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TPS73619DRBT Fiches technique(PDF) 3 Page - Texas Instruments

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No de pièce TPS73619DRBT
Description  400mA Low-Dropout Regulator for C2000?
Download  20 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS73619DRBT Fiches technique(HTML) 3 Page - Texas Instruments

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TPS73619
www.ti.com
SBVS167
– JUNE 2011
THERMAL INFORMATION
TPS73619(3)
THERMAL METRIC(1)(2)
DRB
UNITS
8 PINS
θJA
Junction-to-ambient thermal resistance(4)
47.8
θJCtop
Junction-to-case (top) thermal resistance(5)
83
θJB
Junction-to-board thermal resistance(6)
N/A
°C/W
ψJT
Junction-to-top characterization parameter(7)
2.1
ψJB
Junction-to-board characterization parameter(8)
17.8
θJCbot
Junction-to-case (bottom) thermal resistance(9)
12.1
(1)
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953A.
(2)
For thermal estimates of this device based on PCB copper area, see the TI PCB Thermal Calculator.
(3)
Thermal data for the DRB, DCQ, and DRV packages are derived by thermal simulations based on JEDEC-standard methodology as
specified in the JESD51 series. The following assumptions are used in the simulations:
(a) The exposed pad is connected to the PCB ground layer through a 2x2 thermal via array.
(b) The top and bottom copper layers are assumed to have a 20% thermal conductivity of copper representing a 20% copper coverage.
(c) These data were generated with only a single device at the center of a JEDEC high-K (2s2p) board with 3in
× 3in copper area. To
understand the effects of the copper area on thermal performance, see the Power Dissipation section of this data sheet.
(4)
The junction-to-ambient thermal resistance under natural convection is obtained in a simulation on a JEDEC-standard, high-K board, as
specified in JESD51-7, in an environment described in JESD51-2a.
(5)
The junction-to-case (top) thermal resistance is obtained by simulating a cold plate test on the top of the package. No specific
JEDEC-standard test exists, but a close description can be found in the ANSI SEMI standard G30-88.
(6)
The junction-to-board thermal resistance is obtained by simulating in an environment with a ring cold plate fixture to control the PCB
temperature, as described in JESD51-8.
(7)
The junction-to-top characterization parameter,
ψJT, estimates the junction temperature of a device in a real system and is extracted
from the simulation data to obtain
θJA using a procedure described in JESD51-2a (sections 6 and 7).
(8)
The junction-to-board characterization parameter,
ψJB, estimates the junction temperature of a device in a real system and is extracted
from the simulation data to obtain
θJA using a procedure described in JESD51-2a (sections 6 and 7).
(9)
The junction-to-case (bottom) thermal resistance is obtained by simulating a cold plate test on the exposed (power) pad. No specific
JEDEC standard test exists, but a close description can be found in the ANSI SEMI standard G30-88.
Copyright
© 2011, Texas Instruments Incorporated
3


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