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TPS54373 Datasheet(PDF) 6 Page - Texas Instruments

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Part # TPS54373
Description  3-V TO 6-V INPUT,3-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS54373 Datasheet(HTML) 6 Page - Texas Instruments

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TPS54373
SLVS455A − JANUARY 2003 − REVISED JUNE 2003
www.ti.com
6
INTERNAL BLOCK DIAGRAM
Falling
Edge
Deglitch
Enable
Comparator
1.2 V
VIN
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
Internal/External
Slow-start
(Internal Slow-Start Time = 3.35 ms)
Reference
VREF = 0.891 V
−
+
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
60 m
Ω
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
VO
SYNC
RT
COMP
VSENSE
SS/ENA
TPS54373
60 m
Ω
LOUT
Start-Up
Driver
Suppression


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