MIC27600_11 Datasheet, PDF (6/28 Pages) Micrel Semiconductor – 36V, 7A Hyper Speed Control™ Synchronous DC-DC Buck Regulator

Micrel, Inc.
Typical Characteristics
V_IN Operating Supply Current
vs. Input Voltage
20
16
12
8 VOUT = 3.3V
I_OUT = 0A
4 ^{VDD = 5V}
SWITCHING
0
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
0.808
Feedback Voltage
vs. Input Voltage
0.804
0.800
0.796
VOUT = 3.3V
VDD = 5V
IOUT = 0A
0.792
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
Switching Frequency
vs. Input Voltage
400
VOUT = 3.3V
VDD = 5V
350
IOUT = 0A
300
250
200
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
V_IN Shutdown Current
vs. Input Voltage
20
16
12
8
4
VDD = 5V
VEN = 0V
0
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
1.0%
0.8%
0.6%
Total Regulation
vs. Input Voltage
V_OUT = 3.3V
V_DD = 5V
I_OUT = 0A to 7A
0.4%
0.2%
0.0%
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
VDD Operating Supply Current
vs. Temperature
10
8
6
4
2
0
-50
VIN = 28V
VOUT = 3.3V
VDD = 5V
IOUT = 0A
SWITCHING
-20 10 40 70 100 130
TEMPERATURE (°C)
MIC27600
VDD Operating Supply Current
vs. Input Voltage
10
8
6
4
VOUT = 3.3V
2 ^{VDD= 5V}
SWITCHING
0
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
Current Limit
vs. Input Voltage
20
15
10
5
VOUT = 3.3V
VDD = 5V
0
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
V_DD Shutdown Current
vs. Temperature
1
0.8
0.6
0.4 V_IN = 28V
I_OUT = 0A
0.2 V_DD = 5V
V_EN = 0V
0
-50 -20 10 40 70 100 130
TEMPERATURE (°C)
July 2011
6
M9999-070811