RT9185
Typical Operating Characteristics
Temperature Stability
4.2
3.8
600
Quiescient Current
V
OUT1
= 3.35V
Output Voltage (V)
3.4
3
500
V
DD
= 5V
V
DD
= 6V
V
DD
= 4V
V
OUT2
= 2.55V
2.6
2.2
Iq (uA)
400
V
OUT3
= 1.8V/1.5V
1.8
1.4
-35
-40
-15
5
25
45
65
85
105
125
300
200
-40
-35
-15
5
25
45
65
85
105
125
Temperature
(°C)
Temperature
(°C)
Current Limit vs. Temperature
2.5
-10
PSRR
-20
-30
V
DD
= 5V
V
OUT1
2
Current Limit (A)
V
OUT2
1.5
V
DD
= 5V
C
1
= 2.2uF, C
2
= 4.7uF
C
3
= 4.7uF, C
4
= 1uF
I
O1
, I
O2
, I
O3
= 10mA
T
A
= 25°C
PSRR (dB)
-40
-50
-60
-70
1
V
OUT3
0.5
V
OUT2
V
OUT3
V
OUT1
10
100
0
-80
-40
-35
-15
5
25
45
65
85
105
125
1K
1000
10K
10000
100K
100000
1M
1000000
Temperature
(°C)
Frequency (Hz)
Dropout Valtage vs. Temperature
1
Short Thermal Shutdown
V
DD
= 5V
C
1
= 2.2uF
T
A
= 25°C
V
DD
= 5V
Dropout Valtage (V)
0.8
V
OUT2
= 2.55V
0.6
V
OUT1
= 3.35V
0.4
0.2
-40
-35
-15
5
25
45
65
85
105
125
I
Load1
(A)
Temperature
(°C)
DS9185-11 March 2007
Time (25ms/Div)
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