MIC37110 Datasheet, PDF (8/20 Pages) Micrel Semiconductor – High-Performance, Low-Noise, 1A LDOs

Micrel, Inc.
Typical Characteristics (Continued)
Dropout Voltage
vs. Output Current
400
VIN = 2.5V
VADJ = 0.95 * 1.0V
300
ADJUSTABLE OPTION
200
Dropout Voltage
vs. Output Current
400
VIN = 3.3V
300
VADJ = 0.95 * 1.0V
ADJUSTABLE OPTION
200
100
100
0
0.0
0.2
0.4
0.6
0.8
1.0
OUTPUT CURRENT (A)
0
0.0
0.2
0.4
0.6
0.8
1.0
OUTPUT CURRENT (A)
MIC37110/MIC37112
MIC37120/MIC37122
1.010
1.005
Adjust Pin Voltage
vs. Output Current
VIN = 2.5V
VOUT = 1.8V
1.000
0.995
0.990
0.0
0.2
0.4
0.6
0.8
1.0
OUTPUT CURRENT (A)
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
0.0
Line Regulation
vs. Output Current
VIN = 2.5V to 5.5V
VOUT = 1.4V
0.2
0.4
0.6
0.8
1.0
OUTPUT CURRENT (A)
GND Pin Current
vs. Output Current
400
VIN = 2.5V
VOUT = 1.8V
300
200
100
0
0.0
0.2
0.4
0.6
0.8
1.0
OUTPUT CURRENT (A)
Output Noise
vs. Frequency
10
Noise Spectral
Density
1
0.1
0.01
VIN =2.5V
VOUT = 1.8V
IOUT = 500mA
COUT = 10µF
0.001
0.01
0.1
1
10
100
1000
FREQUENCY (kHz)
PSRR vs. Frequency
10
0
V_IN =2.8V
V_OUT = 1.8V
-10
V_RIPPLE = 80mV
I_OUT = 100mA
-20
C_IN = 0uF
C_OUT = 10uF
-30
Gain (dB)
-40
-50
-60
-70
-80
0.01
0.1
1
10
100
FREQUENCY (kHz)
1000
10
0
-10
-20
-30
-40
-50
-60
-70
-80
0.01
PSRR vs. Frequency
VIN = 2.8V
VOUT = 2.2V
VRIPPLE= 80mV
IOUT = 1A
CIN = 1uF
COUT = 10uF
Gain (dB)
0.1
1
10
100
1000
FREQUENCY (kHz)
December 2012
8
M9999-121312-A