MIC2205-1.38YML MICREL [Micrel Semiconductor], MIC2205-1.38YML Datasheet - Page 5

• Manufacturer Part Number: MIC2205-1.38YML
• Description: 2MHz PWM Synchronous Buck Regulator with LDO Standby Mode
• Manufacturer: MICREL [Micrel Semiconductor]

Typical Characteristics – PWM Mode
Micrel, Inc.
April 2005
2.15
2.05
1.95
1.85
-10
-20
2.2
2.1
1.9
1.8
80
70
60
50
40
30
20
10
95
90
85
80
75
70
65
60
55
50
90
85
80
75
70
65
60
55
50
1E+2
0
100
2
-40 -20 0
0
0
V
V
L = 2.2 H
C
C
V
IN
OUT
OUT
F F
IN
100 200 300 400 500 600
= 3.6V
OUTPUT CURRENT (mA)
1.0V
OUTPUT CURRENT (mA)
= 120pF
V
V
1E+3
1.5V
vs. Temperature
V
= 3.6V
= 1.8V
IN
= 2.2 F
1k
IN
TEMPERATURE (°C)
100
FREQUENCY (Hz)
IN
= 4.2V
= 3.6V
V
= 4.2V
Frequency
Bode Plot
IN
OUT
Phase
OUT
20 40 60 80 100 120
V
= 3.6V
1E+4
IN
10k
200
Efficiency
= 3V
Efficiency
Gain
V
1E+5
IN
100k
300
= 3V
1E+6
1M
400
144
126
108
90
72
54
36
18
0
-18
-36
1.010
1.008
1.006
1.004
1.002
1.000
0.998
0.996
0.994
0.992
0.990
1200
1000
100
800
600
400
200
95
90
85
80
75
70
65
60
55
50
95
90
85
80
75
70
65
60
55
50
0
2.7
0
0
0
LowQ = V
V
LowQ = V
IN
vs. Supply Voltage
Peak Current Limit
2.5V
OUTPUT CURRENT (mA)
1.38V
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
V
Load Regulation
SUPPLY VOLTAGE (V)
V
= 3.6V
IN
100
100
100
IN
3.4
V
= 4.2V
IN
V
= 4.2V
OUT
IN
IN
= 3.6V
IN
OUT
= 3.6V
5
200
200
200
4.1
Efficiency
V
Efficiency
V
IN
IN
= 3V
= 3V
300
300
300
4.8
400
400
400
5.5
900
800
700
600
500
400
300
200
100
100
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
95
90
85
80
75
70
65
60
55
50
95
90
85
80
75
70
65
60
55
50
0
2.7
2.7
0
0
LowQ = V
V
V
IN
F B
vs. Supply Voltage
Quiescent Current
vs. Supply Voltage
100 200 300 400 500 600
1.8V
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
Enable Threshold
1.2V
SUPPLY VOLTAGE (V)
= 3.6V
SUPPLY VOLTAGE (V)
V
= 0.9V
V
100
3.4
3.4
IN
IN
V
= 4.2V
IN
= 4.2V
OUT
V
OUT
IN
= 3.6V
IN
V
= 3.6V
4.1
200
IN
4.1
Efficiency
Efficiency
V
= 3V
www.micrel.com
IN
M9999-041105
= 3V
4.8
300
4.8
MIC2205
5.5
400
5.5