MIC24051 Datasheet, PDF (7/30 Pages) Micrel Semiconductor – 12V, 6A High-Efficiency Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
VIN Operating Supply Current
vs. Temperature
20
VIN Shutdown Current
vs. Temperature
20
16
12
8
VIN = 12V
4
VOUT = 1.8V
IOUT = 0A
SWITCHING
0
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
15
10
5
0
-50 -25
VIN = 12V
I_OUT = 0A
V_EN = 0V
0 25 50 75 100 125
TEMPERATURE (°C)
MIC24051
VDD UVLO Threshold
vs. Temperature
5
RISING
4
FALLING
3
2
1
HYST
0
-50 -25 0
25 50 75 100 125
TEMPERATURE (°C)
Feedback Voltage
vs. Temperature
0.808
0.804
0.800
0.796
0.792
-50
VIN = 12V
VOUT = 1.8V
IOUT = 0A
-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 = 0A to 6A
-25 0 25 50 75 100 125
TEMPERATURE (°C)
Line Regulation
vs. Temperature
0.4%
0.3%
0.2%
0.1%
0.0%
-0.1%
-0.2%
-50
VIN = 4.5V to 19V
VOUT = 1.8V
IOUT = 0A
-25 0 25 50 75 100 125
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
700
650
600
550 VIN = 12V
VOUT = 1.8V
IOUT = 0A
500
-50 -25
0 25 50 75 100 125
TEMPERATURE (°C)
VDD
vs. Temperature
6
5
4
3
VIN = 12V
IOUT = 0A
2
-50 -25 0
25 50 75 100 125
TEMPERATURE (°C)
Output Current Limit
vs. Temperature
25
20
15
10
5
VIN = 12V
VOUT = 1.8V
0
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
November 2012
7
M9999-112612-A