THERMAL METRIC(1)
|
TPSM560R6 |
UNIT |
RDA (QFN) |
15 PINS |
RθJA
|
Junction-to-ambient thermal resistance (2)
|
Nat Conv |
20.4 |
°C/W |
100 LFM |
18.9 |
°C/W |
200 LFM |
17.6 |
°C/W |
ψJT
|
Junction-to-top characterization parameter (3)
|
3.6 |
°C/W |
ψJB
|
Junction-to-board characterization parameter (4)
|
15.3 |
°C/W |
TSHDN
|
Thermal shutdown temperature |
170 |
°C |
Recovery temperature |
158 |
°C |
(2) The junction-to-ambient thermal resistance, R
θJA, applies
to devices soldered directly to a 6.35-cm × 8.25-cm, four-layer PCB with 2-oz. copper.
Additional airflow and PCB copper area reduces R
θJA. See
Section 10.2.1 for more information.
(3) The junction-to-top board characterization parameter, ψJT, estimates the junction temperature, TJ, of a device in a real system, using a procedure described in JESD51-2A (section 6 and 7). TJ = ψJT × Pdis + TT; where Pdis is the power dissipated in the device and TT is the temperature of the top of the device.
(4) The junction-to-board characterization parameter, ψJB, estimates the junction temperature, TJ, of a device in a real system, using a procedure described in JESD51-2A (sections 6 and 7). TJ = ψJB × Pdis + TB; where Pdis is the power dissipated in the device and TB is the temperature of the board 1mm from the device.