MIC24054 Datasheet, PDF (7/30 Pages) Micrel Semiconductor – 12V, 9A High-Efficiency Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
VIN Operating Supply Current
vs. Temperature
1.0
0.8
0.6
0.4
0.2
0.0
-50
VIN = 12V
VOUT = 1.8V
IOUT = 0A
SWITCHING
-25 0 25 50 75 100 125
TEMPERATURE (°C)
VIN Shutdown Current
vs. Temperature
14
12
10
8
6
4
VIN = 12V
2
I_OUT = 0A
V_EN = 0V
0
-50 -25
0 25 50 75 100 125
TEMPERATURE (°C)
MIC24054
VDD UVLO Threshold
vs. Temperature
4.9
RISING
3.9
FALLING
2.9
1.9
0.9
HYST
-0.1
-50
-25 0 25 50 75
TEMPERATURE (°C)
100 125
Feedback Voltage
vs. Temperature
0.808
0.804
0.800
0.796
0.792
0.788
-50
VIN = 12V
VOUT = 1.8V
IOUT = 2A
-25 0 25 50 75 100 125
TEMPERATURE (°C)
Load Regulation
vs. Temperature
1.0%
0.5%
0.0%
-0.5%
-1.0%
-50
VIN = 12V
VOUT = 1.8V
IOUT =2A to 9A
-25 0 25 50 75 100 125
TEMPERATURE (°C)
Line Regulation
vs. Temperature
0.3%
0.2%
0.1%
0.0%
-0.1%
-0.2%
-0.3%
-0.4%
-0.5%
-0.6%
-50
VIN = 4.5V to 19V
VOUT = 1.8V
IOUT = 2A
-25 0 25 50 75 100 125
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
700
650
600
550
500
-50 -25
VIN = 12V
VOUT = 1.8V
IOUT = 2A
0 25 50 75 100 125
TEMPERATURE (°C)
VDD
vs. Temperature
6
5
4
3
VIN = 12V
VOUT = 1.8V
IOUT =0A
2
-50 -25 0
25 50 75 100 125
TEMPERATURE (°C)
Output Current Limit
vs. Temperature
20
15
10
5
VIN = 12V
VOUT = 1.8V
0
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
October 2012
7
M9999-102512-A