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MIC2177BWM Datasheet(PDF) 6 Page - Micrel Semiconductor

Part # MIC2177BWM
Description  2.5A Synchronous Buck Regulator
PDF  15 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2177BWM Datasheet(HTML) 6 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2177
April 2008
6
M9999-042108
Typical Characteristics
175
180
185
190
195
200
205
-60 -30
0
30 60 90 120 150
TEMPERATURE (°C)
Oscillator Frequency
vs. Temperature
1.238
1.240
1.242
1.244
1.246
1.248
1.250
1.252
MIC2177 [adj.]
-60 -30
0
30 60 90 120 150
TEMPERATURE (°C)
Reference Voltage
vs. Temperature
3.280
3.285
3.290
3.295
3.300
3.305
3.310
3.315
3.320
MIC2177-3.3
-60 -30
0
30 60 90 120 150
TEMPERATURE (°C)
Reference Voltage
vs. Temperature
4.970
4.980
4.990
5.000
5.010
5.020
5.030
MIC21775.0
-60 -30
0
30 60 90 120 150
TEMPERATURE (°C)
Reference Voltage
vs. Temperature
16.0
16.5
17.0
17.5
18.0
18.5
19.0
-60 -30
0
30 60 90 120 150
TEMPERATURE (°C)
Error-Amplifier Gain
vs. Temperature
0
20
40
60
80
100
120
-60 -30
0
30 60 90 120 150
TEMPERATURE (°C)
Feedback Input Bias Current
vs. Temperature
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
-60 -30
0
30 60 90 120 150
TEMPERATURE (°C)
Current Limit
vs. Temperature
0
50
100
150
200
250
2468 10 12 14 16 18
INPUT VOLTAGE (V)
High-Side Switch
On-Resistance
125°C
85°C
25°C
0°C
0
50
100
150
200
250
300
350
2468 10 12 14 16 18
INPUT VOLTAGE (V)
Low-Side Switch
On-Resistance
125°C
85°C
25°C
0°C
0
2
4
6
8
10
12
2
4
6
8 10 12 14 16 18
INPUT VOLTAGE (V)
PWM-Mode
Supply Current
OUTPUT
SWITCHING
60
65
70
75
80
85
90
95
100
10
100
1000 2500
OUTPUT CURRENT (mA)
V
IN =5V
8V
12V
SKIP
PWM
3.3V Output
Efficiency
70
75
80
85
90
95
100
10
100
1000 2500
OUTPUT CURRENT (mA)
8V
12V
V
IN =6V
SKIP
PWM
5V Output
Efficiency



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