LM5035

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SNVS428H – JANUARY 2006 – REVISED OCTOBER 2015

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

(1)

MIN

NOM

MAX

UNIT

VIN voltage

13

105

V

External voltage applied to VCC

8

15

V

Operating Junction Temperature

–40

125

°C

(1)

Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which

operation of the device is intended to be functional. For ensured specifications and test conditions, see the Electrical Characteristics.

6.4 Thermal Information

LM5035

THERMAL METRIC(1)

PWP (HTSSOP)

NHZ (WQFN)

UNIT

20 PINS

24 PINS

RθJA

Junction-to-ambient thermal resistance

36.2

30

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

20.6

20.1

°C/W

RθJB

Junction-to-board thermal resistance

17.4

5.5

°C/W

ψJT

Junction-to-top characterization parameter

0.5

0.2

°C/W

ψJB

Junction-to-board characterization parameter

17.2

5.5

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

1.6

1.5

°C/W

(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report, SPRA953.

6.5 Electrical Characteristics

VVIN = 48 V, VVCC = 10 V externally applied, RRT = 15.0 kΩ, RDLY = 27.4 kΩ, VUVLO = 3 V, VOVP = 0 V unless otherwise

stated

(1) (2).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

START-UP REGULATOR (VCC PIN)

TJ = 25°C

7.6

VVCC

VCC voltage

IVCC = 10 mA

V

TJ = –40°C to 125°C

7.3

7.9

TJ = 25°C

25

IVCC(LIM)

VCC current limit

VVCC = 7 V

mA

TJ = –40°C to 125°C

20

TJ = 25°C

0.1

VCC undervoltage

VIN = VCC,

ΔVVCC from

VVCCUV

V

threshold (VCC increasing)

the regulation set point

TJ = –40°C to 125°C

0.2

TJ = 25°C

6.2

VCC decreasing

VCC – PGND

V

TJ = –40°C to 125°C

5.5

6.9

TJ = 25°C

30

IVIN

Start-up regulator current

VIN = 90 V, UVLO = 0 V

µA

TJ = –40°C to 125°C

70

Outputs and COMP open,

TJ = 25°C

4

Supply current into VCC

VVCC = 10 V, outputs

mA

from external source

TJ = –40°C to 125°C

6

switching

VOLTAGE REFERENCE REGULATOR (REF PIN)

TJ = 25°C

5

VREF

REF voltage

IREF = 0 mA

V

TJ = –40°C to 125°C

4.85

5.15

TJ = 25°C

25

REF voltage regulation

IREF = 0 to 10 mA

mV

TJ = –40°C to 125°C

50

TJ = 25°C

20

REF current limit

REF = 4.5 V

mA

TJ = –40°C to 125°C

15

(1)

All limits are ensured. All electrical characteristics having room temperature limits are tested during production with TA = 25°C. All hot

and cold limits are ensured by correlating the electrical characteristics to process and temperature variations and applying statistical

process control.

(2)

Typical specifications represent the most likely parametric norm at 25°C operation.

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