MIC26950_11 Datasheet, PDF (6/28 Pages) Micrel Semiconductor – 12A Hyper Speed ControlTM Synchronous DC-DC Buck Regulator

Micrel, Inc.
Typical Characteristics
VIN Operating Supply Current
vs. Input Voltage
10.0
8.0
6.0
4.0
2.0
0.0
4
VOUT = 1.2V
VDD = 5V
SWITCHING
IOUT = 0A
10
16
22
28
INPUT VOLTAGE (V)
0.808
0.806
0.804
0.802
0.800
0.798
0.796
0.794
0.792
4
Feedback Voltage
vs. Input Voltage
VOUT = 1.2V
VDD = 5V
IOUT = 0A
10
16
22
28
INPUT VOLTAGE (V)
Switching Frequency
vs. Input Voltage
390
345
VOUT = 1.2V
VDD = 5V
IOUT = 0A
300
255
210
4
10
16
22
28
INPUT VOLTAGE (V)
VIN Shutdown Current
vs. Input Voltage
20
16
12
8
4
VDD = 5V
VEN = 0V
0
4
10
16
22
28
INPUT VOLTAGE (V)
1.0%
0.8%
0.6%
0.4%
0.2%
0.0%
4
Total Regulation
vs. Input Voltage
VOUT = 1.2V
VDD = 5V
IOUT = 0A to 12A
10
16
22
28
INPUT VOLTAGE (V)
MIC26950
VDD Operating Supply Current
vs. Input Voltage
20
16
12
8
4
0
4
VOUT = 1.2V
VDD = 5V
SWITCHING
10
16
22
28
INPUT VOLTAGE (V)
30
25
20
15
10
5
0
4
Current Limit
vs. Input Voltage
VOUT = 1.2V
VDD = 5V
8 12 16 20 24 28
INPUT VOLTAGE (V)
July 2011
6
M9999-070111-C