TPS54719RTET datasheet(4/36 Pages) TI1

Part #	TPS54719RTET

Description	2.95 V to 6 V Input, 7-A Synchronous Step Down SWIFT??Converter

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Manufacturer	TI1 [Texas Instruments]

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TPS54719

SLVSB69 – JUNE 2012

www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

TJ = –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

VSSTR = 0.3 V

73

115

mV

SS to reference crossover

98% nominal

0.87

V

SS discharge current (overload)

VSENSE = 0 V, VSS = 0.3 V

70

μA

SS discharge voltage (overload)

VSENSE = 0 V

80

mV

SS discharge current

VIN = 5 V, V(SS) = 0.5 V

1.2

mA

(UVLO, EN, Thermal 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

VIN = 5 V, TJ = 25°C

78

Ω

Minimum VIN for valid output

V(PWRGD) < 0.5 V at 100 μA

0.8

V

4

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