MIC37252 Datasheet, PDF (4/8 Pages) Micrel Semiconductor – 2.5A, Low Voltage UCap LDO Regulator

MIC37252
Typical Characteristics
70
60 ^100mA
1A
50 _2.5A
40
PSRR
30
20 C_OUT = 100µF Ceramic
10 ^{VIN = 3.3V}
V = 1.8V
OUT
0
1 10 100 1k 10k 100k 1M
FREQUENCY (Hz)
Dropout
vs. Temperature
600
500
400
300
200
100 ^3.3VOUT
2.5A load
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Short Circuit Current
vs. Temperature
4
3.5
3
2.5
2
1.5
1 _{VOUT = 0V}
0.5 V_IN = 4.3V
-040 -20 0 20 40 60 80 100 120
TEMPERATURE T_J (°C)
Ground Current
vs. Output Current
50
45
40
35
30
25
20
15
10
5
0
0 0.5 1 1.5 2 2.5
OUTPUT CURRENT (A)
MIC37252
70
60
1A
50
40
PSRR
100mA
2.5A
30
20
C
OUT
=
47µF
10 ^{VIN = 3.3V}
V_OUT = 1.8V
0
1 10 100 1k 10k 100k 1M
FREQUENCY (Hz)
Output Voltage
vs. Temperature
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
1.77
1.76
1.75
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Ground Current
vs. Supply Voltage
50
45
40
35
2.5A
30
25
20
15
1.5A
10
5
0.5A
00
1
2
3
4
5
SUPPLY VOLTAGE (V)
2.510
Output Voltage
vs. Load Current
2.508
2.506
2.504
2.502
2.500
2.498
2.496
2.494
2.492 _2.5VOUT
2.490
0 0.5 1 1.5 2 2.5
OUTPUT CURRENT (A)
4
Micrel
Dropout Voltage
600
V_OUT = 3.3V
500
400
300
200
100
0
0 0.5 1 1.5 2 2.5
OUTPUT CURRENT (A)
Enable Pin Current
vs. Temperature
18
16
100mA Load
14
12
10
8
6
4
2
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Ground Current
vs. Temperature
50
2.5A Load
45
40
35
30
25
20
15 _{1A Load}
10
5 _{10mA Load}
0-40 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
Dropout Characteristics
2.0
1.8
0.5A
1.6
1.4
1.5A
1.2
1.0
0.8
0.6
0.4
2.5A
0.2
0.00
1
2
3
4
SUPPLY VOLTAGE (V)
January 2003