8

LM5035C

SNVS631D – JANUARY 2010 – REVISED OCTOBER 2016

www.ti.com

Product Folder Links: LM5035C

Submit Documentation Feedback

Copyright © 2010–2016, Texas Instruments Incorporated

Electrical Characteristics (continued)

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

CURRENT LIMIT RESTART (RES PIN)

VRES

RES threshold

TJ = 25°C

2.5

V

TJ = –40°C to 125°C

2.4

2.6

Charge source current

VRES = 1.5 V

TJ = 25°C

22

µA

TJ = –40°C to 125°C

16

28

Discharge sink current

VRES = 1 V

TJ = 25°C

12

µA

TJ = –40°C to 125°C

8

16

SOFT-START (SS PIN)

ISS

Charging current in normal

operation

VSS = 0

TJ = 25°C

110

µA

TJ = –40°C to 125°C

80

140

Charging current during a hiccup

mode restart

VSS = 0

TJ = 25°C

1.2

µA

TJ = –40°C to 125°C

0.6

1.8

OSCILLATOR (RT PIN)

FSW1

Frequency 1 (at HO, half

oscillator frequency)

RRT = 15 kΩ

TJ = 25°C

200

kHz

TJ = –40°C to 125°C

185

215

RRT = 15 kΩ

TJ = –40°C to 125°C

180

220

FSW2

Frequency 2 (at HO, half

oscillator frequency)

RRT = 5.49 kΩ

TJ = 25°C

500

kHz

TJ = –40°C to 125°C

430

570

DC level

2

V

Input sync threshold

TJ = 25°C

3

V

TJ = –40°C to 125°C

2.5

3.4

PWM CONTROLLER (COMP PIN)

Delay to output

80

ns

VPWM-OS

SS to RAMP offset

TJ = 25°C

1

V

TJ = –40°C to 125°C

0.7

1.2

Minimum duty cycle

SS = 0 V

TJ = –40°C to 125°C

0%

Small signal impedance

ICOMP = 600 µA, COMP current to PWM voltage

6200

Ω

MAIN OUTPUT DRIVERS (HO AND LO PINS)

Output high voltage

IOUT = 50 mA, VHB - VHO,

VVCC - VLO

TJ = 25°C

0.25

V

TJ = –40°C to 125°C

0.5

Output low voltage

IOUT = 100 mA

TJ = 25°C

0.2

V

TJ = –40°C to 125°C

0.5

Rise time

CLOAD = 1 nF

15

ns

Fall time

CLOAD = 1 nF

13

ns

Peak source current

VHO,LO = 0 V, VVCC = 10 V

1.25

A

Peak sink current

VHO,LO = 10 V, VVCC = 10 V

2

A

HB threshold

VCC rising

3.8

V