LM3424 Datasheet, PDF (9/69 Pages) National Semiconductor (TI) – Constant Current N-Channel Controller with Thermal Foldback for Driving LEDs

www.ti.com
LM3424, LM3424-Q1
SNVS603C – AUGUST 2009 – REVISED AUGUST 2015
Typical Characteristics (continued)
T_A=25°C and V_IN = 14 V unless otherwise specified. The measurements for Figure 1, Figure 3, andFigure 6 were made using
the standard boost evaluation board from AN-1969 (SNVA397). The measurements for Figure 2, Figure 4, and Figure 5 were
made using the standard buck-boost evaluation board from AN-1967 (SNVA398).
1.250
7.20
1.245
7.10
1.240
7.00
1.235
6.90
1.230
6.80
1.225
1.220
-50 -14
22
58
94 130
TEMPERATURE (°C)
6.70
-50 -14
22
58
94 130
TEMPERATURE (°C)
Figure 7. V_CSH vs. Junction Temperature
2.500
Figure 8. V_CC vs. Junction Temperature
248
246
2.450
244
242
2.400
-50
-14
22
58
94 130
TEMPERATURE (°C)
240
-50
-14
22
58
94 130
TEMPERATURE (°C)
Figure 9. V_S vs. Junction Temperature
255
250
245
240
235
230
225
-50 -14
22
58
94 130
TEMPERATURE (°C)
Figure 10. V_LIM vs. Junction Temperature
1000
R_T = 12 kÖ
R_T = 36 kÖ
100
-50 -14
22
58
94 130
TEMPERATURE (°C)
Figure 11. Minimum On-Time vs. Junction Temperature
Figure 12. Switching Frequency vs. Junction Temperature
Copyright © 2009–2015, Texas Instruments Incorporated
Submit Documentation Feedback
9
Product Folder Links: LM3424 LM3424-Q1