Power Management
MICROELECTRONICS
A
A
GM66500 SERIES
5A ULTRA LOW - DROPOUT REGULATOR
TYPICAL CHARACTERISTICS
450
400
Dropout Voltage (mV)
350
300
250
200
150
100
50
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
0
V
OUT
= 2.5V
V
OUT
= 1.8V
Dropout Voltage (mV)
600
V
OUT
= 1.8V
500
400
300
200
100
I
LOAD
= 5A
0
-40 -20
Output Voltage (V)
2.8
2.6
2.4
2.2
2
1.8
1.6
0 20
40
60 80 100 120 140
1.4
3.2
2.2
1.8
1.4
1.6
Input Voltage(V)
2.6
2.4
2.8
3.0
3.6
3.4
2
I
LOAD
= 2.5A
I
LOAD
= 5A
I
LOAD
= 100mA
V
OUT
= 2.5V
Temperature (°C)
Output Current (mA)
Figure 1. Dropout Voltage vs. Output
Current
Figure 2. Dropout Voltage vs.
Temperature
Figure 3. Dropout Characteristics
180
160
Ground Current (mA)
Ground Current (mA)
140
120
100
80
60
40
20
0
0
2
4
6
8
10
Supply Voltage (V)
I
LOAD
= 2.5A
I
LOAD
= 2.0A
I
LOAD
= 5A
10
9
8
7
6
5
4
3
2
1
0
-40 -20
0
20 40
60
80 100 120 140
V
OUT
= 1.8V
V
OUT
= 2.5V
Ground Current (mA)
I
LOAD
= 10mA
V
IN
= V
OUT
+ 1V
30
25
20
15
10
5
0
-40 -20
V
OUT
= 2.5V
V
OUT
= 1.8V
I
LOAD
= 2.5A
V
IN
= V
OUT
+ 1V
0
20 40
60 80 100 120 140
Temperature (°C)
Temperature (°C)
Figure 4. Ground Current
vs. Supply Voltage
Figure 5. Ground Current
vs. Temperature
Figure 6. Ground Current
vs. Temperature
80
70
Ground Current (mA)
60
50
40
30
20
10
0
-40 -20
0
I
LOAD
= 5A
V
IN
= V
OUT
= 1V
20 40 60 80 100 120 140
Temperature (°C)
V
OUT
= 1.8V
V
OUT
= 2.5V
10
9
Short Circuit Current (A)
8
7
6
5
4
3
2
1
0
-40 -20
0
V
IN
= V
OUT
+ 1V
20 40 60 80 100 120 140
Temperature (°C)
Typical 1.8V Device
Flag Voltage(V)
Typical 2.5V Device
6
5
4
3
2
1
Flag Low (Fault)
10000
0.001
0.01
0.1
1
10
100
1000
100000
0
Flag High (OK)
Figure 7. Ground Current
vs. Temperature
Figure 8. Short Circuit Current
vs. Temperature
Resistance (k )
Figure 9. Error Flag Pull-up
Resistor
GM66500 SERIES
5
GAMMA [ GAMMA MICROELECTRONICS INC. ]
