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LM5145 Datasheet(PDF) 7 Page - Texas Instruments

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Part # LM5145
Description  LM5146 100-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range
PDF  55 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
100
V
SW
–1
100
V
ILIM
0
100
V
External VCC bias rail
8
13
V
EN/UVLO
–0.3
100
V
Output
voltage
BST
–0.3
110
V
BST to VCC
100
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)
Recommended Operation Conditions are conditions under which the device is intended to be functional. For specifications and test
conditions, see Electrical Characteristics.
7.4 Thermal Information
THERMAL METRIC(1)
LM5146
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
LM5146
SNVSBV0A – JUNE 2021 – REVISED JUNE 2021
Copyright © 2021 Texas Instruments Incorporated
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Product Folder Links: LM5146



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