LP38691_15 Datasheet, PDF (7/34 Pages) Texas Instruments – LP3869x/-Q1 500-mA Low-Dropout CMOS Linear Regulators Stable With Ceramic Output Capacitors

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LP38691, LP38693, LP38691-Q1, LP38693-Q1
SNVS321N – JANUARY 2005 – REVISED MARCH 2015
7.7 Typical Characteristics
Unless otherwise specified: T_J = 25°C, C_IN = C_OUT = 10 µF, EN pin is tied to IN (LP38693 only), V_OUT = 1.8 V, V_IN = V_OUT 1 V,
I_L = 10 mA.
Figure 1. Noise vs Frequency
Figure 3. Noise vs Frequency
60
50
40
30
20 ^{COUT = 100 2F}
V_IN(DC) = 5.3V
10 ^{VIN(AC) = 1V(p-p)}
V_OUT = 3.3V
0
10
100
1k
10k
FREQUENCY (Hz)
100k
Figure 5. Ripple Rejection
Figure 2. Noise vs Frequency
60
50
40
30
20 ^COUT ^{= 10 2F}
V_IN(DC) = 5.3V
10 ^{VIN(AC) = 1V(p-p)}
V_OUT = 3.3V
0
10
100
1k
10k
FREQUENCY (Hz)
100k
Figure 4. Ripple Rejection
60
50
40
30
C_OUT = 1 2F
20 _{VIN(DC) = 5.3V}
V_IN(AC) = 1V(p-p)
10 V_OUT = 3.3V
0
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 6. Ripple Rejection
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