LT8613 datasheet(2/30 Pages) AD

2 / 30 page

LT8645S/LT8646S

Rev. B

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PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

VIN, EN/UV................................................................65V

PG.............................................................................42V

BIAS..........................................................................25V

FB, TR/SS . .................................................................4V

SYNC/MODE Voltage . ................................................6V

(Note 1)

LT8645S

LT8646S

LQFN PACKAGE

32-LEAD (6mm × 4mm × 0.94mm)

JEDEC BOARD: θJA = 30°C/W, ΨJT = 0.6°C/W,

θJCTOP = 28.5°C/W, θJC(PAD) = 4.4°C/W (NOTE 3)

DEMO BOARD: θJA = 17°C/W

EXPOSED PADS (PINS 33-38) ARE GND, SHOULD BE SOLDERED TO PCB

TOP VIEW

11 12 13 14 15 16

31 30 29 28 27

VIN

GND

BIAS

VIN

INTVCC

VIN

GND

VIN

EN/UV

GND

LQFN PACKAGE

32-LEAD (6mm × 4mm × 0.94mm)

JEDEC BOARD: θJA = 30°C/W, ΨJT = 0.6°C/W,

θJCTOP = 28.5°C/W, θJC(PAD) = 4.4°C/W (NOTE 3)

DEMO BOARD: θJA = 17°C/W

EXPOSED PADS (PINS 33-38) ARE GND, SHOULD BE SOLDERED TO PCB

TOP VIEW

11 12 13 14 15 16

31 30 29 28 27

VIN

GND

BIAS

VIN

INTVCC

VIN

GND

VIN

EN/UV

GND

Operating Junction Temperature Range (Note 2)

LT8645SE/LT8646SE......................... –40°C to 125°C

LT8645SI/LT8646SI........................... –40°C to 125°C

Storage Temperature Range .................. –65°C to 150°C

Maximum Reflow (Package Body) Temperature ...260°C

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