MIC33050_09 Datasheet, PDF (4/13 Pages) Micrel Semiconductor – 4MHz Internal Inductor PWM Buck Regulator with HyperLight Load

Micrel, Inc.
Typical Characteristics
Efficiency V = 3.3V
OUT
100
V = 4.2V
IN
90
80
V = 5.0V
70 ^IN
V = 5.5V
IN
60
501
10
100
1000
OUTPUT CURRENT (mA)
Efficiency V = 1.0V
OUT
100
90
V = 2.7V
IN
80
70
V = 4.2V
IN
60
V = 3.6V
IN
L = 1uH
501
10
100
1000
OUTPUT CURRENT (mA)
Switching Frequency
vs. Temperature
5.5
5.0
4.5
4.0
3.5
V_IN = 3.6V
3.0
V_OUT = 1.8V
Load = 150mA
2.5
20 40 60 80
TEMPERATURE (°C)
Output Voltage
vs. Temperature
1.90
1.85
1.80
1.75
1.70
V_IN = 3.6V
V_OUT = 1.8V
No Load
20 40 60 80
TEMPERATURE (°C)
July 2009
Efficiency V = 1.8V
OUT
100
90
V = 3.0V
IN
80
70 _{V = 3.6V}
IN
60
V = 4.2V
IN
501
10
100
1000
OUTPUT CURRENT (mA)
Quiescent Current
vs. Temperature
40
30
20
10
V_IN = 3.6V
V_OUT = 1.8V
0
20 40 60 80
TEMPERATURE (°C)
Switching Frequency
vs. Input Voltage
5.5
5.0
4.5
4.0
3.5
3.0
2.25.7
V_OUT = 1.8V
Load = 150mA
3.2 3.7 4.2 4.7 5.2
INPUT VOLTAGE (V)
Output Voltage
vs. Input Voltage
1.90
1.85
1.80
1.75
Load = 20mA
1.720.7 _{3.2 3.7 4.2 4.7 5.2}
INPUT VOLTAGE (V)
4
MIC33050
Efficiency V = 1.2V
OUT
100
90
V = 2.7V
IN
80
70
V = 3.6V
IN
60
V = 4.2V
IN
501
10
100
1000
OUTPUT CURRENT (mA)
Quiescent Current
vs. Input Voltage
50
45
40
35
30
25
20
15
10
5
V_OUT = 1.8V
No Load
20.7 3.2 3.7 4.2 4.7 5.2
INPUT VOLTAGE (V)
Feedback Voltage
vs. Temperature
0.80
0.78
0.76
0.74
0.72
0.70
0.68
0.66
0.64
0.62
0.60
V_IN = 3.6V
V_OUT = 1.8V
No Load
20 40 60 80
TEMPERATURE (°C)
Output Voltage
vs. Output Current
1.90
1.85
1.80
1.75
1.700
V_IN = 3.6V
100 200 300 400 500 600
OUTPUT CURRENT (mA)
M9999-070909-C