LTC3609

2

3609f

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

Boosted Topside Driver Supply Voltage

(BOOST) ................................................ 42V to –0.3V

SW Voltage ............................................... 36V to –5V

PGOOD Voltages...................................... 7V to –0.3V

Operating Junction Temperature Range

(Notes 2, 4)........................................ –40°C to 125°C

Storage Temperature Range................... –55°C to 125°C

(Note 1)

TOP VIEW

WKG PACKAGE

52-LEAD (7mm

8mm) QFN MULTIPAD

SW 8

NC 9

SGND 10

BOOST 11

RUN/SS 12

SGND 14

40 PGND

39 PGND

38 PGND

37 PGND

36 PGND

35 PGND

34 PGND

33 SW

28 NC

27 SGND

53

55

SW

54

SGND

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC3609EWKG#PBF

LTC3609EWKG#TRPBF

LTC3609WKG

52-Lead (7mm

× 8mm) Plastic QFN

–40°C to 125°C

LTC3609IWKG#PBF

LTC3609IWKG#TRPBF

LTC3609WKG

52-Lead (7mm

× 8mm) 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.

Consult LTC Marketing for information on non-standard lead based finish parts.