LM5145 datasheet(10/60 Pages) TI1

Part #	LM5145

Description	LV5144 95-V, Synchronous, Buck DC/DC Controller With Wide Duty Cycle Range

PDF	60 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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10 / 60 page

7.5 Electrical Characteristics (continued)

Typical values correspond to TJ = 25°C. Minimum and maximum limits apply over the –40°C to 150°C junction temperature

range unless otherwise stated. VVIN = 48 V, VEN/UVLO = 1.5 V, RRT = 25 kΩ unless otherwise stated

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VDEM-TH

Diode emulation zero-cross threshold

Measured at SW with VSW rising

THERMAL SHUTDOWN

TSD

Thermal shutdown threshold

TJ rising

175

°C

TSD-HYS

Thermal shutdown hysteresis

°C

Switching Characteristics

THO-TR, TLO-

HO, LO rise times

VBST-VSW =7 V, CLOAD =1 nF, 20% to

80%

THO-TF, TLO-

HO, fall times

VBST -VSW =7 V, CLOAD =1 nF, 20% to

80%

THO-DT

HO turnon dead time

VBST - VSW =7 V, LO off to HO on, 50%

to 50%

LV5144

SNVSCJ1 – AUGUST 2023

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LM5145 Datasheet(PDF) 10 Page - Texas Instruments