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MIC4682 Datasheet(PDF) 6 Page - Micrel Semiconductor

Part # MIC4682
Description  PRECISION CURRENT LIMIT SO-8 SUPERSWITCHER BUCK REGULATOR
PDF  15 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC4682 Datasheet(HTML) 6 Page - Micrel Semiconductor

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MIC4682
Micrel
October 2003
6
M0334-102203
210
215
220
225
230
235
240
245
250
-40 -20 0
20 40 60 80 100 120
TEMPERATURE (
°C)
Frequency
vs. Temperature
V
FB = 0V
V
IN = 24V
V
IN = 12V
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
Saturation Voltage
vs. Input Voltage
V
OUT = 5V
I
OUT = 100mA
4.95
4.96
4.97
4.98
4.99
5
5.01
5.02
0
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
Line Regulation
I
OUT = 1A
5.002
5.004
5.006
5.008
5.01
5.012
5.014
5.016
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
OUTPUT CURRENT (A)
Load Regulation
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
T
J (°C)
Thermal Shutdown Hysteresis
Upper Threshold
Lower Threshold
0
2
4
6
8
10
12
0
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
Quiescent Current
vs. Input Voltage
V
FB = 1.5V
V
EN = 0V
0
2
4
6
8
10
12
-40 -20 0
20 40 60 80 100 120
TEMPERATURE (
°C)
Quiescent Current
vs. Temperature
V
FB = 1.5V
V
EN = 0V
V
IN = 12V
V
IN = 24V
0
20
40
60
80
100
120
140
0
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
Shutdown Current
vs. Input Voltage
V
FB = 1.5V
V
EN =VIN
1.22
1.225
1.23
1.235
1.24
1.245
1.25
1.255
0
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
Feedback Voltage vs.
Input Voltage & Temperature
V
OUT = 5V
I
OUT = 100mA
–40
°C
125
°C
25
°C
0
0.5
1
1.5
2
2.5
-40 -20 0
20 40 60 80 100 120
TEMPERATURE (
°C)
Shutdown Current
vs. Temperature
V
FB = 1.5V
V
EN =VIN
V
IN = 12V
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
4
8
12
16
20
24
28
32
INPUT VOLTAGE (V)
Short Circuit Current Limit
vs. Input Voltage at T
J
= 85
°C
L = 68
µH
R3 = 10M
V
OUT~0V (Pulsed Load)
R
ISET=20k
R
ISET=25k
R
ISET=30k
R
ISET=40k
R
ISET=50k
R
ISET=10k
R
ISET=15.8k
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
4
8
12
16
20
24
28
32
INPUT VOLTAGE (V)
Short Circuit Current Limit
vs. Input Voltage at T
J
= 125
°C
L = 68
µH
R3 = 10M
V
OUT~0V (Pulsed Load)
R
ISET=20k
R
ISET=25k
R
ISET=30k
R
ISET=40k
R
ISET=50k
R
ISET=10k
15.8k



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