TPS54526PWPR.B datasheet(5/36 Pages) TI2

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6.4 Thermal Information

THERMAL METRIC(1)

TPS54526

UNITS

PWP (14) PINS

RSA (16) PINS

RθJA

Junction-to-ambient thermal resistance

43.7

35.2

°C/W

RθJCtop

Junction-to-case (top) thermal resistance

33.1

40.6

RθJB

Junction-to-board thermal resistance

28.4

12.3

ψJT

Junction-to-top characterization parameter

1.3

0.8

ψJB

Junction-to-board characterization parameter

28.2

12.4

RθJCbot

Junction-to-case (bottom) thermal resistance

4.7

3.6

6.5 Electrical Characteristics

over operating free-air temperature range, VIN = 12V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SUPPLY CURRENT

IVIN

Operating - non-switching supply current

VIN current, TA = 25°C, EN = 5 V,

VVFB = 0.8 V

900

1400

μA

IVINSDN

Shutdown supply current

VIN current, TA = 25°C, EN = 0 V

3.6

μA

LOGIC THRESHOLD

VENH

EN high-level input voltage

1.6

VENL

EN low-level input voltage

0.6

REN

EN pin resistance to GND

VEN = 12 V

220

440

880

kΩ

VFB VOLTAGE AND DISCHARGE RESISTANCE

VFBTH

VFB threshold voltage

VFB voltage light load mode, TA = 25°C,

VO = 1.05 V, IO = 10mA

771

TA = 25°C, VO = 1.05 V, continuous mode

757

765

773

TA = 0°C to 85°C, VO = 1.05 V, continuous

mode(1)

753

777

TA = –40°C to 85°C, VO = 1.05 V, continuous

mode(1)

751

779

IVFB

VFB input current

VVFB = 0.8 V, TA = 25°C

±0.15

μA

RDischg

VO discharge resistance

VEN = 0 V, VO = 0.5 V, TA = 25°C

100

Ω

VREG5 OUTPUT

VVREG5

VREG5 output voltage

TA = 25°C, 6 V < VIN < 18 V,

0 < IVREG5 < 5 mA

5.2

5.5

5.7

VVREG5

VREG5 Line regulation

6.0 V < VIN < 18 V, IVREG5 = 5 mA

VVREG5

VREG5 Load regulation

0 mA < IVREG5 < 5 mA

100

IVREG5

VREG5 Output current

VIN = 6 V, VVREG5 = 4 V, TA = 25°C

MOSFET

Rdsonh

High side switch resistance

TA = 25°C, VBST - VSW1,2 = 5.5 V

mΩ

Rdsonl

Low side switch resistance

TA = 25°C

mΩ

www.ti.com

TPS54526

SLVSB84D – MAY 2012 – REVISED APRIL 2021

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