GM1117
1A LOW DROPOUT
PRECISION VOLTAGE REGULATOR
Typical Performance Characteristics
0.10
T
CASE
= 0°C
Output Voltage Deviation (%)
0.08
0.06
0.04
0.02
0.00
-0.02
-0.04
-0.06
-0.08
-0.10
-0.12
0
20
40
60
80
100
120
0.95
T
CASE
= 25°C
V
DROPOUT
0.90
0.85
T
CASE
= 125°C
0.80
0.75
0
200
400
600
800
1000
I
OUT
(mA)
Figure 1. Dropout Voltage vs. Output Current
T
J
(°C)
Figure 2. Reference Voltage vs. Temperature
85
70
I
O
= 10mA
65
75
65
Adjust Pin Current (µA)
60
55
50
45
Ripple Rejection
55
45
35
25
15
T
CASE
=
125°C
I
O
= 10mA
V
IN
= V
OUT
+ 3V
V
RIPPLE
= 1.0V
P-P
C
ADJ
= 0.1µF
10
1
10
2
10
3
10
4
10
5
10
6
Frequency (Hz)
40
0
10 20
30
40
50
60
70
80
90
100 110 120 130
Temperature (°C)
Figure 3. Adjust Pin Current vs. Temperature
Figure 4. Ripple Rejection vs. Frequency
300
3.5
3.3
3.1
Load Step (mA) Voltage Deviation(mV)
200
100
2.9
0
-100
-200
1000
500
2.7
V
OUT
= 3.3V
C
OUT
= C
IN
= 22µF, Tantalum
C
Adj
= 0.1µF
2.5
I
SC
(A)
2.3
2.1
1.9
1.7
1.5
2.0
2.5
3.0
3.5
4.0
0
0
1
2
3
4
5
6
7
8
9
10
Time (µs)
V
IN
– V
OUT
(V)
Figure 5. Transient Response
Figure 6. Short Circuit Current vs. V
IN
-V
OUT
6
GM1117
V1.01
7
1.5
1.0
GAMMA [ GAMMA MICROELECTRONICS INC. ]
