MIC26903ZA_14 Datasheet, PDF (7/29 Pages) Micrel Semiconductor – 28V, 9A Hyper Speed Control Synchronous DC/DC Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
V_IN Operating Supply Current
vs. Temperature
30
25
20
15
10
V_IN = 12V
V_OUT = 1.8V
5
I_OUT = 0A
SWITCHING
0
-50 -25 0
25 50 75 100 125
TEMPERATURE (°C)
V_IN Shutdown Current
vs. Temperature
10
8
6
4
2
V_IN = 12V
I_OUT = 0A
V_EN = 0V
0
-50 -25 0
25 50 75 100 125
TEMPERATURE (°C)
Feedback Voltage
vs. Temperature
0.608
0.604
0.600
0.596
0.592
V_IN = 12V
V_OUT = 1.8V
I_OUT = 0A
0.588
-50 -25 0 25 50 75 100 125
TEMPERATURE (°C)
Load Regulation
vs. Temperature
0.2%
0.1%
0.0%
VIN = 12V
VOUT = 1.8V
IOUT =0A to 9A
-0.1%
-0.2%
-50
-25 0 25 50 75 100 125
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
700
VIN = 12V
VOUT = 1.8V
650
IOUT = 0A
600
550
500
-50 -25
0 25 50 75 100 125
TEMPERATURE (°C)
V_DD
vs. Temperature
6
5
4
VIN = 12V
3
VOUT = 1.8V
IOUT =0A
2
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
MIC26903-ZA
V_DD UVLO Threshold
vs. Temperature
5
Rising
4
Falling
3
2
1
Hyst
0
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
Line Regulation
vs. Temperature
0.2%
0.1%
0.0%
-0.1%
VIN = 4.5V to 28V
VOUT = 1.8V
IOUT = 0A
-0.2%
-50 -25 0 25 50 75 100 125
TEMPERATURE (°C)
Current Limit
vs. Temperature
20
15
10
VIN = 12V
VOUT = 1.8V
5
0
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
July 22, 2014
7
Revision 1.1