MIC26903 MICREL [Micrel Semiconductor], MIC26903 Datasheet - Page 6

• Manufacturer Part Number: MIC26903
• Description: 28V, 9A Hyper Light Load Synchronous DC/DC Buck Regulator
• Manufacturer: MICREL [Micrel Semiconductor]

Micrel, Inc.
Typical Characteristics
July 2011
0.808
0.804
0.800
0.796
0.792
700
650
600
550
500
1.0
0.8
0.6
0.4
0.2
0.0
4
4
V
4
IN
Operating Supply Current
Switching Frequency
vs. Input Voltage
10
10
Feedback Voltage
vs. Input Voltage
vs. Input Voltage
10
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
16
16
16
V
I
OUT
V
I
SWITCHING
OUT
OUT
V
I
OUT
OUT
OUT
= 2A
= 1.8V
= 0A
= 1.8V
= 2A
= 1.8V
22
22
22
28
28
28
60
45
30
15
-0.1%
-0.2%
16
12
0.2%
0.1%
0.0%
0
8
4
0
4
4
4
V
R
V
EN
EN
IN
Enable Input Current
= 0V
= OPEN
10
10
vs. Input Voltage
vs. Input Voltage
Total Regulation
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Shutdown Current
10
vs. Input Voltage
INPUT VOLTAGE (V)
16
16
6
16
V
I
OUT
V
OUT
EN
= 2A to 9A
= 1.8V
= V
IN
22
22
22
28
28
28
10
20
16
12
100%
8
6
4
2
0
8
4
0
95%
90%
85%
80%
4
4
4.0
V
vs. Input Voltage
10
10
DD
vs. Input Voltage
vs. Input Voltage
10.0
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Current Limit
PG/V
INPUT VOLTAGE (V)
Output Voltage
REF
16
16
16.0
Ratio
M9999-071311-A
V
V
I
DD
REF
FB
V
= 10mA
OUT
= 0.9V
= 0.7V
MIC26903
22.0
22
= 1.8V
22
28.0
2
2
8
8