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LM3485Q1MM Arkusz danych(PDF) 4 Page - Texas Instruments

Numer części LM3485Q1MM
Szczegółowy opis  Hysteretic PFET Buck Controller
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LM3485
SNVS178H – JANUARY 2002 – REVISED DECEMBER 2015
www.ti.com
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
(1)
MIN
TYP
MAX
UNIT
PGATE voltage
−0.3
36
V
FB voltage
−0.3
5
V
ISENSE voltage
−1.0
36
V
ADJ voltage
−0.3
36
V
Maximum junction temperature
150
°C
Power dissipation (at TA = 25°C)
417
mW
Lead temperature
Vapor phase (60 sec.)
215
°C
Infrared (15 sec.)
220
°C
Storage temperature, Tstg
−65
160
°C
(1)
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions . Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
6.2 ESD Ratings
VALUE
UNIT
V(ESD)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)
±2000
V
(1)
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
MIN
NOM
MAX
UNIT
Supply voltage
4.5
35
V
TJ
Operating junction temperature
−40
125
°C
6.4 Thermal Information
LM3485
THERMAL METRIC(1)
DGK (VSSOP)
UNIT
8 PINS
RθJA
Junction-to-ambient thermal resistance
163.3
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
56.7
°C/W
RθJB
Junction-to-board thermal resistance
83.2
°C/W
ψJT
Junction-to-top characterization parameter
5.9
°C/W
ψJB
Junction-to-board characterization parameter
81.9
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
N/A
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
4
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Copyright © 2002–2015, Texas Instruments Incorporated
Product Folder Links: LM3485


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