DRV8801A-Q1_15 Datasheet, PDF (5/24 Pages) Texas Instruments – DRV8801A-Q1 DMOS Full-Bridge Motor Drivers

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DRV8801A-Q1
SLVSC79A – JUNE 2014 – REVISED SEPTEMBER 2014
6.4 Thermal Information
R_θJA
R_θJCtop
R_θJB
ψ_JT
ψ_JB
R_θJCbot
THERMAL METRIC⁽¹⁾
Junction-to-ambient thermal resistance⁽²⁾
Junction-to-case (top) thermal resistance⁽³⁾
Junction-to-board thermal resistance⁽⁴⁾
Junction-to-top characterization parameter⁽⁵⁾
Junction-to-board characterization parameter⁽⁶⁾
Junction-to-case (bottom) thermal resistance⁽⁷⁾
RMJ
16 PINS
36.8
43.4
14.7
0.7
14.7
4.3
UNIT
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2) 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.
(3) The junction-to-case (top) thermal resistance is obtained by simulating a cold plate test on the package top. No specific JEDEC-
standard test exists, but a close description can be found in the ANSI SEMI standard G30-88.
(4) 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.
(5) The junction-to-top characterization parameter, ψ_JT, estimates the junction temperature of a device in a real system and is extracted
from the simulation data for obtaining θ_JA, using a procedure described in JESD51-2a (sections 6 and 7).
(6) The junction-to-board characterization parameter, ψ_JB, estimates the junction temperature of a device in a real system and is extracted
from the simulation data for obtaining θ_JA , using a procedure described in JESD51-2a (sections 6 and 7).
(7) 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.
Spacer
6.5 Dissipation Ratings
PACKAGE
RMJ
R_θJA
36.8
T_A = 25°C
POWER RATING
3W
DERATING FACTOR
ABOVE T_A = 25°C
27 mW/C
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