Datasheet

TPS54525
SLVSB82A –MAY 2012–REVISED JULY 2013 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, V
IN
= 12V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
CURRENT LIMIT
I
ocl
Current limit L
OUT
= 1.5 μH
(2)
6.1 6.9 8.4 A
THERMAL SHUTDOWN
Shutdown temperature
(2)
165
T
SDN
Thermal shutdown threshold °C
Hysteresis
(2)
35
ON-TIME TIMER CONTROL
T
ON
On time V
IN
= 12 V, V
O
= 1.05 V 155 ns
T
OFF(MIN)
Minimum off time T
A
= 25°C, V
VFB
= 0.7 V 260 330 ns
SOFT START
I
SSC
SS charge current V
SS
= 1 V 4.2 6.0 7.8 μA
I
SSD
SS discharge current V
SS
= 0.5 V 0.1 0.2 mA
POWER GOOD
V
VFB
rising (good) 85 90 95 %
V
THPG
PG threshold
V
VFB
falling (fault) 85 %
I
PG
PG sink current V
PG
= 0.5 V 2.5 5 mA
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
V
OVP
Output OVP trip threshold OVP detect 120 125 130 %
T
OVPDEL
Output OVP prop delay 10 μs
UVP detect 60 65 70 %
V
UVP
Output UVP trip threshold
Hysteresis 10 %
T
UVPDEL
Output UVP delay 0.25 ms
T
UVPEN
Output UVP enable delay Relative to soft-start time x 1.7
UVLO
Wake up VREG5 voltage 3.31 3.61 3.91
V
UVLO
UVLO threshold Fall VREG5 voltage 2.82 3.12 3.42 V
Hysteresis VREG5 voltage 0.37 0.49 0.61
(2) Not production tested.
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