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TPS65252 Datasheet(PDF) 8 Page - Texas Instruments

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Part # TPS65252
Description  4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN DUAL BUCK SWITCHER WITH INTEGRATED FET AND ONE USB SWITCH AND SVS
PDF  29 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS65252 Datasheet(HTML) 8 Page - Texas Instruments

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TPS65252
SLVSAM1B
– DECEMBER 2010 – REVISED FEBRUARY 2011
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
TJ = -40°C to 85°C, VIN = 12 V, fSW = 1 MHz (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWER GOOD RESET GENERATOR
Output falling (device will be
85
disabled after tON_HICCUP )
Threshold voltage for buck under
VUVBUCKX
%
voltage
Output rising (PG will be
90
asserted)
tUV_deglitch
Deglitch time (both edges)
11
ms
tON_HICCUP
Hiccup mode ON time
VUVBUCKX asserted
12
ms
All converters disabled. Once
Hiccup mode OFF time before
tOFF_HICCUP elapses, all
tOFF_HICCUP
20
ms
re-start is attempted
converters will go through
sequencing again.
Output rising (high side fet will
109
be forced off)
Threshold voltage for buck over
VOVBUCKX
%
voltage
Output falling (high side fet will
107
be allowed to switch )
Measured after minimum reset
tRP
Minimum reset period
period of all bucks power-up
256
ms
successfully
Pulled to 3V3 with 100-k
Ω
PGOODLO
Power good low level
0.3
V
resistors
THERMAL SHUTDOWN
TTRIP
Thermal shut down trip point
Rising temperature
160
°C
THYST
Thermal shut down hysteresis
Device re-starts
20
°C
TTRIP_DEGLITCH
Thermal shut down deglitch
100
120
µs
8
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© 2010–2011, Texas Instruments Incorporated
Product Folder Link(s): TPS65252



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