MIC29302A Datasheet, PDF (7/20 Pages) Micrel Semiconductor – 3A Fast-Response LDO Regulator

Micrel, Inc.
Typical Characteristics (Continued)
Dropout Voltage
vs. Output Current
500
V_IN = 3V
400
V_ADJ = 0V
ADJUSTABLE OPTION
300
Dropout Voltage
vs. Output Current
500
V_IN = 4.2V
400
V_ADJ = 0V
300
200
200
100
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
100
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
MIC29302A
Adjust Pin Voltage
vs. Output Current
1.246
1.244
1.242
V_IN = 4.2V
V_OUT = 1.8V
1.240
1.238
1.236
0.0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
Line Regulation
vs. Output Current
0.2
0.1
0.0
-0.1
V_IN = 4.2V to 16V
V_OUT = 1.8V
-0.2
0.0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT CURRENT (A)
GND Pin Current
vs. Output Current
70
60
V_IN = 4.2V
V_OUT = 1.8V
50
40
30
20
10
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT CURRENT (A)
Output Noise
vs. Frequency
1000
Noise Spectral
100
Density
10
1
0.1
0.01
V_IN =3.3V
V_OUT = 1.8V
I_OUT = 3A
C_OUT = 47µF
0.001
0.01
0.1
1
10
100
FREQUENCY (kHz)
1000
Ripple Rejection (I_OUT = 10mA)
vs. Frequency
80
Gain (dB)
70
60
50
40
30
V_IN =3.3V
V_OUT = 1.8V
20
I_OUT = 10mA
C_OUT = 22µF
10
0
0.01
0.1
1
10
100
1000
FREQUENCY (kHz)
Ripple Rejection (I_OUT = 1.5A)
vs. Frequency
80
Gain (dB)
70
60
50
40
V_IN =3.3V
V_OUT = 1.8V
30
I_OUT = 1.5A
20
C_OUT = 22µF
10
0
0.01
0.1
1
10
100
1000
FREQUENCY (kHz)
Ripple Rejection (I_OUT = 3A)
vs. Frequency
80
Gain (dB)
70
60
50
40
V_IN =3.3V
V_OUT = 1.8V
30
I_OUT = 3A
20
C_OUT = 22µF
10
0
0.01
0.1
1
10
100
1000
FREQUENCY (kHz)
August 2011
7
M9999-080411-A