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TPS54495 Fiches technique(PDF) 4 Page - Texas Instruments

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No de pièce TPS54495
Description  4A/2A Dual Channel Synchronous Step-Down Switcher with Integrated FET
Download  23 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54495 Fiches technique(HTML) 4 Page - Texas Instruments

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TPS54495
SLVSBH0A – JUNE 2012 – REVISED MAY 2013
www.ti.com
ELECTRICAL CHARACTERISTICS
(1) (continued)
over recommended free-air temperature range, VIN = 12 V (unless otherwise noted)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
UVLO
VREG5 rising
3.83
VUVREG5
VREG5 UVLO threshold
V
Hysteresis
0.6
LOGIC THRESHOLDs
VENxH
ENx H-level threshold voltage
2.0
V
VENxL
ENx L-level threshold voltage
0.4
V
RENx_IN
ENx input resistance
ENx = 12V
225
450
900
k
Ω
CURRENT LIMITs
IOCL1
CH1 Current limit
LOUT1 = 2.2 µH
(3)
4.5
5.7
7.0
A
IOCL2
CH1 Current limit
LOUT2 = 1.5 µH
(3)
2.8
3.9
5.0
A
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION (UVP, OVP)
VUVP
Output UVP trip threshold
measured on VFBx
63%
68%
73%
TUVPDEL
Output UVP delay time
1.5
ms
TUVPEN
Output UVP enable delay
UVP enable delay / softstart time
x 1.4
x 1.7
x 2.0
THERMAL SHUTDOWN
Shutdown temperature(3)
155
TSD
Thermal shutdown threshold
°C
Hysteresis(3)
25
(3)
Specified by design. Not production tested.
4
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Product Folder Links: TPS54495


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