Operating Junction Temperature Range (Note 2)

LT8640AJ .......................................... –40°C to 150°C

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

LT8640A

2

Rev. 0

For more information www.analog.com

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

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

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

(Note 1)

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART

MARKING*

PACKAGE DESCRIPTION

TEMPERATURE

RANGE

LT8640AJUDCM#PBF

LT8640AJUDCM#TRPBF

LHNK

18-Lead (3mm × 4mm) Plastic Side Solderable QFN –40°C to 150°C

LT8640AJUDCM-3.3#PBF

LT8640AJUDCM-3.3#TRPBF

LHQQ

18-Lead (3mm × 4mm) Plastic Side Solderable QFN –40°C to 150°C

AUTOMOTIVE PRODUCTS**

LT8640AJUDCM#WPBF

LT8640AJUDCM#WTRPBF

LHNK

18-Lead (3mm × 4mm) Plastic Side Solderable QFN –40°C to 150°C

LT8640AJUDCM-3.3#WPBF LT8640AJUDCM-3.3#WTRPBF

LHQQ

18-Lead (3mm × 4mm) Plastic Side Solderable QFN –40°C to 150°C

Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.

**Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These

models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your

local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for

these models.

LT8640A

20 19 18 17

7

8

9

10

TOP VIEW

UDCM PACKAGE

18-LEAD (3mm × 4mm) PLASTIC QFN

EXPOSED PAD (PIN 21) IS SW, SHOULD BE SOLDERED TO PCB

NOTE: PINS 5 AND 12 ARE REMOVED. CONFIGURATION DOES NOT MATCH

JEDEC 20-LEAD PACKAGE OUTLINE

1

BIAS

BST

GND1

TR/SS

RT

EN/UV

GND2

16

15

14

13

11

2

3

4

6

21

SW

LT8640A-3.3

20 19 18 17

7

8

9

10

TOP VIEW

UDCM PACKAGE

18-LEAD (3mm × 4mm) PLASTIC QFN

EXPOSED PAD (PIN 21) IS SW, SHOULD BE SOLDERED TO PCB

NOTE: PINS 5 AND 12 ARE REMOVED. CONFIGURATION DOES NOT MATCH

JEDEC 20-LEAD PACKAGE OUTLINE

1

BIAS

BST

GND1

TR/SS

RT

EN/UV

GND2

16

15

14

13

11

2

3

4

6

21

SW