MIC23150 Micrel Semiconductor, MIC23150 Datasheet - Page 4

• Manufacturer Part Number: MIC23150
• Description: 4MHz PWM 2A Buck Regulator
• Manufacturer: Micrel Semiconductor

Typical Characteristics
Micrel Inc.
February 2009
1.95
1.85
1.75
1.65
100
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.9
1.8
1.7
1.6
4.5
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
3.5
90
80
70
60
50
40
0.1
2.7
2.7
2
L = 1.0µH
C
V
L =1.0µH
C
LOAD = 120mA
V
Load = 100mA
IN
OUT
IN
OUT
Switching Frequency
Load = 10mA
3.2
= 2.7V
3.2
OUTPUT CURRENT (mA)
= 3.6V
1
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
vs. Input Voltage
vs. Input Voltage
TEMPERATURE (°C)
V
= 4.7µF
vs. Temperature
= 4.7µF
Output Voltage
IN
Current Limit
V
= 4.2V
3.7
3.7
Efficiency
V
OUT
IN
V
10
IN
= 5.0V
= 3.0V
4.2
4.2
L = 1.0µH
C
= 1.8V
OUT
100 1000 10000
Load = 1mA
4.7
4.7
= 4.7µF
V
V
IN
IN
= 3.6V
= 5.5V
5.2
5.2
5.7
5.7
0.001
0.01
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
1.77
1.76
1.75
100
0.1
90
80
70
60
50
40
40
35
30
25
20
15
10
10
0.1
2.7
5
0
1
1
L = 1.0µH
C
Not Switching
L = open
V
L =1.0µH
C
LOAD = 120mA
V
OUT
OUT
OUT
IN
Switching Frequency
3.2
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
V
V
= 3.0V
Quiescent Current
vs Output Current
1
INPUT VOLTAGE (V)
vs. Input Voltage
TEMPERATURE (°C)
= 4.7µF
= 1.2V × V
vs. Temperature
IN
IN
= 4.7µF
10
Output Voltage
= 4.2V
= 5.0V
V
3.7
Efficiency
OUT
10
4
V
100
4.2
= 3.3V
IN
NOM
L = 1.0µH
V
C
100 1000 10000
V
= 4.2V
25°C 125°C
OUT
OUT
V
IN
4.7
IN
= 3.6V
1000
= 1.8V
= 4.7µF
= 5.5V
-40°C
5.2
10000
5.7
1.95
1.85
1.75
1.65
1.88
1.86
1.84
1.82
1.78
1.76
1.74
1.72
100
1.9
1.8
1.7
1.6
1.9
1.8
1.7
1.2
1.0
0.8
0.6
0.4
0.2
95
90
85
80
75
70
65
60
55
50
0.1
2
2.7
0.1
0
Load = 1000mA Load = 1500mA
Load = 200mA
V
L = 1.0µH
V
C
L = 1.0µH
C
ENABLE ON
IN
OUT
OUT
OUT
3.2
= 4.2V
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
V
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L = 0.68µH
vs Output Current
Various Inductors
1
vs. Input Voltage
INPUT VOLTAGE (V)
1
= 1.8V
= 4.7µF
TEMPERATURE (°C)
Enable Thresold
IN
vs. Temperature
= 4.7µF
Output Voltage
Output Voltage
Efficiency with
L = 1.5µH
= 2.7V
ENABLE OFF
3.7
V
IN
10
10
= 5.5V
4.2
V
V
C
Load = 600mA
IN
OUT
OUT
M9999-082908-A
100
100 1000 10000
L = 2.2µH
L = 1.0µH
= 3.6V
4.7
V
= 1.8V
= 4.7µF
IN
VIN = 2.7V
VIN = 3.6V
VIN = 5.5V
1000 10000
= 3.6V
MIC23150
5.2
5.7