lm21215mhx National Semiconductor Corporation, lm21215mhx Datasheet - Page 6

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

www.national.com
UVLO Threshold and Hysteresis vs. Temperature
2.80
2.78
2.76
2.74
2.72
2.70
2.68
2.66
2.64
2.62
2.60
0.602
0.601
0.600
0.599
0.598
OVP/UVP Threshold vs. Temperature
0.68
0.66
0.64
0.62
0.60
0.58
0.57
0.54
0.52
0.50
-40 -20
-40 -20
JUNCTION TEMPERATURE (°C)
-40 -20
JUNCTION TEMPERATURE (°C)
JUNCTION TEMPERATURE (°C)
V UVLO
V UVLOHYS
V
FB
VUVP
VOVP
0
vs. Temperature
0
0
20 40 60 80 100 120
20 40 60 80 100 120
20
40
60
80 100 120
300
285
270
255
240
225
210
195
180
165
150
30103776
30103774
30103770
6
Enable Threshold and Hysteresis vs. Temperature
1.37
1.36
1.35
1.34
1.33
1.32
1.31
1.30
1.29
1.28
Enable Low Current vs. Temperature
Minimum On-Time vs. Temperature
160
156
152
148
144
140
136
132
128
124
120
60
58
56
54
52
50
48
46
44
42
40
-40 -20 0
JUNCTION TEMPERATURE (°C)
-40 -20
-40 -20
JUNCTION TEMPERATURE (°C)
JUNCTION TEMPERATURE (°C)
V IHENR
V ENHYS
0
0
20 40 60 80 100 120
20
20
40
40
60
60
80 100 120
80 100 120
160
152
144
136
128
120
112
104
96
88
80
30103773
30103772
30103771