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MIC5325_10 Datasheet, PDF (4/11 Pages) Micrel Semiconductor – Low VIN/VOUT 400mA ULDO with Ultra-Low IQ
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Micrel, Inc.
Typical Characteristics
Power Supply
Rejection Ratio (V IN)
-120
100mA
-100
-80
50mA
100µA (NO BYP)
100µA
-60
400mA
-40
-20
VIN = VOUT +1V
VOUT = 1.2V
COUT = 1µF
300mA
CBYP = 0.01µF
00.1
1
10 100
FREQUENCY (kHz)
1,000
Ground Current (V IN)
vs. Output Current
10
9
8
7
6
5
4
3
VIN = 2.8V
2
VOUT = 1.8V
1
COUT = 1µF
CBYP = 0.01µF
00 50 100 150 200 250 300 350 400
OUTPUT CURRENT (mA)
Output Voltage
2.0
1.8 100µA
vs. V IN
1.6
400mA
1.4
1.2
1.0
0.8
0.6
0.4
VBIAS = 5.5V
0.2
VOUT = 1.8V
COUT = 1µF
01 1.5 2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
Ground Current (V IN)
vs. Temperature
20
18
16
14
12
10
8
100µA
6
400mA
4
VBIAS = 3.6V
2
VIN = 2.8V
VOUT = 1.8V
-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
August 2010
Power Supply
Rejection Ratio (V BIAS)
-120
-100
-80
-60
100µA
100µA (NO BYP)
-40
VIN = VOUT +1V
-20
VOUT = 1.2V
COUT = 1µF
00.1CBYP
= 0.01µF
1
10
400mA
100
FREQUENCY (kHz)
1,000
Ground Current (V BIAS)
vs. Output Current
18
16
14
12
10
8
6
VBIAS = 3.6V
4
VIN = 2.8V
VOUT = 1.8V
2
COUT = 1µF
CBYP = 0.01µF
00 50 100 150 200 250 300 350 400
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Temperature
140
120
400mA
100
80
60
200mA
40
20
100mA
-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Current Limit
vs. V IN
900
875
850
825
800
775
750
725
700
675
650
625
VBIAS = 5.5V
VOUT = 1.8V
COUT = 1µF
CIN = 1µF
6010.5 2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
4
MIC5325
Ground Current (V IN)
vs. V IN
10
9
8
7
6
5
4
3
VBIAS = 5.5V
2
VOUT = 1.8V
1
COUT = 1µF
CBYP = 0.01µF
10.5 2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
Ground Current (Total)
vs. Output Current
30
28
26
24
22
20
18
16
14
12
100 50 100 150 200 250 300 350 400
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Output Current
140
120
100
80
60
VBIAS = 3.6V
40
VIN = 2.8V
COUT = 1µF
20
CBYP = 0.01µF
CBAIS = 1µF
CIN = 1µF
0
0 50 100 150 200 250 300 350 400
OUTPUT CURRENT (mA)
Output Voltage
vs. Output Current
1.8
1.75
1.7
1.65
1.60
VBIAS = 3.6V
VIN = 2.8V
COUT = 1µF
CBYP = 0.01µF
CIN = 1µF
50 100 150 200 250 300 350 400
OUTPUT CURRENT (mA)
M9999-080510-B
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