MIC33050_12 Datasheet, PDF (4/16 Pages) Micrel Semiconductor – 4MHz Internal Inductor PWM Buck Regulator with HyperLight Load®

Micrel, Inc.
Typical Characteristics
Efficiency V = 3.3V
OUT
100
90 ^{VIN = 4.2V}
80
70 ^{VIN = 5.0V}
V_IN = 5.5V
60
501
10
100
1000
OUTPUT CURRENT (mA)
Efficiency V = 1.0V
OUT
100
90
V_IN = 2.7V
80
70
V_IN = 4.2V
60 V_IN = 3.6V
L = 1uH
501
10
100
1000
OUTPUT CURRENT (mA)
MIC33050
Efficiency V = 1.8V
OUT
100
90
V_IN = 3.0V
80
70 _{VIN = 3.6V}
60
V_IN = 4.2V
501
10
100
1000
OUTPUT CURRENT (mA)
Efficiency V = 1.2V
OUT
100
90
V_IN = 2.7V
80
70
60 ^{VIN = 3.6V}
V_IN = 4.2V
501
10
100
1000
OUTPUT CURRENT (mA)
Quiescent Current vs.
T emperatur e
40
30
20
10
VIN = 3.6V
VOUT = 1.8V
0
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
Quiescent Current vs. Input
Voltage
50
45
40
35
30
25
20
15
VIN = 3.6V
10
VOUT = 1.8V
No Load
5
0
2.7
3.2
3.7
4.2
4.7
5.2
INPUT VOLTAGE (V)
Switching Frequency vs.
T emperatur e
5.5
5
4.5
4
3.5
3
2.5
-40 -20
VIN = 3.6V
VOUT = 1.8V
Load = 150mA
0 20 40 60 80 100 120
TEMPERATURE (°C)
Switching Frequency vs. Input
Voltage
5.50
5.00
4.50
4.00
3.50
3.00
2.50
2.70
VIN = 3.6V
VOUT = 1.8V
Load = 150mA
3.20 3.70 4.20 4.70 5.20
INPUT VOLTAGE (V)
0.5
0.48
0.46
0.44
0.42
0.4
0.38
0.36
0.34
0.32
0.3
-40
Feedback Voltage vs.
T emper atur e
VIN = 3.6V
VOUT = 1.8V
No Load
-20 0 20 40 60 80 100 120
TEMPERATURE (°C)
May 2012
4
M9999-050312-C