TPS56528
SLVSBV3A –APRIL 2013–REVISED APRIL 2013
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ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, VIN = 12 V (unless otherwise noted)
PARAMETER
THERMAL SHUTDOWN
TEST CONDITIONS
MIN
TYP
MAX
UNIT
(2)
Shutdown temperature
165
35
TSDN
Thermal shutdown threshold
°C
(2)
Hysteresis
ON-TIME TIMER CONTROL
tON
On time
VIN = 12 V, VO = 1.05 V
TA = 25°C, VFB = 0.5 V
150
260
ns
ns
tOFF(MIN)
Minimum off time
310
1.3
SOFT START
tSS
Soft-start time
Internal soft-start time
0.7
85%
2
1.0
ms
POWER GOOD
VFB rising(good)
VFB falling(Fault)
PG=0.5V
90%
85%
4
95%
VTHPG
IPG
PG threshold
PG sink current
mA
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VOVP
Output OVP threshold
Output UVP threshold
Output UVP delay
OVP Detect (L>H)
UVP detect (H>L)
to Hiccup state
125%
65%
7
VUVP
tUVPDEL
tUVPEN
UVLO
µs
V
Output UVP Enable delay
Relative to soft-start time
x1.7
Wake up VREG5 voltage
Hysteresis VREG5 voltage
3.45
0.13
3.75
0.32
4.05
0.48
UVLO
UVLO threshold
(2) Not production tested.
4
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