MIC2224_06 Datasheet, PDF (5/13 Pages) Micrel Semiconductor – High Efficiency 2MHz PWM Buck Converter with DAC Input and 40mΩ Bypass Switch

Micrel, Inc.
Typical Characteristics
Efficiency 2.7V_OUT
100
3V_IN
95
90
3.6V_IN
85
4.2V_IN
80
75
700 _{0.1 0.2 0.3 0.4 0.5 0.6}
OUTPUT CURRENT (A)
100
95
90
85
80
75
70
65
60
55
500
Efficiency 1.2V_OUT
3V_IN
3.6V_IN
4.2V_IN
0.1 0.2 0.3 0.4 0.5 0.6
OUTPUT CURRENT (A)
1.827
Load Regulation
1.818
1.809
1.800
1.791
V_OUT = 1.8V
1.782 V_DAC = 0.6V
V_IN = 3.6V
1.7730 _{100 200 300 400 500 600}
LOAD CURRENT (mA)
Output Voltage
vs. DAC Voltage
4.5
4.0
3.5
3.0
2.5
125°C
-40°C
2.0
25°C
1.5
1.0
0.5
00 _{0.2 0.4 0.6 0.8 1.0 1.2 1.4}
DAC VOLTAGE (V)
September 2006
100
95
90
85
80
75
70
65
600
Efficiency 1.8V_OUT
3V_IN
3.5V_IN
4V_IN
0.1 0.2 0.3 0.4 0.5 0.6
OUTPUT CURRENT (A)
Efficiency 0.9V_OUT
100
90 ^3VIN
80
70
60
3.6V_IN
4.2V_IN
50
40
30
20
10
00 _{0.1 0.2 0.3 0.4 0.5 0.6}
OUTPUT CURRENT (A)
1.836
Output Voltage
vs. Temperature
1.827
1.818
1.809
1.800
1.791
1.782
1.773
1.764
1.755
V_DAC = 0.6V
1.74-640 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
Frequency
vs. Temperature
2.20
2.15
2.10
2.05
2.00
1.95
1.90
1.85
1.8-040 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
5
MIC2224
100
95
90
85
80
75
70
65
60
55
500
Efficiency 1.5V_OUT
3V_IN
3.6V_IN
4.2V_IN
0.1 0.2 0.3 0.4 0.5 0.6
OUTPUT CURRENT (A)
Efficiency 0.6V_OUT
100
90 _3VIN
80
70 ^3.6VIN
4.2V_IN
60
50
400 _{0.1 0.2 0.3 0.4 0.5 0.6}
OUTPUT CURRENT (A)
V_OUT/DAC
3.3
vs. Temperature
3.2
3.1
3.0
2.9
2.8
2.-740 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
Quiescent Current
vs. Temperature
450
400
350
300
250
200
150
100
50
V_IN = 3.6V
-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
M9999-091106