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LM5145 Datasheet(PDF) 7 Page - Texas Instruments

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Part # LM5145
Description  LM5145-Q1 Automotive 75-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range
PDF  62 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM5145 Datasheet(HTML) 7 Page - Texas Instruments

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7.3 Recommended Operating Conditions
Over the recommended operating junction temperature range of –40
℃ to 150℃ (unless otherwise noted). (1)
MIN
NOM
MAX
UNIT
Input voltage
VIN
5.5
75
V
SW
–1
75
V
ILIM
0
75
V
External VCC bias rail
8
13
V
EN/UVLO
–0.3
75
V
Output
voltage
BST
–0.3
88
V
BST to VCC
75
V
BST to SW
5
13
V
PGOOD
13
V
ISINK, ISRC
Sink/source current SYNCOUT
–1
1
mA
ISINK, ISRC
Sink/source current PGOOD
2
mA
TJ
Operating junction temperature
–40
150
°C
(1)
The Recommended Operating Conditions are conditions under which the device is intended to be functional. For specifications and
test conditions, see the Electrical Characteristics.
7.4 Thermal Information
THERMAL METRIC(1)
LM5145-Q1
UNIT
RGY (VQFN)
20 PINS
RθJA
Junction-to-ambient thermal resistance
36.8
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
28
°C/W
RθJB
Junction-to-board thermal resistance
11.8
°C/W
ψJT
Junction-to-top characterization parameter
0.4
°C/W
ψJB
Junction-to-board characterization parameter
11.7
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
2.1
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics
www.ti.com
LM5145-Q1
SNVSBU9 – JUNE 2021
Copyright © 2021 Texas Instruments Incorporated
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Product Folder Links: LM5145-Q1



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