Datasheet

TPS54519
SLVSAT3A –SEPTEMBER 2011–REVISED DECEMBER 2013 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
T
J
= –40°C to 140°C, VIN = 2.95 to 6 V (unless otherwise noted)
DESCRIPTION CONDITIONS MIN TYP MAX UNIT
BOOT (BOOT PIN)
BOOT Charge Resistance VIN = 5 V 15 Ω
BOOT-PH UVLO VIN = 2.95 V 2.1 2.75 V
SLOW START / TRACKING (SS/TR PIN)
Charge Current V(SS) = 0.3 V 2.4 μA
SS/TR to VSENSE matching V
SSTR
= 0.3 V 73 115 mV
SS to reference crossover 98% nominal 0.87 V
SS discharge voltage (overload) VSENSE = 0 V 80 μA
SS discharge current (UVLO, EN, Thermal VIN = 5 V, V(SS) = 0.5 V 1.2 mA
Fault)
POWER GOOD (PWRGD PIN)
VSENSE rising (Good) 93 % Vref
VSENSE threshold
VSENSE rising (Fault) 110 % Vref
Hysteresis VSENSE falling 2 % Vref
Output high leakage VSENSE = VREF, V(PWRGD) = 5.5 V 100 nA
On resistance 78 Ω
Output low I(PWRGD) = 3.5 mA 0.5 V
Minimum VIN for valid output V(PWRGD) < 0.5 V at 100 μA 0.8 V
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