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TPS54980 Datasheet(PDF) 6 Page - Texas Instruments

No. de pieza TPS54980
Descripción Electrónicos  3-V TO 4-V INPUT,9-A OUTPUT TRACKING SYNCHRONOUS BUCK PWM SWITCHER WITH INTERRATED FETs(SWIFT)FOR SEQUENCING
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS54980 Datasheet(HTML) 6 Page - Texas Instruments

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TPS54980
SLVS452A − FEBRUARY 2003 − REVISED FEBRUARY 2005
www.ti.com
6
INTERNAL BLOCK DIAGRAM
Falling
Edge
Deglitch
Enable
Comparator
1.2 V
2.95 V
Hysteresis: 0.03 V
2.5
µs
Falling
and
Rising
Edge
Deglitch
2.5
µs
VIN UVLO
Comparator
Hysteresis: 0.16 V
Multiplexer
Reference
+
Error
Amplifier
Thermal
Shutdown
150
°C
SHUTDOWN
SS_DIS
PWM
Comparator
OSC
Leading
Edge
Blanking
100 ns
RQ
S
Adaptive Dead-Time
and
Control Logic
SHUTDOWN
15 m
VIN
REG
VBIAS
VIN
BOOT
VIN
PH
CO
PGND
PWRGD
Falling
Edge
Deglitch
35
µs
VSENSE
SHUTDOWN
0.90 Vref
Hysteresis: 0.03 Vref
Powergood
Comparator
AGND
VBIAS
ILIM
Comparator
Core
RT
COMP
VSENSE
ENA
TPS54980
15 m
LOUT
TRACKIN
25 ns Adaptive
Dead Time
Sense
FET
VIN
I/O


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