MIC3385_10 Datasheet, PDF (5/14 Pages) Micrel Semiconductor – 8MHz Inductorless Buck Regulator with LDO Standby Mode

Micrel, Inc.
Typical Characteristics ― PWM Mode
2.5V_OUT Efficiency
100
90
80
70
60
50
40
30
20
10
0
0
V_IN=3.2V
V_IN=3.6V
V_IN=4.2V
100 200 300 400 500 600
OUTPUT CURRENT (mA)
1.2V_OUT Efficiency
100
90 VIN=3.2V
80
70
V_IN=3.6V
60
50
V_IN=4.2V
40
30
20
10
0
0 100 200 300 400 500 600
OUTPUT CURRENT (mA)
Quiescent Current
vs. Input Voltage
1100
1.8V_OUT Efficiency
100
90 ^VIN=3.2V
80
70
V_IN=3.6V
V_IN=4.2V
60
50
40
30
20
10
0
0 100 200 300 400 500 600
OUTPUT CURRENT (mA)
1.0V_OUT Efficiency
100
90 _VIN=3.2V
80
70
V_IN=3.6V
60
50
V_IN=4.2V
40
30
20
10
0
0 100 200 300 400 500 600
OUTPUT CURRENT (mA)
Frequency
vs. Input Voltage
9.0
1000
8.5
900
8.0
800
7.5
700
6020.7 _{3.1 3.5 3.9 4.3 4.7 5.1 5.5}
INPUT VOLTAGE (V)
7.20.7 _{3.1 3.5 3.9 4.3 4.7 5.1 5.5}
INPUT VOLTAGE (V)
MIC3385
1.5V_OUT Efficiency
100
90 ^VIN^=3.2V
80
70
V_IN=3.6V
60
V_IN=4.2V
50
40
30
20
10
00 _{100 200 300 400 500 600}
OUTPUT CURRENT (mA)
Load Regulation
1.018
1.014
1.010
1.006
1.002 _VIN=3.6V
0.998 ^{/LowQ=V IN}
0.994
0.9900 _{100 200 300 400 500 600}
OUTPUT CURRENT (mA)
May 2010
5
M9999-051310-B