Datasheet
MAX1806
500mA, Low-Voltage Linear Regulator in µMAX
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
OUT(SETPOINT)
+ 500mV or V
IN
= +2.25V whichever is greater, SET = GND, SHDN = IN, T
A
= -40°C to +85°C, unless other-
wise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER-OK
POK Output Low Voltage V
OL
Sinking 2mA 50 mV
Operating Voltage Range for
Valid POK Output
Sinking 100µA 1.0 5.5 V
Output High-Leakage Current V
POK
= +5.5V 100 nA
Threshold Rising edge, referred to V
OUT(NOMINAL)
89 97 %
Note 1: Dropout voltage is defined as V
IN
- V
OUT
, when V
OUT
is 100mV below the value of V
OUT
and when V
IN
= V
OUT(NOM)
+0.5V.
For 2.25V ≤ V
OUT
≤ 4.0V, dropout voltage limits are linearly interpolated from the values listed. For V
OUT
< 4.0V, dropout
voltage limit is equal to the value for V
OUT
= 4.0V.
Note 2: Specifications to -40°C are guaranteed by design, not production tested.
Typical Operating Characteristics
(MAX1806EUA33, V
IN
= V
OUT
+ 500mV, SHDN = IN, C
IN
= 1µF, C
OUT
= 10µF, T
A
= +25°C, unless otherwise noted.)
0
1.0
0.5
2.0
1.5
3.0
2.5
3.5
1.5 2.5 3.02.0 3.5 4.0 4.5 5.0 5.5
OUTPUT VOLTAGE vs. INPUT VOLTAGE
MAX1806 toc01
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
I
OUT
= 0mA
I
OUT
= 500mA
6.0
3.25
3.26
3.28
3.27
3.30
3.31
3.29
3.32
0 200 300100 400 500 600 700 800
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX1806 toc02
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
3.28
3.30
3.29
3.32
3.31
3.33
3.34
-40 10-15 35 60 85
OUTPUT VOLTAGE vs. TEMPERATURE
MAX1806 toc03
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
V
IN
= V
OUT
+ 500mV
I
OUT
= 0
0
100
50
200
150
250
300
350
400
0 200 300100 400 500 600 700 800
DROPOUT VOLTAGE vs. LOAD CURRENT
MAX1806 toc04
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
0.14
0.16
0.18
0.20
0.22
0.24
0.26
0.28
2.0 2.5 3.0 3.5 4.0 4.5
DROPOUT VOLTAGE vs.
OUTPUT VOLTAGE
MAX1806 toc05
OUTPUT VOLTAGE (V)
DROPOUT VOLTAGE (V)
0
100
50
150
200
250
300
350
400
450
500
550
600
2.0 3.0 4.0 5.0 6.0
GROUND-PIN CURRENT vs.
INPUT VOLTAGE
MAX1806 toc06
INPUT VOLTAGE (V)
GROUND-PIN CURRENT (µA)
3.52.5 4.5 5.5
I
OUT
= 0mA
I
OUT
= 500mA