MIC2171 Micrel Semiconductor, MIC2171 Datasheet - Page 4

• Manufacturer Part Number: MIC2171
• Description: 100kHz 2.5A Switching Regulator Preliminary Information
• Manufacturer: Micrel Semiconductor

MIC2171
Typical Performance Characteristics
2.9
2.8
2.7
2.6
2.5
2.4
2.3
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
15
14
13
12
11
10
-100
-100
9
8
7
6
5
0
0
0
T J = –40 C
Switch Current = 2A
V
Error Amplifier Gain
-50
-50
Switch On-Voltage
Operating Voltage
IN
D.C. = 50%
Supply Current
D.C. = 90%
10
Switch Current (A)
Temperature ( C)
D.C. = 0%
Temperature ( C)
Operating Voltage (V)
T J = 25 C
1
Minimum
0
0
20
50
50
T J = 125 C
2
I SW = 0
30
100
100
150
150
40
3
800
700
600
500
400
300
200
100
120
110
100
7000
6000
5000
4000
3000
2000
1000
90
80
70
60
50
40
30
20
10
-100
0
0
-50
0
0
1
Feedback Bias Current
Oscillator Frequency
-50
Error Amplifier Gain
Supply Current
Switch Current (A)
Temperature ( C)
1
0
Temperature ( C)
10
Frequency (kHz)
= 90%
0
4-6
50
2
100
50
= 50%
100
1000
3
100
150
150
10000
4
120
150
180
210
-30
10
30
60
90
-1
-2
-3
-4
-5
-100
9
8
7
6
5
4
3
2
1
0
0
5
4
3
2
1
0
1
0
8
6
4
2
0
0
V
Error Amplifier Phase
COMP
–40 C
-50
Feedback Voltage
Line Regulation
10
20
10
Supply Current
T J = -40 C
Temperature ( C)
V
= 0.6V
Frequency (kHz)
IN
Current Limit
125 C
Duty Cycle (%)
Operating (V)
0
40
25 C
100
20
T J = 125 C
50
60
T J = 25 C
1000
30
100
80
10000
150
40
100
Micrel
1997