MIC23201 Datasheet, PDF (4/20 Pages) Micrel Semiconductor – 2MHz PWM 2A Buck Regulator

Micrel Inc.
Typical Characteristics
V_IN Operating Supply Current
vs. Input Voltage
50
40
30
20
10
0
2.5
V_OUT = 1.8V
I_OUT = 0A
SWITCHING
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
1.6%
1.4%
1.2%
1.0%
0.8%
0.6%
0.4%
0.2%
0.0%
2.5
Output Regulation
vs. Input Voltage
V_OUT = 1.8V
I_OUT = 0A to 2A
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
3000
2800
2600
2400
2200
2000
1800
1600
1400
1200
1000
2.5
Switching Frequency
vs. Input Voltage
V_OUT = 1.8V
I_OUT = 0A
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
MIC23201
V_IN Shutdown Current
vs. Input Voltage
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
V_EN = 0V
0.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
Current Limit
vs. Input Voltage
10
8
6
4
2
V_OUT = 1.8V
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
Enable Input Current
vs. Input Voltage
1.50
1.25
1.00
0.75
0.50
0.25
0.00
2.5
V_EN = V_IN
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
Feedback Voltage
vs. Input Voltage
0.640
0.632
0.624
0.616
0.608
0.600
2.5
V_OUT = 1.8V
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Enable Threshold
vs. Input Voltage
1.20
1.00
Rising
0.80
Falling
0.60
0.40
0.20
0.00
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
100
90
80
70
60
50
40
30
20
10
0
2.5
Power Good Threshold/V_REF
Ratio vs. Input Voltage
V_REF = 0.62V
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
August 2012
4
M9999-082912-A