Datasheet

-40 -20 0 20 40 60 80 100 120
6.6
6.8
7.0
7.2
7.4
7.6
7.8
8.0
CURRENT LIMIT (A)
JUNCTION TEMPERATURE (°C)
VIN = 3.3V
VIN = 5.5V
V
OUT
(50 mV/Div)
I
OUT
(10A/Div)
3.0 3.5 4.0 4.5 5.0 5.5
14
15
16
17
18
19
20
21
22
I
CLR
(A)
V
IN
(V)
RILIM = 24.9k
RILIM = 16.5k
-40 -20 0 20 40 60 80 100 120
19.0
19.5
20.0
20.5
21.0
21.5
22.0
22.5
23.0
CURRENT LIMIT (A)
JUNCTION TEMPERATURE (°C)
VIN = 3.3V
VIN = 5.5V
-40 -20 0 20 40 60 80 100 120
2
3
4
5
6
7
8
9
10
R
DSON
(m)
JUNCTION TEMPERATURE (°C)
LOW SIDE
HIGH SIDE
3.0 3.5 4.0 4.5 5.0 5.5
4
5
6
7
8
9
10
11
12
I
CLR
(A)
V
IN
(V)
RILIM = 41.2k
RILIM = 74.9k
LM21215
SNVS625E –FEBRUARY 2011–REVISED MARCH 2013 www.ti.com
Typical Performance Characteristics (continued)
Unless otherwise specified: V
IN
= 5V, V
OUT
= 1.2V, L= 0.56µH (1.8mΩ R
DCR
), C
SS
= 33nF, T
A
= 25°C for efficiency curves,
loop gain plots and waveforms, and T
J
= 25°C for all others.
FET Resistance vs. Temperature Peak Current Limit (I
CLR
) vs. V
IN
Figure 14. Figure 15.
Peak Current Limit (I
CLR
) vs. Temperature
Peak Current Limit (I
CLR
) vs. V
IN
R
ILIM
= 10 kΩ
Figure 16. Figure 17.
Peak Current Limit (I
CLR
) vs. Temperature
R
ILIM
= 61.9 kΩ Load Transient Response
100 µs/DIV
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