Datasheet

MAX1793
Low-Dropout, Low I
Q
, 1A Linear Regulator
_______________________________________________________________________________________ 5
0
100
50
200
150
250
300
0 600 800200 400 1000
1200
DROPOUT VOLTAGE vs. LOAD CURRENT
MAX1793 toc07
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
60
0
0.01 0.1 1 10 100 1000
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX1793 toc08
FREQUENCY (kHz)
PSRR (dB)
10
40
50
30
20
I
OUT
= 250mA
10
0.01
0.01
0.1 1 10 100 1000
OUTPUT NOISE SPECTRAL DENSITY
vs. FREQUENCY
MAX1793 toc09
FREQUENCY (kHz)
NOISE (µV/√Hz)
1
0.1
I
OUT
= 250mA
Typical Operating Characteristics (continued)
(Circuit of Figure 2, V
IN
= +5V, V
SHDN
= V
IN
,V
OUT
= +3.3V, T
A
= +25°C, unless otherwise noted.)
140
0
0.001 0.01 0.1 1
OUTPUT NOISE vs. LOAD CURRENT
60
40
MAX1793 toc10
LOAD CURRENT (A)
OUTPUT NOISE (µV
RMS
)
100
120
20
80
LINE-TRANSIENT RESPONSE
MAX1793 toc11
100µs/div
V
IN
5V
3.4V
10mV/div
AC-COUPLED
V
OUT
I
OUT
= 100mA
LOAD-TRANSIENT RESPONSE
MAX1793 toc12
40µs/div
I
OUT
1A
100mA
20mV/div
AC-COUPLED
V
OUT
OUTPUT NOISE
MAX1793 toc13
4ms/div
100µV/div