MIC2176-1 Datasheet, PDF (7/31 Pages) Micrel Semiconductor – Wide Input Voltage, Synchronous Buck Controllers Featuring Adaptive On-Time Control

Micrel, Inc.
Typical Characteristics (Continued)
VDD Operating Supply Current
vs. Temperature
10
8
6
4
2
0
-50
MIC2176-2
VIN = 48V
VOUT = 3.3V
IOUT = 0A
VDD = 5V
SWITCHING
-20 10 40 70 100 130
TEMPERATURE (°C)
VIN Operating Supply Current
vs. Temperature
22
20
18
16
14
12
10
-50
MIC2176-2
VIN = 48V
VOUT = 3.3V
IOUT = 0A
VDD = 5V
SWITCHING
-20 10 40 70 100 130
TEMPERATURE (°C)
0.808
0.806
0.804
0.802
0.800
0.798
0.796
0.794
0.792
-50
Feedback Voltage
vs. Temperature
VIN = 48V
VOUT = 3.3V
IOUT = 0A
VDD = 5V
-20 10 40 70 100 130
TEMPERATURE (°C)
VDD Shutdown Current
vs. Temperature
1
0.8
0.6
0.4
VIN = 48V
IOUT = 0A
VDD = 5V
0.2
VEN = 0V
0
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
VIN Shutdown Current
vs. Temperature
30
25
20
15
10
5
0
-50
VIN = 48V
VDD = 5V
IOUT = 0A
-20 10 40 70 100 130
TEMPERATURE (°C)
Load Regulation
vs. Temperature
1.0%
0.8%
0.6%
0.4%
VIN = 48V
VOUT = 3.3V
VDD = 5V
IOUT = 0A to 5A
0.2%
0.0%
-0.2%
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
240
220
200
MIC2176-1
VIN = 48V
VOUT = 3.3V
IOUT = 0A
VDD = 5V
180
160
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
EN Bias Current
vs. Temperature
100
80
60
40
20
0
-50
VIN = 48V
VEN = 0V
VDD = 5V
-20 10 40 70 100 130
TEMPERATURE (°C)
November 2010
7
MIC2176
VDD UVLO Threshold
vs. Temperature
4.2
Rising
4.0
3.8
3.6
3.4
Falling
VIN = 48V
3.2
3.0
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
Current Limit
vs. Temperature
20
15
10
VIN = 48V
5
VOUT = 3.3V
VDD = 5V
0
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
Line Regulation
vs. Temperature
1.0%
0.8%
0.6%
0.4%
VIN = 6V to 70V
VOUT = 3.3V
IOUT = 0A
VDD = 5V
0.2%
0.0%
-0.2%
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
M9999-111710-A