Datasheet

TPS40170
SLUS970A –MARCH 2011–REVISED NOVEMBER 2013 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Unless otherwise stated, these specifications apply for -40ºC ≤ T
J
≤ 125ºC, V
VIN
=12 V
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
THERMAL SHUTDOWN
T
SD,set
(3)
Thermal shutdown set threshold 155 165 175 °C
T
SD,reset
(3)
Thermal shutdown reset threshold 4.5 V < V
VIN
< 60 V 125 135 145 °C
T
hyst
(3)
Thermal shutdown hysteresis 30 °C
POWER GOOD
V
OV
FB pin voltage upper limit for power good 627 647 670
V
UV
FB pin voltage lower limit for power good 527 552 570 mV
4.5 V < V
VIN
< 60 V
V
PG,HYST
Power good hysteresis voltage at FB pin 8.5 20.0 32.0
PGOOD pin voltage when FB pin voltage >
V
PG(out)
100 mV
V
OV
or < V
UV
, I
PGD
=2 mA
PGOOD pin voltage when device power is
V
PG(np)
V
VIN
is open, 10-kΩ to V
EXT
= 5 V 1 1.5 V
removed
BOOT DIODE
V
DFWD
Bootstrap diode forward voltage I = 20 mA 0.5 0.7 0.9 V
R
BOOT-SW
Discharge resistor from BOOT to SW 1 MΩ
(3) Specified by design. Not production tested.
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