Typical operating characteristics (continued) – Rainbow Electronics MAX8842 User Manual
Page 4
MAX8840/MAX8841/MAX8842
Ultra-Low-Noise, High PSRR, Low-Dropout,
150mA Linear Regulators in µDFN
4
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
IN
= V
OUT
+ 0.5V, C
IN
= 1µF, C
OUT
= 1µF, C
BP
= 10nF, T
A
= +25°C, unless otherwise noted.)
MAX8440
DROPOUT VOLTAGE vs. LOAD CURRENT
MAX8840 toc04
INPUT VOLTAGE (V)
DROPOUT VOLTAGE (mV)
125
100
75
50
25
40
20
80
60
120
100
160
140
200
180
0
0
150
T
A
= +85
°C
T
A
= +25
°C
T
A
= -40
°C
MAX8840
DROPOUT VOLTAGE vs. OUTPUT VOLTAGE
MAX8840 toc05
OUTPUT (V)
DROPOUT VOLTAGE (mV)
3.0
2.8
2.6
2.4
2.2
50
100
150
200
250
0
2.0
3.2
I
OUT
= 80mA
MAX8840
GROUND PIN CURRENT vs. INPUT VOLTAGE
MAX8840 toc06
INPUT VOLTAGE (V)
GROUND PIN CURRENT (
μ
A)
4
3
2
1
150
200
50
100
250
300
350
0
0
5
I
LOAD
= 150mA
I
LOAD
= 0mA
MAX8840
GROUND PIN CURRENT vs. LOAD CURRENT
MAX8840 toc 07
LOAD CURRENT (mA)
GROUND PIN CURRENT (
μ
A)
125
100
75
50
25
100
50
150
200
250
300
350
0
0
150
V
IN
= 3.8V
V
IN
= 5.5V
MAX8840
GROUND PIN CURRENT vs. TEMPERATURE
MAX8840 toc08
TEMPERATURE (
°C)
GROUND PIN CURRENT (
μ
A)
60
35
10
-15
35
40
45
50
30
-40
85
MAX8840
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX8840 toc09
FREQUENCY (kHz)
PSRR (dB)
1
10
100
0.1
40
50
60
10
20
30
70
80
90
0
0.01
1000
I
LOAD
= 10mA
C
BP
= 10nF
MAX8841
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX8840 toc10
FREQUENCY (kHz)
PSRR (dB)
0.1
1
10
100
40
50
60
10
20
30
70
80
90
0
0.01
1000
I
LOAD
= 10mA
MAX8840
OUTPUT NOISE
MAX8840 toc11
400
μs/div
V
IN
= 3.8V
I
LOAD
= 10mA
V
NOISE
= 11
μV
RMS
20
μV/div
MAX8840
OUTPUT NOISE-SPECTRAL DENSITY
vs. FREQUENCY
MAX8840 toc12
FREQUENCY (kHz)
OUTPUT NOISE DENSITY (nV/
√
Hz
)
0.1
1
10
100
1000
100
10,000
10
0.01
1000