MIC22705_11 Datasheet, PDF (7/29 Pages) Micrel Semiconductor – 1MHz, 7A Integrated Switch High-Efficiency Synchronous Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
VIN Operating Supply Current
vs. Temperature
20.0
VIN Shutdown Current
vs. Temperature
20
15.0
15
10.0
5.0
0.0
-50
VIN = 5.0V
V_OUT = 1.8V
I_OUT = 0A
SWITCHING
-20 10 40 70 100 130
TEMPERATURE (°C)
0.707
0.704
0.700
Feedback Voltage
vs. Temperature
VIN = 5.0V
VOUT = 1.8V
IOUT = 0A
0.697
0.693
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
1200
1100
Switching Frequency
vs. Temperature
V_IN = 5.0V
V_OUT = 1.8V
I_OUT = 0A
1000
900
800
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
10
5
0
-50
V_IN = 5.0V
IOUT = 0A
V_EN/DLY = 0V
-20 10 40 70 100 130
TEMPERATURE (°C)
1.0%
0.8%
0.6%
Load Regulation
vs. Temperature
VIN = 5.0V
VOUT = 1.8V
IOUT = 0A to 7A
0.4%
0.2%
0.0%
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
Enable Threshold
vs. Temperature
1.5
1.4
1.3
RISING
1.2
1.1
V_IN = 5V
1.0
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
MIC22705
VIN UVLO Threshold
vs. Temperature
3.0
2.8
RISING
2.6
2.4
2.2
-50
FALLING
-20 10 40 70 100 130
TEMPERATURE (°C)
0.5%
0.4%
0.3%
Line Regulation
vs. Temperature
VIN = 2.9V to 5.0V
VOUT = 1.8V
IOUT = 0A
0.2%
0.1%
0.0%
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
Current Limit
vs. Temperature
20
V_IN = 5.0V
V_OUT = 1.8V
15
10
5
0
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
March 2011
7
M9999-033111-A