LP38691-ADJ_16 Datasheet, PDF (6/27 Pages) Texas Instruments – 500-mA Low-Dropout CMOS Linear Regulators Stable

LP38691-ADJ, LP38693-ADJ, LP38691-ADJ-Q1, LP38693-ADJ-Q1
SNVS324K – JANUARY 2005 – REVISED JANUARY 2016
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Electrical Characteristics (continued)
Unless otherwise specified, limits apply for T_J = 25°C, V_IN = V_OUT + 1 V, C_IN = C_OUT = 10 µF, I_LOAD = 10 mA. Minimum and
maximum limits are specified through testing, statistical correlation, or design.
PARAMETER
TEST CONDITIONS
MIN
TYP ⁽¹⁾
MAX UNIT
Output = OFF state
Full operating temperature range
0.4
Output = ON state, V_IN = 4 V
V_EN
Enable voltage (LP38693
Only)
Full operating temperature range
Output = ON state, V_IN = 6 V
Full operating temperature range
1.8
3
V
Output = ON state, V_IN = 10 V
Full operating temperature range
4
I_EN
EN pin leakage
(LP38693 only)
V_EN = 0 V or 10 V, V_IN = 10 V
–1
0.001
1 µA
6.7 Typical Characteristics
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.
1.2
1.0
0.8
0.6
0.4
0.2
0.0
10
C_OUT = 1 PF
100
1k
10k
FREQUENCY (Hz)
100k
1.0
0.8
0.6
0.4
0.2
0.0
10
C_OUT = 10 PF
100
1k
10k
FREQUENCY (Hz)
100k
Figure 1. Noise vs Frequency
1.5
C_OUT = 100 PF
1.0
0.5
0.0
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 3. Noise vs Frequency
Figure 2. Noise vs Frequency
70
60
50
40
30
V_IN (DC) = 3.25V
20 _{VIN (AC) = 1V(p-p)}
C_OUT = 10 PF
10
0
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 4. Ripple Rejection
6
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