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MIC2155 Datasheet(PDF) 9 Page - Micrel Semiconductor

Part # MIC2155
Description  2-Phase, Single Output, PWM Synchronous Buck Control IC
PDF  33 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2155 Datasheet(HTML) 9 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2155/2156
May 2009
9
M9999-052709-A
(408) 944-0800
Typical Characteristics
3.90
3.92
3.94
3.96
3.98
4.00
4.02
4.04
4.06
4.08
TEMPERATURE (°C)
VIN1 UVLO Threshold
UVLO Rising
UVLO Falling
2.40
2.45
2.50
2.55
2.60
2.65
2.70
2.75
TEMPERATURE (°C)
VIN2 UVLO Threshold
UVLO Rising
UVLO Falling
0
1
2
3
4
5
6
7
8
9
4
6
8
1012
1416
INPUT VOLTAGE (V)
Quiescent Current 1
vs. Input Voltage
No Switching
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
4
6
8
1012
1416
INPUT VOLTAGE (V)
Quiescent Current 2
vs. Input Voltage
No Switching
0
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
0.20
4
6
8
1012
1416
INPUT VOLTAGE (V)
Shutdown Current
vs. Input Voltage
ENABLE1,2 = 0V
IQ1
IQ2
0.88
0.90
0.92
0.94
0.96
0.98
1.00
1.02
1.04
1.06
1.08
TEMPERATURE (°C)
Enable Threshold
vs. Temperature
V
IN
= 12V
CH1 Rising
CH1 Falling
CH2 Rising
CH2 Falling
-2.5
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
4
6
8
1012
1416
INPUT VOLTAGE (V)
Change in Switching Frequency
vs. Input Voltage
-14
-12.00
-10.00
-8.00
-6.00
-4.00
-2.00
0.00
2.00
4.00
TEMPERATURE (°C)
Change in Switching Frequency
vs. Temperature
V
IN
= 12V
4.0
4.2
4.4
4.6
4.8
5.0
5.2
5.4
TEMPERATURE (°C)
V
DD
vs. Temperature
No Switching
V
IN
= 12V
V
IN
= 5V
3.0
3.5
4.0
4.5
5.0
5.5
0
102030 40 506070
LOAD (mA)
V
DD
vs. Load
No Switching
V
IN
= 12V
V
IN
= 5V
3.0
3.5
4.0
4.5
5.0
5.5
4
6
8
1012
1416
INPUT VOLTAGE (V)
V
DD
vs. Input Voltage
No Switching
0.6960
0.6965
0.6970
0.6975
0.6980
0.6985
0.6990
TEMPERATURE (°C)
Feedback Voltage
vs. Temperature
V
IN
= 12V



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