LTC7821

2

Rev A

For more information www.analog.com

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

Top Side Driver Voltages

BOOST1................................................. –0.3V to 86V

BOOST2, BOOST3.................................. –0.3V to 46V

Switch Voltages

SW1............................................................ 0V to 80V

SW3....................................................... –0.3V to 40V

MID, MID_SENSE....................................... –0.3V to 40V

(BOOST1-SW1), (BOOST2-MID),

(BOOST3-SW3)............................................ –0.3V to 6V

FAULT, PGOOD ........................................... –0.3V to 80V

Operating Junction Temperature Range

(Notes 2, 3, 9).................................... –40°C to 125°C

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

(Note 1)

32

33

SGND

31 30 29 28 27 26 25

9 10 11 12

TOP VIEW

UH PACKAGE

32-LEAD (5mm × 5mm) PLASTIC QFN

EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB

13 14 15 16

17

18

19

20

21

22

23

24

8

7

6

5

4

3

2

1

MODE/PLLIN

CLKOUT

RUN

FAULT

PGOOD

TIMER

TRACK/SS

EXT_REF

BG1

BOOST2

BOOST3

TG2

SW3

BG2

PGND

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC7821EUH#PBF

LTC7821EUH#TRPBF

7821

32-Lead (5mm × 5mm) Plastic QFN

–40°C to 125°C

LTC7821IUH#PBF

LTC7821IUH#TRPBF

7821

32-Lead (5mm × 5mm) Plastic QFN

–40°C to 125°C

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

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel. Some packages are available in 500 unit reels through

designated sales channels with #TRMPBF suffix.

ORDER INFORMATION http://www.linear.com/product/LTC7821#orderinfo