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LM5035C

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SNVS631D – JANUARY 2010 – REVISED OCTOBER 2016

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Copyright © 2010–2016, Texas Instruments Incorporated

(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

7.5 Electrical Characteristics

Specifications with standard typeface are for TJ = 25°C, unless indicating that type applies over full operating junction

temperature range. VVIN = 48 V, VVCC = 10 V externally applied, RRT = 15 kΩ, RDLY = 27.4 kΩ, VUVLO = 3 V, VOVP = 0 V unless

otherwise stated. See

(1) and (2).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

START-UP REGULATOR (VCC PIN)

VVCC

VCC voltage

IVCC = 10 mA

TJ = 25°C

7.6

V

TJ = –40°C to 125°C

7.3

7.9

IVCC(LIM)

VCC current limit

VVCC = 7 V, TJ = –40°C to 125°C

58

mA

VVCCUV

VCC undervoltage threshold

(VCC increasing)

VIN = VCC, ΔVVCC from

the regulation setpoint

TJ = 25°C

0.1

V

TJ = –40°C to 125°C

0.2

VCC decreasing

VCC – PGND

TJ = 25°C

6.2

V

TJ = –40°C to 125°C

5.5

6.9

IVIN

Start-up regulator current

VIN = 90 V, UVLO = 0 V

TJ = 25°C

30

µA

TJ = –40°C to 125°C

70

Supply current into VCC from

external source

Outputs and COMP open,

VVCC = 10 V, Outputs

Switching

TJ = 25°C

4

mA

TJ = –40°C to 125°C

6

VOLTAGE REFERENCE REGULATOR (REF PIN)

VREF

REF voltage

IREF = 0 mA

TJ = 25°C

5

V

TJ = –40°C to 125°C

4.85

5.15

REF voltage regulation

IREF = 0 to 10 mA

TJ = 25°C

25

mV

TJ = –40°C to 125°C

50

REF current limit

REF = 4.5 V

TJ = 25°C

20

mA

TJ = –40°C to 125°C

15

UNDERVOLTAGE LOCKOUT AND SHUTDOWN (UVLO PIN)

VUVLO

Undervoltage threshold

TJ = 25°C

1.25

V

TJ = –40°C to 125°C

1.212

1.288

IUVLO

Hysteresis current

UVLO pin sinking

TJ = 25°C

23

µA

TJ = –40°C to 125°C

19

27

Undervoltage shutdown

threshold

UVLO voltage falling

0.3

V

Undervoltage standby enable

threshold

UVLO voltage rising

0.4

V

OVERVOLTAGE PROTECTION (OVP PIN)

VOVP

Overvoltage threshold

TJ = 25°C

1.25

V

TJ = –40°C to 125°C

1.212

1.288

IOVP

Hysteresis current

OVP pin sourcing

TJ = 25°C

23

µA

TJ = –40°C to 125°C

19

27

CURRENT SENSE INPUT (CS PIN)

VCS

Current limit threshold

TJ = 25°C

0.25

V

TJ = –40°C to 125°C

0.288

0.272

CS delay to output

CS from zero to 1 V. Time for HO and LO to fall

to 90% of VCC. Output load = 0 pF.

80

ns

Leading edge blanking time at

CS

50

ns

CS sink impedance (clocked)

Internal FET sink

impedance

TJ = 25°C

32

Ω

TJ = –40°C to 125°C

60