mic4682 Micrel Semiconductor, mic4682 Datasheet - Page 6

• Manufacturer Part Number: mic4682
• Description: Mic4682 Precision Current Limit So-8 Superswitcher? Buck Regulator
• Manufacturer: Micrel Semiconductor

Typical Characteristics (continued)
Micrel, Inc.
June 2007
1.8
1.6
1.4
1.2
0.8
0.6
0.4
0.2
12
10
2
1
0
vs. Input Voltageat T
8
6
4
2
0
-40 -20 0 20 40 60 80 100120
4
Short Circuit Current Limit
R
R
ISET
ISET
8
Quiescent Current
TEMPERATURE ( °C)
INPUT VOLTAGE (V)
=10k
=15.8k
vs. Temperature
12 16 20 24 28 32
L = 68µH
R3 = 10M
V
OUT
~0V (Pulsed Load)
V
V
V = 24V
V = 12V
R
R
R
R
R
FB
EN
ISET
ISET
ISET
ISET
ISET
J
= 1.5V
= 0V
= 85°C
=20k
=25k
=30k
=40k
=50k
5.016
5.014
5.012
5.008
5.006
5.004
5.002
5.01
250
245
240
235
230
225
220
215
210
140
120
100
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
80
60
40
20
vs. Input Voltageat T
-40 -20 0 20 40 60 80 100120
0
0
4
0
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
Short Circuit Current Limit
R
V
V
ISET
15.8k
FB
EN
5 10 15 20 25 30 35 40
8
OUTPUT CURRENT (A)
TEMPERATURE ( °C)
Shutdown Current
=10k
= 1.5V
= V
V
INPUT VOLTAGE (V)
vs. Input Voltage
INPUT VOLTAGE (V)
vs. Temperature
Load Regulation
IN
12 16 20 24 28 32
L = 68µH
R3 = 10M
V
IN
Frequency
= 12V
OUT
~0V (Pulsed Load)
V
IN
6
= 24V
R
R
R
R
R
V
J
ISET
ISET
ISET
ISET
ISET
FB
= 125°C
= 0V
=20k
=25k
=30k
=40k
=50k
12
10
8
6
4
2
0
0
5 10 15 20 25 30 35 40
Quiescent Current
vs. Input Voltage
INPUT VOLTAGE (V)
V
V
M9999-061507
FB
EN
= 1.5V
= 0V
MIC4682