Datasheet

INPUT CURRENT vs. INPUT VOLTAGE
MAX1982/83 toc01
INPUT VOLTAGE (V)
INPUT CURRENT (μA)
4.53.52.5
26
27
28
29
30
25
1.5 5.5
V
BIAS
= 5V
BIAS INPUT CURRENT
vs. INPUT VOLTAGE
MAX1982/83 toc02
INPUT VOLTAGE (V)
BIAS INPUT CURRENT (μA)
4.53.52.5
135
140
145
150
130
1.5 5.5
V
BIAS
= 5V
GROUND CURRENT vs. OUTPUT CURRENT
MAX1982/83 toc03
OUTPUT CURRENT (mA)
GROUND CURRENT (μA)
25020015010050
160
165
170
175
155
0300
V
BIAS
= 5V
V
IN
= 1.8V
Typical Operating Characteristics
(Circuit of Figure 3, T
A
= +25°C, unless otherwise noted.)
MAX1982/MAX1983
Low-Voltage, Low-Dropout Linear Regulators
with External Bias Supply
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 3, V
IN
= 1.8V, V
OUT
= 1.2V, I
LOAD
= 1mA, C
LOAD
= 10µF, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
SYM B O L
CONDITIONS
MIN MAX UNITS
MAX1983 0.80V
Output Voltage Accuracy
V
OUT
I
OUT
= 1mA to 300mA,
V
OUT
+ 0.5V < V
IN
< 5.5V
-3 +3 %
I
LOAD
= 300mA 350
Dropout Voltage V
DO
I
LOAD
= 150mA 175
mV
Current Limit I
LIM
V
IN
- V
OUT
= 1.3V
330 1400
mA
PGOOD COMPARATOR
Comparator Threshold % of regulated output voltage
-12.5
-6 %
LOGIC AND I/O
SHDN Input High Voltage V
IH
2.4 V
SHDN Input Low Voltage V
IL
0.8 V
SHDN Input Current -1 +1 µA
PGOOD Output Low Voltage PGOOD sinking 1mA 0.1 V
PGOOD Output High Leakage
Current
0 < V
PGOOD
< V
IN
-1 +1 µA
DYNAMICS
PGOOD Propagation Delay t
PD
Rising edge within 5% of regulation level 1 4 ms
Note 1: Specifications over temperature are guaranteed by design, not production tested.
Note 2: V
OUT
is 1.2V for MAX1982. For MAX1983 V
OUT
is set to 1.2V with circuit of Figure 4.