MIC23201 Datasheet, PDF (5/20 Pages) Micrel Semiconductor – 2MHz PWM 2A Buck Regulator

Micrel Inc.
Typical Characteristics (Continued)
V_IN Operating Supply Current
vs. Temperature
50
V_IN =3.3V
40
V_OUT = 1.8V
I_OUT = 0A
SWITCHING
30
20
10
0
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
Feedback Voltage
vs. Temperature
0.640
0.632
0.624
0.616
0.608
0.600
-50
V_IN = 3.3V
V_OUT = 1.8V
I_OUT = 0A
-25 0 25 50 75 100 125
TEMPERATURE (°C)
3000
2800
2600
2400
2200
2000
1800
1600
1400
1200
1000
-50
Switching Frequency
vs. Temperature
V_IN = 3.3V
V_OUT = 1.8V
I_OUT = 0A
-25 0 25 50 75 100 125
TEMPERATURE (°C)
V_IN Shutdown Current
10
vs. Temperature
9
V_IN = 3.3V
8
I_OUT = 0A
7
V_EN/DLY = 0V
6
5
4
3
2
1
0
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
2.0%
1.8%
1.6%
1.4%
1.2%
1.0%
0.8%
0.6%
0.4%
0.2%
0.0%
-50
Load Regulation
vs. Temperature
V_IN = 3.3V
V_OUT = 1.8V
I_OUT = 0A to 2A
-25 0 25 50 75 100 125
TEMPERATURE (°C)
Enable Threshold
vs. Temperature
1.20
V_IN = 3.3V
1.10
1.00
Rising
0.90
0.80
Falling
0.70
-50
-25 0 25 50 75
TEMPERATURE (°C)
100 125
MIC23201
V_IN UVLO Threshold
3.0
vs. Temperature
2.9
2.8
2.7
Rising
2.6
2.5
2.4
Falling
2.3
2.2
-50 -25
0
25
50 75 100 125
TEMPERATURE (°C)
0.50%
0.00%
Line Regulation
vs. Temperature
V_IN = 2.7V to 5.5V
V_OUT = 1.8V
-0.50%
-1.00%
-1.50%
-2.00%
-50 -25 0 25 50 75 100 125
TEMPERATURE (°C)
Current Limit
vs. Temperature
10
8
6
4
2
V_IN = 3.3V
V_OUT = 1.8V
0
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
August 2012
5
M9999-082912-A