Rainbow-electronics MAX1976 Manual de usuario Pagina 4

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MAX1963/MAX1976
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
4 _______________________________________________________________________________________
GROUND-PIN CURRENT
vs. LOAD CURRENT
MAX1963/76 toc04
LOAD CURRENT (mA)
GROUND-PIN CURRENT (µA)
1001100.1
70
80
90
100
110
120
60
0.01 1000
V
OUT
= +3.0V
V
OUT
= +0.75V
V
OUT
= +1.5V
GROUND-PIN CURRENT
vs. INPUT VOLTAGE
MAX1963/76 toc05
INPUT VOLTAGE (V)
GROUND-PIN CURRENT (µA)
3.22.82.42.01.6
20
40
60
80
100
120
0
1.2 3.6
I
OUT
= 100mA
I
OUT
= 300mA
I
OUT
= 0mA
V
OUT
= 1.5V
GROUND-PIN CURRENT
vs. TEMPERATURE
MAX1963/76 toc06
TEMPERATURE (°C)
GROUND-PIN CURRENT (µA)
6040200-20
60
70
80
90
100
110
120
50
-40 80
I
OUT
= 100mA
I
OUT
= 300mA
I
OUT
= 0mA
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX1963/76 toc07
LOAD CURRENT (mA)
V
DROPOUT
(mV)
25020015010050
40
20
60
80
100
120
0
0 300
V
OUT
= +1.8V
V
OUT
= +3.0V
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX1963/76 toc08
FREQUENCY (kHz)
PSRR (dB)
100101
10
20
30
40
50
60
70
80
0
0.1 1000
V
OUT
= +0.75V
V
OUT
= +1.5V
V
OUT
= +3.0V
I
OUT
= 10mA
LINE-TRANSIENT RESPONSE
MAX1963/76 toc09
40µs/div
V
IN
500mV/div
1.5V
10mV/div
AC-COUPLED
V
OUT
3.5V
Typical Operating Characteristics (continued)
(V
IN
= (V
OUT
+ 0.5V) or 1.8V, whichever is greater; SHDN = IN, C
IN
= 1µF, C
OUT
= 4.7µF, T
A
= +25°C, unless otherwise noted.)
LINE-TRANSIENT RESPONSE
NEAR DROPOUT
MAX1963/76 toc10
40µs/div
V
IN
500mV/div
1.5V
10mV/div
AC-COUPLED
V
OUT
1.8V
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