Datasheet

MAX1982/MAX1983
Low-Voltage, Low-Dropout Linear Regulators
with External Bias Supply
_______________________________________________________________________________________ 5
INPUT CURRENT vs. TEMPERATURE
MAX1982/83 toc04
TEMPERATURE (°C)
I
IN
(μA)
603510-15
25.5
26.0
26.5
27.0
27.5
28.0
25.0
-40 85
V
BIAS
= 5V
BIAS SUPPLY CURRENT vs. TEMPERATURE
MAX1982/83 toc05
TEMPERATURE (°C)
I
BIAS
(μA)
603510-15
120
125
130
135
140
145
150
115
-40 85
V
BIAS
= 5V
DROPOUT VOLTAGE vs. OUTPUT CURRENT
MAX1982/83 toc06
OUTPUT CURRENT (mA)
DROPOUT VOLTAGE (mV)
25020015010050
50
100
150
200
0
0300
V
BIAS
= 5V
OUTPUT VOLTAGE ERROR
vs. OUTPUT CURRENT
MAX1982/83 toc07
OUTPUT CURRENT (mA)
V
OUT
ERROR (%)
25020050 100 150
-0.75
-0.50
-0.25
0
0.25
0.50
0.75
1.00
-1.00
0300
V
BIAS
= 5V
V
IN
= 1.8V
OUTPUT VOLTAGE ERROR vs. TEMPERATURE
MAX1982/83 toc08
TEMPERATURE (°C)
RELATIVE V
OUT
ERROR (%)
6035-15 10
-0.75
-0.50
-0.25
0
0.25
0.50
0.75
1.00
-1.00
-40 85
V
IN
= 1.8V
I
LOAD
= 300mA
I
LOAD
= 200mA
I
LOAD
= 0mA
SHORT-CIRCUIT CURRENT LIMIT
vs. INPUT VOLTAGE
MAX1982/83 toc09
INPUT VOLTAGE (V)
SHORT-CIRCUIT CURRENT LIMIT (mA)
4.503.502.50
100
200
300
400
500
600
700
800
0
1.50 5.50
POWER-SUPPLY REJECTION RATIO (V
IN
)
vs. FREQUENCY
MAX1982/83 toc11
FREQUENCY (Hz)
PSRR (dB)
100k10k1k100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
10 1M
V
IN
= 2.1V
V
P-P
= 0.6V
I
LOAD
= 0
SHORT-CIRCUIT CURRENT LIMIT
vs. TEMPERATURE
MAX1982/83 toc10
TEMPERATURE (°C)
SHORT-CIRCUIT CURRENT LIMIT (mA)
603510-15
550
600
650
700
500
-40 85
Typical Operating Characteristics (continued)
(Circuit of Figure 3, T
A
= +25°C, unless otherwise noted.)