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NSI45020AT1G_14 Datasheet, PDF (3/8 Pages) ON Semiconductor – Constant Current Regulator & LED Driver | |||
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NSI45020AT1G
THERMAL CHARACTERISTICS
Characteristic
Symbol
Max
Unit
Total Device Dissipation (Note 5) TA = 25°C
Derate above 25°C
PD
208
mW
1.66
mW/°C
Thermal Resistance, JunctionâtoâAmbient (Note 5)
Thermal Reference, LeadâtoâAmbient (Note 5)
Thermal Reference, JunctionâtoâCathode Lead (Note 5)
Total Device Dissipation (Note 6) TA = 25°C
Derate above 25°C
RθJA
RÏLA
RÏJL
PD
600
°C/W
404
°C/W
196
°C/W
227
mW
1.8
mW/°C
Thermal Resistance, JunctionâtoâAmbient (Note 6)
Thermal Reference, LeadâtoâAmbient (Note 6)
Thermal Reference, JunctionâtoâCathode Lead (Note 6)
Total Device Dissipation (Note 7) TA = 25°C
Derate above 25°C
RθJA
RÏLA
RÏJL
PD
550
°C/W
390
°C/W
160
°C/W
347
mW
2.8
mW/°C
Thermal Resistance, JunctionâtoâAmbient (Note 7)
Thermal Reference, LeadâtoâAmbient (Note 7)
Thermal Reference, JunctionâtoâCathode Lead (Note 7)
Total Device Dissipation (Note 8) TA = 25°C
Derate above 25°C
RθJA
RÏLA
RÏJL
PD
360
°C/W
200
°C/W
160
°C/W
368
mW
2.9
mW/°C
Thermal Resistance, JunctionâtoâAmbient (Note 8)
Thermal Reference, LeadâtoâAmbient (Note 8)
Thermal Reference, JunctionâtoâCathode Lead (Note 8)
Total Device Dissipation (Note 9) TA = 25°C
Derate above 25°C
RθJA
RÏLA
RÏJL
PD
340
°C/W
208
°C/W
132
°C/W
436
mW
3.5
mW/°C
Thermal Resistance, JunctionâtoâAmbient (Note 9)
Thermal Reference, LeadâtoâAmbient (Note 9)
Thermal Reference, JunctionâtoâCathode Lead (Note 9)
Total Device Dissipation (Note 10) TA = 25°C
Derate above 25°C
RθJA
RÏLA
RÏJL
PD
287
°C/W
139
°C/W
148
°C/W
463
mW
3.7
mW/°C
Thermal Resistance, JunctionâtoâAmbient (Note 10)
RθJA
270
°C/W
Thermal Reference, LeadâtoâAmbient (Note 10)
RÏLA
150
°C/W
Thermal Reference, JunctionâtoâCathode Lead (Note 10)
RÏJL
120
°C/W
Junction and Storage Temperature Range
TJ, Tstg
â55 to +150
°C
5. FRâ4 @ 100 mm2, 1 oz. copper traces, still air.
6. FRâ4 @ 100 mm2, 2 oz. copper traces, still air.
7. FRâ4 @ 300 mm2, 1 oz. copper traces, still air.
8. FRâ4 @ 300 mm2, 2 oz. copper traces, still air.
9. FRâ4 @ 500 mm2, 1 oz. copper traces, still air.
10. FRâ4 @ 500 mm2, 2 oz. copper traces, still air.
NOTE: Lead measurements are made by nonâcontact methods such as IR with treated surface to increase emissivity to 0.9.
Lead temperature measurement by attaching a T/C may yield values as high as 30% higher °C/W values based upon empirical
measurements and method of attachment.
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