Datasheet

MAX6018
Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (MAX6018_21–2.048V)
(V
IN
= 2.25V; C
OUT
= 47nF, I
OUT
= 0; T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
OUTPUT
MAX6018A_21 (0.2%) T
A
= +25°C
2.0439 2.0480 2.0521
Output Voltage V
OUT
MAX6018B_21 (0.4%) T
A
= +25°C
2.0398 2.0480 2.0562
V
Output Voltage Temperature Drift
TCV
OUT
(Note 2) 16 50
ppm/
o
C
Line Regulation
∆V
OUT
/
∆V
IN
2.25V ≤ V
IN
≤ 5.5V 45
330
µV/V
0 ≤ I
OUT
≤ 1mA 90
1000
µV/mA
Load Regulation
∆V
OUT
/
∆I
OUT -1mA ≤ I
OUT
≤ 0 0.3 50
µV/µA
Dropout Voltage (Note 3)
V
IN
- V
OUT
I
OUT
= 1mA
100 200
mV
Sourcing to GND 10
Short-Circuit Current I
SC
Sinking from V
IN
4
mA
Long-Term Stability
∆V
OUT
/
Time
1000hrs at T
A
= +25°C
100
ppm
Thermal Hysteresis (Note 4)
130
ppm
DYNAMIC CHARACTERISTICS
0.1Hz to 10Hz 50
µVp-p
Noise Voltage e
OUT
10Hz to 10kHz
175
µV
RMS
Ripple Rejection V
IN
= 2.25V ±100mV (f = 120Hz) 85 dB
Turn-On Settling Time t
R
Settling to 0.1%; C
OUT
= 5nF
200
µs
Capacitive-Load Stability Range
C
OUT
(Note 2)
0.1 1000
nF
INPUT
Supply Voltage Range V
IN
Guaranteed by Line Regulation Test
2.25
5.5 V
T
A
= +25°C35
Quiescent Supply Current I
IN
T
A
= T
MIN
to T
MAX
36
µA
Change in Quiescent Supply
Current vs. Input Voltage
∆I
IN
/∆V
IN
2.25V ≤ V
IN
≤ 5.5V 0.1 0.5
µA/V
Note 1: Devices are 100% production tested at T
A
= +25°C and are guaranteed by design from T
A
= T
MIN
to T
MAX
.
Note 2: Not production tested. Guaranteed by design.
Note 3: Dropout voltage is the minimum input voltage at which V
OUT
changes ≤ 0.2% from V
OUT
at rated V
IN
and is guaranteed by
Load Regulation Test.
Note 4: Thermal hysteresis is defined as the change in T
A
= +25°C output voltage before and after temperature cycling of the device
(from T
A
= T
MIN
to T
MAX
). Initial measurement at T
A
= +25°C is followed by temperature cycling the device to T
A
= +85°C
then to T
A
= -40°C and another measurement at T
A
= +25°C is compared to the original measurement at T
A
= +25°C.