LP38691-ADJ_16 Datasheet, PDF (7/27 Pages) Texas Instruments – 500-mA Low-Dropout CMOS Linear Regulators Stable

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LP38691-ADJ, LP38693-ADJ, LP38691-ADJ-Q1, LP38693-ADJ-Q1
SNVS324K – JANUARY 2005 – REVISED JANUARY 2016
Typical Characteristics (continued)
Unless otherwise specified: T_J = 25°C, C_IN = C_OUT = 10 µF, EN pin is tied to IN (LP38693-ADJ only), V_OUT = 1.25 V, V_IN =
V_OUT 1 V, I_LOAD = 10 mA.
70
70
60
60
50
50
40
40
30
20 VIN (DC) = 3.25V
V_IN (AC) = 1V(p-p)
10
C_OUT = 100 PF
0
10
100
1k
10k
FREQUENCY (Hz)
100k
30
20
V_IN (DC) = 3.25V
V_IN (AC) = 1V(p-p)
10 ^COUT ^{= 1 PF}
0
10
100
1k
10k
FREQUENCY (Hz)
100k
Figure 5. Ripple Rejection
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
-50 -25 0 25 50 75 100 125
TEMPERATURE (^oC)
Figure 7. V_REF vs Temperature
V_OUT = 3.3V
20
C_OUT = 100 PF
10
V_OUT
0
-10
-20
5
V_IN
4
3
200 Ps/DIV
Figure 9. Line Transient Response
Figure 6. Ripple Rejection
V_OUT = 1.25V
20
C_OUT = 100 PF
10
V_OUT
0
-10
-20
4
V_IN
3
2
1
200 Ps/DIV
Figure 8. Line Transient Response
V_OUT = 1.25V
40
C_OUT = 10 PF
20
V_OUT
0
-20
-40
4
V_IN
3
2
1
200 Ps/DIV
Figure 10. Line Transient Response
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