MIC25400 Datasheet, PDF (6/27 Pages) Micrel Semiconductor – 2A Dual Output PWM Synchronous Buck Regulator IC

Micrel, Inc.
Typical Characteristics
I_{DD_OFF} vs.
Input Voltage
6
-40°C
5
25°C
4
3
85°C
2
6
8
10
12
INPUT VOLTAGE (V)
Current Limit Threshold
vs. Input Voltage
3.20
25°C
3.15
3.10
3.05
3.00
6
8
10
12
INPUT VOLTAGE (V)
100.0
12V_IN Efficiency
vs. Output Current (09)
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
0.0
5Vo
1.8Vo
1.2Vo
0.7Vo
0.5
1.0
1.5
2.0
OUTPUT CURRENT (A)
60
55
50
45
40
35
30
25
20
6
I_{DD_ON} vs.
Input Voltage
25°C
85°C
-40°C
8
10
12
INPUT VOLTAGE (V)
Output Voltage
vs. Input Voltage
3.35
25°C
3.30
85°C
3.25
3.20
6
-40°C
8
10
12
INPUT VOLTAGE (V)
100.0
5V_IN Efficiency
vs. Output Current (09)
90.0
80.0
70.0
60.0
50.0
1.8Vo
40.0
1.2Vo
30.0
0.7Vo
20.0
0.0
0.5
1.0
1.5
2.0
OUTPUT CURRENT (A)
MIC25400
1.40
1.38
1.36
1.34
1.32
1.30
6
Enable Threshold
vs. Input Voltage
25°C
85°C
-40°C
8
10
12
INPUT VOLTAGE (V)
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
3.25
3.24
3.23
0.0
Load Regulation
25°C
85°C
-40°C
V_IN = 12V
V_OUT = 3.3V
0.5
1.0
1.5
2.0
OUTPUT CURRENT(A)
January 2011
6
M9999-020111-C