lm21215mhx National Semiconductor Corporation, lm21215mhx Datasheet - Page 7

• Manufacturer Part Number: lm21215mhx
• Description: 15a High Efficiency Synchronous Buck Regulator
• Manufacturer: National Semiconductor Corporation

Peak Current Limit (I
8.0
7.8
7.6
7.4
7.2
7.0
6.8
6.6
10
22
21
20
19
18
17
16
15
14
FET Resistance vs. Temperature
9
8
7
6
5
4
3
2
Peak Current Limit (I
-40 -20
3.0
-40 -20
JUNCTION TEMPERATURE (°C)
JUNCTION TEMPERATURE (°C)
LOW SIDE
HIGH SIDE
RILIM = 24.9kΩ
RILIM = 16.5kΩ
VIN = 3.3V
VIN = 5.5V
3.5
R
ILIM
0
0
= 61.9 kΩ
20
20
4.0
CLR
V IN (V)
40
) vs. Temperature
40
CLR
4.5
60
60
) vs. V
80 100 120
80 100 120
5.0
IN
5.5
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30103787
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Peak Current Limit (I
23.0
22.5
22.0
21.5
21.0
20.5
20.0
19.5
19.0
12
11
10
9
8
7
6
5
4
Peak Current Limit (I
3.0
-40 -20
Load Transient Response
JUNCTION TEMPERATURE (°C)
RILIM = 41.2kΩ
RILIM = 74.9kΩ
VIN = 3.3V
VIN = 5.5V
3.5
R
0
100 µs/DIV
ILIM
20
= 10 kΩ
4.0
CLR
V IN (V)
40
) vs. Temperature
CLR
4.5
60
) vs. V
80 100 120
5.0
IN
30103761
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5.5
30103786
30103785