Datasheet

TPS54873
SLVS444A − OCTOBER 2002 − REVISED FEBRUARY 2005
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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
30 mΩ
VIN
REG
VBIAS
VIN
BOOT
VIN
PH
C
O
PGND
PWRGD
Falling
Edge
Deglitch
35 µs
VSENSE
SHUTDOWN
0.90 V
ref
Hysteresis: 0.03 Vref
Powergood
Comparator
AGND
VBIAS
ILIM
Comparator
3 − 6 V
V
O
SYNC
RTCOMPVSENSE
SS/ENA
TPS54873
30 mΩ
L
OUT
Start-Up
Driver
Suppression
ADDITIONAL 6A SWIFT™ DEVICES, (REFER TO SLVS397 AND SLVS400)
DEVICE OUTPUT VOLTAGE DEVICE OUTPUT VOLTAGE DEVICE OUTPUT VOLTAGE
TPS54611 0.9 V TPS54614 1.8 V TPS54672 Active termination
TPS54612 1.2 V TPS54615 2.5 V TPS54610 Adjustable
TPS54613 1.5 V TPS54616 3.3 V TPS54680 Sequencing
RELATED DC/DC PRODUCTS
D TPS54673 − DC/DC Converter (integrated switch)
D TPS40000 − DC/DC Controller
D TPS40002 − DC/DC Controller