MIC2176-1 Datasheet, PDF (6/31 Pages) Micrel Semiconductor – Wide Input Voltage, Synchronous Buck Controllers Featuring Adaptive On-Time Control

Micrel, Inc.
Typical Characteristics
VIN Operating Supply Current
vs. Input Voltage
30
25
20
15
10
5
0
0
MIC2176-2
V_OUT = 3.3V
I_OUT = 0A
V_DD = 5V
SWITCHING
10 20 30 40 50 60 70
INPUT VOLTAGE (V)
0.808
Feedback Voltage
vs. Input Voltage
0.806
0.804
0.802
0.800
0.798
0.796
0.794
0.792
0
VOUT = 3.3V
VDD = 5V
IOUT = 0A
10 20 30 40 50 60 70
INPUT VOLTAGE (V)
Switching Frequency
vs. Input Voltage
240
220
200
MIC2176-2
VOUT = 3.3V
IOUT = 0A
VDD = 5V
180
160
0
10 20 30 40 50 60 70
INPUT VOLTAGE (V)
MIC2176
40
35
30
25
20
15
10
5
0
0
VIN Shutdown Current
vs. Input Voltage
VDD = 5V
VEN = 0V
10 20 30 40 50 60 70
INPUT VOLTAGE (V)
1.0%
0.8%
0.6%
Total Regulation
vs. Input Voltage
VOUT = 3.3V
VDD = 5V
IOUT = 0A to 5A
0.4%
0.2%
0.0%
0
10 20 30 40 50 60 70
INPUT VOLTAGE (V)
VDD Operating Supply Current
vs. Input Voltage
10
8
6
MIC2176-2
4
VOUT = 3.3V
IOUT = 0A
2
VDD = 5V
SWITCHING
0
0 10 20 30 40 50 60 70
INPUT VOLTAGE (V)
Current Limit
vs. Input Voltage
20
15
10
5
VOUT = 1.2V
VDD = 5V
0
0 10 20 30 40 50 60 70
INPUT VOLTAGE (V)
November 2010
6
M9999-111710-A