TPS54540-Q1 Datasheet, PDF (4/44 Pages) Texas Instruments – 4.5 V to 42 V Input, 5 A, Step Down DC-DC Converter with Eco-mode

TPS54540-Q1
SLVSC56A – SEPTEMBER 2013 – REVISED OCTOBER 2013
www.ti.com
ABSOLUTE MAXIMUM RATINGS⁽¹⁾
over operating free-air temperature range (unless otherwise noted)
VIN
EN
Input voltage
BOOT
FB
COMP
RT/CLK
BOOT-SW
Output voltage
SW
SW, 10-ns Transient
Electrostatic Discharge (HBM) QSS 009-105 (JESD22-A114A) and AEC-Q100
Electrostatic Discharge (CDM) QSS 009-147 (JESD22-C101B.01) and AEC-Q100
Operating junction temperature
Storage temperature
VALUE
MIN
MAX
–0.3
65
–0.3
8.4
73
–0.3
3
–0.3
3
–0.3
3.6
8
–0.6
65
–2
65
2
750
-40
150
-65
150
UNIT
V
V
kV
V
°C
°C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
THERMAL INFORMATION
THERMAL METRIC⁽¹⁾⁽²⁾
TPS54540-Q1
DDA (8 PINS)
UNIT
θ_JA
ψ_JT
ψ_JB
θ_JCtop
θ_JCbot
θ_JB
Junction-to-ambient thermal resistance (standard board)
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case(top) thermal resistance
Junction-to-case(bottom) thermal resistance
Junction-to-board thermal resistance
42
5.9
23.4
°C/W
45.8
3.6
23.4
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2) Power rating at a specific ambient temperature TA should be determined with a junction temperature of 150°C. This is the point where
distortion starts to substantially increase. See power dissipation estimate in application section of this data sheet for more information.
4
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