TPS54418RTER datasheet(4/34 Pages) TI

Part #	TPS54418RTER

Description	2.95 V to 6 V Input, 4 A Output, 2MHz, Synchronous Step Down Switcher With Integrated FETs ( SWIFT??

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Manufacturer	TI [Texas Instruments]

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TPS54418

SLVS946A – MAY 2009 – REVISED MAY 2010

www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

TJ = –40°C to 150°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

16

Ω

BOOT-PH UVLO

VIN = 2.95 V

2.1

V

SLOW START (SS PIN)

Charge Current

V(SS) = 0.4 V

1.8

mA

SS to reference crossover

98% nominal

0.9

V

SS discharge voltage (overload)

VSENSE = 0 V

20

mA

SS discharge current (UVLO, EN, Thermal

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

1.25

mA

Fault)

POWER GOOD (PWRGD PIN)

VSENSE falling (Fault)

91

% Vref

VSENSE rising (Good)

93

% Vref

VSENSE threshold

VSENSE rising (Fault)

107

% Vref

VSENSE falling (Good)

105

% Vref

Hysteresis

VSENSE falling

2

% Vref

Output high leakage

VSENSE = VREF, V(PWRGD) = 5.5 V

2

nA

On resistance

100

Ω

Output low

I(PWRGD) = 3.5 mA

0.3

V

Minimum VIN for valid output

V(PWRGD) < 0.5 V at 100 mA

1.2

1.6

V

4

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