOUT VOLTAGE (V)
0.60.40.20
0
0.02
0.06
0.04
0.08
0.10
0.12
25
o
C
-40
o
C
125
o
C
V
BIAS
= 5V
20 Ps/DIV
5
4
6
V
BIAS
(V)
V
BIAS
V
OUT
'V
OUT
(mV)
I
L
= 10 mA
V
OUT
= 1.2V
V
IN
= 1.7V
-10
0
10
LP38841-ADJ
www.ti.com SNVS305C –FEBRUARY 2005–REVISED APRIL 2013
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise specified: T
J
= 25°C, C
IN
= 10 µF CER, C
OUT
= 22 µF CER, C
BIAS
= 1 µF CER, S/D Pin is tied to V
BIAS
, V
OUT
= 1.2V, I
L
= 10mA, V
BIAS
= 5V, V
IN
= V
OUT
+ 1V.
V
BIAS
Transient Response Dropout Voltage Over Temperature
Figure 2. Figure 3.
V
BIAS
PSRR V
BIAS
PSRR
Figure 4. Figure 5.
V
IN
PSRR V
ADJ
/ I
ADJ
vs Temperature
Figure 6. Figure 7.
Copyright © 2005–2013, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Links: LP38841-ADJ