FX033Z datasheet(4/32 Pages) TI

4 / 32 page

TPS51363

SLUSBB5A – FEBRUARY 2013 – REVISED JUNE 2013

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ELECTRICAL CHARACTERISTICS

over operating free-air temperature range, VIN = 12 V, VV5 = 5 V, MODE = GND, VEN = 3.3 V (unless otherwise noted)

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

SUPPLY CURRENT

IV5

V5 supply current

TA=25°C, No load, VEN = 5 V

560

μA

IV5SDN

V5 shutdown current

TA=25°C, No load, VEN = 0 V

μA

VREF OUTPUT

IVREF = 30 µA, w.r.t. GSNS

VVREF

Reference voltage

0 µA

≤ IVREF ≤ 300 µA, -10°C ≤ TA ≤ 85°C

-1.0%

1.0%

IVREF(OCL)

Current limit

(VVREF–VGSNS) = 1.7 V

0.4

VOLTAGE AMPLIFIER

IVSNS

VSNS input current

VVSNS = 1 V

-1

μA

IVSNS(DIS)

VSNS discharge current

VEN = 0 V, VVSNS = 0.5 V

SWITCH TIMING

tOFF(min)

Minimum off-time

320

tDEAD1

Deadtime1(1)

SW rising to falling

tDEAD2

Deadtime2(1)

SW falling to rising

INTERNAL BOOT STRAP SW

VFBST

Forward foltage

VV5 - BST, TA = 25°C, IF = 10 mA

0.1

0.2

IBST

BST leakage current

TA = 25°C, VBST = 14 V, VSW = 7 V

0.01

1.5

μA

MOSFET ON-RESISTANCE

RDS(on)H

High-side on-resistance

TA = 25°C, VV5 = 5 V

RDS(on)L

Low-side on-resistance

TA = 25°C, VV5 = 5 V

LOGIC THRESHOLD

VMODE(TH)

MODE threshold voltage

MODE = Float

2.5

VLL

EN low-level voltage

0.35

VLH

EN high-level voltage

0.9

VL(HYST)

EN hysteresis voltage

0.25

VL(LK)

EN input leakage current

-1

μA

SOFT-START

ISS

Soft-Start current

Soft-start current source

μA

PGOOD COMPARATOR

VPGTH

PGOOD threshold

PGOOD in from lower (startup)

92%

IPG

PGOOD sink current

VPGOOD = 0.5V

tPG(CMPSS)

PGOOD start-up delay

PGOOD comparator startup delay

1.5

IPG(LK)

PGOOD leakage current

-1

μA

(1)

Ensured by design.

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