Datasheet

-40 -20 0 20 40 60 80 100 120
0.50
0.52
0.54
0.57
0.58
0.60
0.62
0.64
0.66
0.68
V
OVP
,V
UVP
(V)
JUNCTION TEMPERATURE (°C)
VUVP
VOVP
-40 -20
0
20 40 60 80 100 120
40
42
44
46
48
50
52
54
56
58
60
SHUTDOWN CURRENT I ( A)
SD
μ
JUNCTION TEMPERATURE (°C)
-40 -20 0 20 40 60 80 100 120
1.28
1.29
1.30
1.31
1.32
1.33
1.34
1.35
1.36
1.37
80
88
96
104
112
120
128
136
144
152
160
V
IHENR
(V)
JUNCTION TEMPERATURE (°C)
V
ENHYS
(V)
V IHENR
V ENHYS
-40 -20 0 20 40 60 80 100 120
2.60
2.62
2.64
2.66
2.68
2.70
2.72
2.74
2.76
2.78
2.80
150
165
180
195
210
225
240
255
270
285
300
V
UVLO
(V)
JUNCTION TEMPERATURE (°C)
V
UVLOHYS
(mV)
V UVLO
V UVLOHYS
-40 -20 0 20 40 60 80 100 120
0.90
0.93
0.96
0.99
1.02
1.05
1.08
1.11
1.14
1.17
1.20
0.100
0.108
0.116
0.124
0.132
0.140
0.148
0.156
0.164
0.172
0.180
I
AVIN
(mA)
JUNCTION TEMPERATURE (°C)
I
PVIN
(mA)
IAVIN
IPVIN
-40 -20 0 20 40 60 80 100 120
0.598
0.599
0.600
0.601
0.602
V
FB
(V)
JUNCTION TEMPERATURE (°C)
LM21215A
www.ti.com SNOSB87B –MARCH 2011–REVISED MARCH 2013
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Unless otherwise specified: V
VIN
= 5V, V
OUT
= 1.2V, L= 0.56µH (1.8mΩ R
DCR
), C
SS
= 33nF, f
SW
= 500 kHz, T
A
= 25°C for
efficiency curves, loop gain plots and waveforms, and T
J
= 25°C for all others.
Non-Switching I
AVIN
and I
PVIN
vs. Temperature V
FB
vs. Temperature
Figure 8. Figure 9.
Enable Threshold and Hysteresis vs. Temperature UVLO Threshold and Hysteresis vs. Temperature
Figure 10. Figure 11.
Enable Low Current vs. Temperature OVP/UVP Threshold vs. Temperature
Figure 12. Figure 13.
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