TPS54361-Q1 datasheet(6/50 Pages) TI1

No. de pieza	TPS54361-Q1

Descripción Electrónicos	TPS54361-Q1 4.5-V to 60-V Input, 3.5-A, Step Down DC-DC Converter with Soft-Start and Eco-mode

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Fabricante Electrónico	TI1 [Texas Instruments]

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TPS54361-Q1

SLVSCC4A – APRIL 2014 – REVISED APRIL 2014

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Electrical Characteristics (continued)

TJ = –40°C to 150°C, V(VIN) = 4.5 V to 60 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Minimum VIN for defined output

V(PWRGD) < 0.5 V, I(PWRGD) = 100 µA

0.9

2

V

7.6 Timing Requirements

MIN

TYP

MAX

UNIT

RT/CLK

Minimum CLK input pulse width

15

ns

7.7 Switching Characteristics

TJ = –40°C to 150°C, V(VIN) = 4.5 V to 60 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ENABLE AND UVLO (EN PIN)

Enable to COMP active

V(VIN) = 12 V, TA = 25°C

540

µs

CURRENT-LIMIT

Current limit threshold delay

60

ns

SW

ton

V(VIN) = 23.7 V, VO = 5 V, IO = 3.5 A,

100

ns

Minimum on time

R(RT) = 39.6 kΩ, TA = 25°C

RT/CLK

Switching frequency range using RT mode

100

2500

kHz

ƒS

Switching frequency

R(RT) = 200 kΩ

450

500

550

kHz

Switching frequency range using CLK

160

2300

kHz

mode

TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN)

RT/CLK falling edge to SW rising edge

Measured at 500 kHz with an RT

55

ns

delay

resistor (R(RT)) in series

PLL lock in time

Measured at 500 kHz

78

μs

6

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